Electrical Relays and Accessories

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The TRU Series is a multifunction, knob adjustable, Universal Time Delay Relay. It includes six of the most popular timing functions selected by a slide switch. The time delay is knob adjustable and the time delay range is switch selectable. The repeat accuracy is + 0.1%. Both function and time range can be selected on the top face of the unit. In addition to multifunctioning and multiple time ranges, the TRU Series features universal input voltage; 19 to 264VAC and 19 to 30VDC and full 10A output relay. The TRU Series can directly replace up to 1000 competitive time delay relay models. Operation: A six position slide switch selects delay-on-make, interval, single shot, recycling (ON time first, equal recycle delays), delay-on-break, and retriggerable single shot. 8-pin DPDT base wiring is limited to delay-on-make, interval, and recyclingfunctions. All six functions are available in the 8-pin SPDT and 11-pin DPDT versions.

Littelfuse

TRU2 SSAC Universal Time Delay Relay

MFR: Littelfuse

MFR #: TRU2

UPC: 079458012156

Item #: 98301

Available to Order

$537.70 each

Availability

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The ISS-105 is a smart five-channel intrinsically safe relay and pump controller. The ISS-105 can be configured for a wide variety of applications including alternating or non-alternating duplex, duplex separate pump stop (SPS), triplex and quadplex applications. It can be set up for pump-up or pump-down applications or can be used as a five-channel relay. The ISS-105 has a long list of features that are needed for multiple pump applications. The ISS-105 can indicate low, high and out-of-sequence alarms. If an out-of-sequence alarm occurs, the skipped pump(s) will be started as intended. The Model ISS-105 can be set up to do non-alternating control, alternating control and alternating control with one non-alternating pump. The non-alternating pump is intended for use with an emergency or jockey pump. The ISS-105 can start an emergency pump once every 50 cycles to keep it working freely. Using the built-in DIP switches, individual pumps can be disabled when taken out of service for repair or maintenance.

Littelfuse

ISS-105 Symcom 5-Ch Intrinsically-Safe Switch

MFR: Littelfuse

MFR #: ISS-105

UPC: 079458994315

Item #: 1569571

Available to Order

$2651.05 each

Availability

Location	Available Qty

The SE-330 is an advanced ground-fault and neutral-groundingresistor monitoring relay that is compliant with Rule10-302 of the 2018 Canadian Electrical Code Part I (CE Code). It measures neutral current, neutral-to-ground voltage, and neutral-to-ground resistance. It provides continuous monitoring of the neutral-to-ground path to verify that the neutral-grounding resistor (NGR) is intact and that it has not been bypassed or shorted. An open NGR renders currentsensing ground-fault protection inoperative and could result in a false belief that the system is functioning properly. A shorted NGR results in higher-than-expected ground-fault current. The SE-330 can be used with low- and medium-voltage transformers and generators with low- or high-resistance grounding used in processing, manufacturing, chemical, pulp and paper, petroleum, and water-treatment facilities. For high-voltage applications, use the SE-330HV. For applications that require conformance to Australian standards, use the SE-330AU.

Littelfuse

SE-330-03-00 SE 330 Series Neutral-Grounding-Resistor Monitor Ether

MFR: Littelfuse

MFR #: SE-330-03-00

UPC: 079458988413

Item #: 1445479

Available to Order

$23538.35 each

Availability

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The PC-102 series is a dual-channel switch that provides dual protection against seal failures and over-temperature in submersible pumping applications. The relays have two form-C isolated output relays and two LEDs, which illuminate when each associated output relay is energized. The sensitivity adjustment (4.7k-100kOhms) allows you to define the input impedance at which the output relays will change state. The sensitivity for the over-temperature detector can be set to 4k Ohms with use of the DIP switches.

Littelfuse

PC-102CICI-LT Symcom 2-Channel Leak/Temp Detector/1

MFR: Littelfuse

MFR #: PC-102CICI-LT

UPC: 079458997699

Item #: 595113

Available to Order

$758.33 each

Availability

Location	Available Qty

No Image Available

Littelfuse

355-400 Symcom 3Ph Vltmon/380-480V/Vub,Td,Rd/480V Rel.

MFR: Littelfuse

MFR #: 355-400

UPC: 079458989816

Item #: 177013

Available to Order

$1291.80 each

Availability

Location	Available Qty

Operates on AC ungrounded systems. The EL3100 is a self-powered ground-fault and phase voltage indication system for 3-phase systems. The EL3100 meets the National Electrical Code (NEC, Article 250.21(B)) and the Canadian Electrical Code (CEC) requirements for ground detectors for ungrounded alternating-current systems. Voltage connections are provided on the EL3100 for 208, 240, 480, and 600-V systems. Three green LEDs on the EL3100 indicate the presence of phase-to-ground voltage and one red LED indicates a ground fault. The EL3100 can operate stand-alone or with up to five remote LED indicators. A solid-state relay output provides indication of a ground fault. The output relay is closed when the 3-phase neutral voltage shifts as the result of ground leakage.

Littelfuse

EL3100-00 Ground-Fault and Phase-Voltage Indicator Ground-Fault Indication Unit

MFR: Littelfuse

MFR #: EL3100-00

UPC: 079458825527

Item #: 738995

Available to Order

$3648.63 each

Availability

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The 460 is a 3-phase voltage monitor that protects 190-480VAC or 475-600V, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically senses line voltage. This unique microcontroller-based voltage and phase-sensing device constantly monitors the 3-phase voltages to detect harmful power line conditions such as low, high, and unbalanced voltage, loss of any phase, and phase reversal. When a harmful condition is detected, the 460 output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for a specified amount of time (restart delay). The trip and restart delays prevent nuisance tripping due to rapidly fluctuating power line conditions. All 460 models feature adjustable 1-30 second trip delay, 1-500 second restart delay, 2-8% voltage unbalance trip point, and one form C contact except where noted.

Littelfuse

460-15 Symcom 3-Phase Vm/ 190-480V/ Adj Vub

MFR: Littelfuse

MFR #: 460-15

UPC: 079458990522

Item #: 465110

Available to Order

$653.13 each

Availability

Location	Available Qty

No Image Available

Littelfuse

RK-310R-01 Relay Series Rk-310R-01 Led Remote Kit Red C/W Lbl#1

MFR: Littelfuse

MFR #: RK-310R-01

UPC: 079458825510

Item #: 1499413

Available to Order

$396.88 each

Availability

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The SE-CS30 series is a sensitive nickel-core current transformer used with Littelfuse relays to detect low levels of earth-leakage current.

Littelfuse

SE-CS30-8 SE CS30 Series Xfmr Current 600:1 200Mm Id W/Flux Con

MFR: Littelfuse

MFR #: SE-CS30-8

UPC: 079458989267

Item #: 1475951

Available to Order

$7475.35 each

Availability

Location	Available Qty

The 777 is a fully programmable electronic overload relay designed to protect any motor drawing 2-800 full load amps (external CTs are required above 90 amps). The 777 (family of products) is for 3-phase 200-480VAC applications, with several specialized units for other voltage ranges and unique applications. Common applications include conveyor systems, HVAC equipment, saws and grinders, fan motors, and almost any pumping application. Some unique applications include use with a Subtrol equipped Franklin submersible motor to detect high motor temperatures and applications where a fast linear trip is required. All of the overload relays provide unsurpassed protection by combining overload, voltage, phase loss and reversal, voltage and current unbalance, power monitoring, and underload based on current in one package. For standalone applications, the units incorporate a 3-digit LED display that is used for programming, providing real-time operational information and displaying diagnostic codes to aid in troubleshooting a fault condition. The units also feature a communications port that can be used with communication modules listed in the 777 accessories section to form a Modbus, DeviceNet Profibus, or Ethernet network. Up to 99 units can be remotely monitored and controlled from a PC, PLC, or SCADA system, and data logging through a PC with the optional Solutions software. This capability allows for a simple, cost-effective way to meet new requirements for arc-flash safety.

Littelfuse

777-P2 Symcom 3-Phase Olr/200-480V/2-800Fla+

MFR: Littelfuse

MFR #: 777-P2

UPC: 079458991116

Item #: 1403467

Available to Order

$2952.45 each

Availability

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The FA and FS Series Flashers have proven their reliability through years of use on communication towers, smoke stacks, cooling towers, tall buildings, bridges and utility towers. The highest quality components are encapsulated in a rugged plastic housing with a molded-in heat transfer plate. The flash rate, ratio, and failsafe design meet FAA regulations. Zero voltage switching can increase lamp life up to ten times. The FS155-30RF & FS165-30RF include superior RF filtering circuitry for use in high RF installations, including AM hot towers. Operation: FS Series - Flasher (OFF First), FA Series - Flashers & Aux. Modules: Upon application of input voltage, the T2 OFF time begins. At the end of the OFF time, the T1 ON time begins and the load energizes. At the end of T1, T2 begins and the load de-energizes. This cycle repeats until voltage is removed. Reset: Removing input voltage resets the output and the sequence to T2.

Littelfuse

FS127 SSAC Ac Low Cost Flasher

MFR: Littelfuse

MFR #: FS127

UPC: 079458993394

Item #: 1482444

Available to Order

$120.15 each

Availability

Location	Available Qty

No Image Available

Littelfuse

ELCT30-31 Relay Series Ct 600:1 With Flux Cond 31Mm

MFR: Littelfuse

MFR #: ELCT30-31

UPC: 079458232684

Item #: 1204731

Available to Order

$1670.58 each

Availability

Location	Available Qty

No Image Available

Littelfuse

P0200-20 Relay Series Compound Heat Sink 2Oz Jar

MFR: Littelfuse

MFR #: P0200-20

UPC: 079458997477

Item #: 748630

Available to Order

$129.45 each

Availability

Location	Available Qty

No Image Available

Littelfuse

AF0500-00 AF0500 Series Arc-Flash Relay

MFR: Littelfuse

MFR #: AF0500-00

UPC: 079458845310

Item #: 1069006

Available to Order

$15225.68 each

Availability

Location	Available Qty

No Image Available

Littelfuse

50R200 Symcom 1-Phase Voltage Monitor/ 190-2

MFR: Littelfuse

MFR #: 50R200

UPC: 079458990706

Item #: 1407332

Available to Order

$803.93 each

Availability

Location	Available Qty

No Image Available

Littelfuse

LLC54AA LLC5 Series Liquid Level Control

MFR: Littelfuse

MFR #: LLC54AA

UPC: 079458996357

Item #: 1553524

Available to Order

$220.18 each

Availability

Location	Available Qty

No Image Available

Littelfuse

LLC52BA LLC5 Series Liquid Level Control

MFR: Littelfuse

MFR #: LLC52BA

UPC: 079458996340

Item #: 1475434

Available to Order

$397.00 each

Availability

Location	Available Qty

No Image Available

Littelfuse

SE-134C-XGC-00 SE 134C Series Gf-Gc Mon, Ac/Dc Supply, Ext-Gc

MFR: Littelfuse

MFR #: SE-134C-XGC-00

UPC: 079458809107

Item #: 228293

Available to Order

$17809.65 each

Availability

Location	Available Qty

3PH VM/380-480V/adj.RD/DPDT 480V Relay. The 350 is a heavy-duty voltage monitor. This product should be used when high current relays or dual contacts are required, or 480V controls are used. Since the 350 uses heavy-duty relays, it comes in fixed voltage range models rather than a dual autoranging version like the Model 250. The 350-200 has a 15A general purpose contact. The 350-400 provides a SPDT (Form C) relay rated to switch up to 600V, allowing the use of 480V controls, eliminating the need for a control power transformer to step the voltage down to 120-240V. Several DPDT (two Form C contacts) relay models are also available. The 350 microcontroller-based family of products are low cost yet highly advanced solutions to heavy-duty problems. The 350 includes advanced single LED diagnostics. Five different light patterns distinguish faults and normal operating conditions. Other options such as high voltage trip and adjustable restart delay are available.

Littelfuse

350-400-2-5 Symcom 3Ph Vm/380-480V/Adj.Rd/Dpdt 480V Relay

MFR: Littelfuse

MFR #: 350-400-2-5

UPC: 079458989953

Item #: 1521030

Available to Order

$1248.28 each

Availability

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The 201A is a 3-phase, auto-ranging, dual-range voltage monitor that protects 190-480VAC, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically selects between the 200V and 400V range. The 201A includes advanced single LED diagnostics, where color and different light patterns distinguish between faults and normal conditions.This unique microcontroller-based voltage and phase-sensing device constantly monitors the 3-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the 201As output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels.

Littelfuse

201A-9 Symcom 3-Phase Plug-In Voltage Monito

MFR: Littelfuse

MFR #: 201A-9

UPC: 079458990225

Item #: 433950

Available to Order

$517.85 each

Availability

Location	Available Qty

The 460-15-100-SLD is a seal-leak detector to sense seal failures on submersible pumps. A microcontroller-based relay monitors the shaft seal of a submersible pump motor. A resistive probe is installed in the seal cavity. If water leaks into the pump, the resistance measured by the probe decreases. When the resistance drops below the sensitivity setpoint, the unit will trip and the relay contacts will change state. Output relay logic can be reversed by removing an external jumper. The unit will automatically reset when a fault is cleared.

Littelfuse

460-15-100-SLD Symcom Seal Leak Detector/ 110-120V/

MFR: Littelfuse

MFR #: 460-15-100-SLD

UPC: 079458990546

Item #: 819808

Available to Order

$478.40 each

Availability

Location	Available Qty

The HRPS/HRIS Series combines an electromechanical relay output with microcontroller timing circuitry. It is a factory programmed module available in any 1 of 13 standard functions. It offers 12 to 240V operation in two universal ranges and factory fixed, onboard, or external adjustable time delays with a repeat accuracy of 0.5%. The output contact rating allows for direct operation of heavy loads, such as compressors, pumps, blower motors, heaters, etc. This series is ideal for OEM applications where cost is a factor. The HRPS has non-isolated SPDT relay contacts, and the HRIS has isolated SPDT relay contacts. Both offer the most popular timer functions in the industry. Operation (Interval): Upon application of input voltage, the time delay begins. The output (relay or solid state) energizes during the time delay. At the end of time delay the output de-energizes and remains de-energized until input voltage is removed. Reset: Removing input voltage resets the time delay and output.

Littelfuse

HRPSD12HI SSAC Programmable Timer

MFR: Littelfuse

MFR #: HRPSD12HI

UPC: 079458994063

Item #: 333183

In Stock - Check Availability

$413.70 each

Availability

Location	Available Qty

The FS300 Series of solid-state flashers were specifically designed to operate lamp loads. Their two-terminal series connection feature makes installation easy. The high immunity to line noise and transients makes the FS300 Series ideal for moving vehicle applications. All solid-state construction means reliability and long life. The FS300 Series offers a factory fixed flash rate of 75 FPM or may be ordered with a fixed, custom flash rate ranging from 60 to 150 FPM. Operation: Upon application of input voltage, the T2 OFF time begins. At the end of the OFF time, the T1 ON time begins and the load energizes. At the end of T1, T2 begins and the load de-energizes. This cycle repeats until input voltage is removed. Reset: Removing input voltage resets the output and the sequence to T2.

Littelfuse

FS324 SSAC Dc Flasher

MFR: Littelfuse

MFR #: FS324

UPC: 079458993554

Item #: 32685

In Stock - Check Availability

$300.40 each

Availability

Location	Available Qty

The SE-100T is a ground-fault-relay test unit designed to test the current pickup level of ground-fault protection. The tester injects current through the window of installed ground-fault current transformers to verify the operation of ground-fault monitors and relays. It is used on substations, motor control centers (MCCs), central distribution panels, switchboards, and test benches to verify relay operation. The SE-100T tests the entire ground-fault circuit including current transformers, wiring, ground-fault relay and the operation of the interrupting device. It is recommended to test every relay and its current interrupting device annually.

Littelfuse

SE-100T SE 100T Series Ground-Fault-Relay Tester

MFR: Littelfuse

MFR #: SE-100T

UPC: 079458987867

Item #: 1566844

Available to Order

$3251.88 each

Availability

Location	Available Qty

The ECS Series of single-phase AC current sensors is a universal, overcurrent or undercurrent sensing control. Its built-in toroidal sensor eliminates the inconvenience of installing a stand-alone current transformer. Includes onboard adjustments for current sensing mode, trip point, and trip delay. Detects over or undercurrent events like locked rotor, loss of load, an open heater or lamp load, or proves an operation is taking place or has ended. Operation: Input voltage must be supplied at all times for proper operation. When a fault is sensed throughout the trip delay, the output relay is energized. When the current returns to the normal run condition or zero, the output and the delay are reset. If a fault is sensed and then corrected before the trip delay is completed, the relay will not energize and the trip delay is reset to zero.

Littelfuse

ECS41BD SSAC Current Sensor

MFR: Littelfuse

MFR #: ECS41BD

UPC: 079458992458

Item #: 1503590

Available to Order

$610.63 each

Availability

Location	Available Qty

The LCSC10T12 is a toroidal current sensor for use with the DCSA Series current transducer.

Littelfuse

LCSC10T12 SSAC Calibrated Current Sensor

MFR: Littelfuse

MFR #: LCSC10T12

UPC: 079458995961

Item #: 1534387

Available to Order

$302.78 each

Availability

Location	Available Qty

The LSR-XXX load sensors use current levels to determine feed rates, tool wear, loss of prime on pumps, mixer viscosity and all types of overload and underload conditions. They may also be used to stage pump motors, chillers and other machinery. These devices combine a current transformer (CT) with Form C (SPDT) relay contacts to switch alarm circuits, contactors or any resistive or inductive load. One simple screwdriver adjustment will calibrate the sensor for all single-phase or 3-phase applications up to 100hp.

Littelfuse

LSR-115 Symcom Load Sensor/ 115V/ 2-100A/ 20-

MFR: Littelfuse

MFR #: LSR-115

UPC: 079458996661

Item #: 543443

Available to Order

$587.28 each

Availability

Location	Available Qty

For splitter applications. Both terminations must be present.

Littelfuse

SE-TA12B Relay Series Gf/Gc Term Assy

MFR: Littelfuse

MFR #: SE-TA12B

UPC: 079458989519

Item #: 1526753

Available to Order

$3783.50 each

Availability

Location	Available Qty

The ECS Series of single-phase AC current sensors is a universal, overcurrent or undercurrent sensing control. Its built-in toroidal sensor eliminates the inconvenience of installing a stand-alone current transformer. Includes onboard adjustments for current sensing mode, trip point, and trip delay. Detects over or undercurrent events like locked rotor, loss of load, an open heater or lamp load, or proves an operation is taking place or has ended. Operation: Input voltage must be supplied at all times for proper operation. When a fault is sensed throughout the trip delay, the output relay is energized. When the current returns to the normal run condition or zero, the output and the delay are reset. If a fault is sensed and then corrected before the trip delay is completed, the relay will not energize and the trip delay is reset to zero.

Littelfuse

ECS41BC SSAC Current Sensor

MFR: Littelfuse

MFR #: ECS41BC

UPC: 079458992441

Item #: 1503591

Available to Order

$610.63 each

Availability

Location	Available Qty

The KRDB Series is a compact time delay relay measuring only 2 in. (50.8 mm) square. Its microcontroller timing circuit provides excellent repeat accuracy and stability. Encapsulation protects against shock, vibration, and humidity. The KRDB Series is a cost effective approach for OEM applications that require small size, isolation, reliability, and long life. Operation (Delay-on-Break): Input voltage must be applied before and during timing. Upon closure of the initiate switch, the output relay energizes. The time delay begins when the initiate switch is opened. The output remains energized during timing. At the end of the time delay, the output de-energizes. The output will energize if the initiate switch is closed when input voltage is applied. Reset: Reclosing the initiate switch during timing resets the time delay. Loss of input voltage resets the time delay and output.

Littelfuse

KRDB424 SSAC 2X2 D.O.B. W/Relay

MFR: Littelfuse

MFR #: KRDB424

UPC: 079458994629

Item #: 1202509

Available to Order

$318.38 each

Availability

Location	Available Qty

The KRDB Series is a compact time delay relay measuring only 2 in. (50.8 mm) square. Its microcontroller timing circuit provides excellent repeat accuracy and stability. Encapsulation protects against shock, vibration, and humidity. The KRDB Series is a cost effective approach for OEM applications that require small size, isolation, reliability, and long life. Operation (Delay-on-Break): Input voltage must be applied before and during timing. Upon closure of the initiate switch, the output relay energizes. The time delay begins when the initiate switch is opened. The output remains energized during timing. At the end of the time delay, the output de-energizes. The output will energize if the initiate switch is closed when input voltage is applied. Reset: Reclosing the initiate switch during timing resets the time delay. Loss of input voltage resets the time delay and output.

Littelfuse

KRDB115M SSAC 2X2 D.O.B. W/Relay

MFR: Littelfuse

MFR #: KRDB115M

UPC: 079458994513

Item #: 1305639

Available to Order

$318.38 each

Availability

Location	Available Qty

The 233P is a single-phase pump monitor designed to protect single-phase pumps from dry-well, dead-head, jammed impeller, rapid cycle, overvoltage and undervoltage conditions. The 233P protects 230 volt, 2 or 3 wire, 1/3 to 3hp pumps. A calibration adjustment allows the 233P to be calibrated to your specific pumping applications, thereby reducing the possibility of false or nuisance tripping. A proprietary microcontroller based voltage, power factor and current-sensing circuit constantly monitors for power fluctuations, overcurrent and underload conditions. When an abnormality, such as loss of suction, is detected, the 233P deactivates its output relay and directly disconnects the pump motor. The relay then begins its user-selectable Restart Delay (dry-well recovery) timer. When the timer expires or power is removed and reapplied, the relay reactivates its output relay and allows the pump to turn back on. An infrared LED communicates directly with a hand-held diagnostic tool called the Informer (sold separately).

Littelfuse

233P-1.5-ENCL Symcom 1-Phase Pumpsaverplus / 230V

MFR: Littelfuse

MFR #: 233P-1.5-ENCL

UPC: 079458990348

Item #: 1029249

Available to Order

$1108.50 each

Availability

Location	Available Qty

The TSD2 Series is designed for more demanding commercial and industrial applications where small size and accurate performance are required. The factory calibration for fixed time delays is within 1% of the target time delay. The repeat accuracy, under stable conditions, is 0.1% of the time delay. The TSD Series is rated to operate over an extended temperature range. Time delays of 0.1 seconds to 100 hours are available. The output is rated 1A steady and 10A inrush. The modules are totally solid state and encapsulated to protect the electronic circuitry. Operation (Interval): Upon application of input voltage, the time delay begins. The output is energized during the time delay. At the end of the time delay, the output de-energizes and remains de-energized until input voltage is removed. Reset: Removing input voltage resets the time delay and output.

Littelfuse

TDS120AL SSAC Digi-Set (Single Shot)

MFR: Littelfuse

MFR #: TDS120AL

UPC: 079458999891

Item #: 1340233

Available to Order

$425.68 each

Availability

Location	Available Qty

The 460 is a 3-phase voltage monitor that protects 190-480VAC or 475-600V, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically senses line voltage. This unique microcontroller-based voltage and phase-sensing device constantly monitors the 3-phase voltages to detect harmful power line conditions such as low, high, and unbalanced voltage, loss of any phase, and phase reversal. When a harmful condition is detected, the 460 output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for a specified amount of time (restart delay). The trip and restart delays prevent nuisance tripping due to rapidly fluctuating power line conditions. All 460 models feature adjustable 1-30 second trip delay, 1-500 second restart delay, 2-8% voltage unbalance trip point, and one form C contact except where noted.

Littelfuse

460-VBM Symcom 3-Phase Volt Mon/ 190-480V/ Ad

MFR: Littelfuse

MFR #: 460-VBM

UPC: 079458990645

Item #: 1012979

Available to Order

$503.23 each

Availability

Location	Available Qty

The TDB Series combines accurate digital circuitry with isolated, 10A, DPDT or SPDT contacts in an 8 or 11-pin plug-in package. The TDB Series features DIP switch selectable time delays ranging from 0.1-10,230 seconds in three ranges. The TDB Series is the product of choice for custom control panel and OEM designers. Operation (Delay-on-Break): Input voltage must be applied to the input before and during timing. Upon closure of the initiate switch, the output relay is energized. The time delay begins when the initiate switch is opened (trailing edge triggered). The output remains energized during timing. At the end of the time delay, the output de-energizes. The output will energize if the initiate switch is closed when input voltage is applied. Reset: Reclosing the initiate switch during timing resets the time delay. Loss of input voltage resets the time delay and output.

Littelfuse

TDB120ALD SSAC Digi-Set (D.O.B.)

MFR: Littelfuse

MFR #: TDB120ALD

UPC: 079458999471

Item #: 858653

Available to Order

$598.68 each

Availability

Location	Available Qty

The SE-CS30 series is a sensitive nickel-core current transformer used with Littelfuse relays to detect low levels of earth-leakage current.

Littelfuse

SE-CS30-26 SE CS30 Series Xfmr Current 600:1 26Mm Id

MFR: Littelfuse

MFR #: SE-CS30-26

UPC: 079458989205

Item #: 1390088

Available to Order

$2101.03 each

Availability

Location	Available Qty

The LSR-0 is a self-powered load sensor intended for use as a proof relay. It is used to verify that current is flowing as intended. It has a guaranteed 15A pull-in current and 2.5A drop-out current. Proof relays are typically used to interlock fans, compressors, motors, heating elements and other devices. The LSR-0 is self-powered, that is, it draws its power from the wire being monitored so it does not require separate control power wiring.

Littelfuse

LSR-0 Symcom Load Sensor/ Self-Powered/ 15-

MFR: Littelfuse

MFR #: LSR-0

UPC: 079458996654

Item #: 891266

Available to Order

$381.98 each

Availability

Location	Available Qty

The 777/ 77C is a fully programmable electronic overload relay designed to protect any motor drawing 2-800 full load amps (external CTs are required above 90 amps). The 777-HVR-SP and 77C (family of products) are for single-phase 100-240VAC applications. Common applications include conveyor systems, HVAC equipment, saws and grinders, fan motors, and almost any pumping application. All of the overload relays provide unsurpassed protection by combining overload, underload, and voltage in one package. For standalone applications, the units incorporate a 3-digit LED display that is used for programming, providing real-time operational information and displaying diagnostic codes to aid in troubleshooting a fault condition. The units also feature a communications port that can be used with communication modules listed in the 777 accessories section to form a Modbus, DeviceNet, Profibus, or Ethernet network. Up to 99 units can be remotely monitored and controlled from a PC, PLC, or SCADA system, and data logging through a PC with the optional Solutions software. This capability allows for a simple, cost-effective way to meet new requirements for arc-flash safety.

Littelfuse

77C Symcom 1-Phase Overload Relay/ 100-24

MFR: Littelfuse

MFR #: 77C

UPC: 079458991192

Item #: 1261620

Available to Order

$1717.18 each

Availability

Location	Available Qty

Used On Systems Up To 1 kV.

Littelfuse

INFORMER Relay Series Remote Diagnostic Tool For Sin

MFR: Littelfuse

MFR #: INFORMER

UPC: 079458994216

Item #: 1029250

Available to Order

$928.63 each

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The ARP Series is used in systems where equal run time for two motors is desirable. The selector switch allows selection of alternation of either load for continuous operation. LEDs indicate the status of the output relay. This versatile series may be front panel mounted (BZ1 accessory required) or 35 mm DIN rail mounted with an accessory socket. Operation: Alternating: When the rotary switch is in the alternate position, alternating operation of Load A and Load B occurs upon the opening of the control switch S1. To terminate alternating operation and cause only the selected load to operate, rotate the switch to position A to lock Load A or position B to lock Load B. The LEDs indicate the status of the internal relay and which load is selected to operate. Note: Input voltage must be applied at all times for proper alternation. The use of a solid-state control switch for S1 may not initiate alternation correctly. S1 voltage must be from the same supply as the units input voltage (see connection diagrams on datasheet). Loss of input voltage resets the unit; Load A becomes the lead load for the next operation. Duplexing (Cross Wired): Duplexing models operate the same as alternating relays and when both the Control (S1) and Lag Load (S2) Switches are closed, Load A and Load B energize simultaneously. The DPDT 8-pin, cross-wired option, allows extra system load capacity through simultaneous operation of both motors when needed. Relay contacts are not isolated.

Littelfuse

ARP43S SSAC Alternating Relay

MFR: Littelfuse

MFR #: ARP43S

UPC: 079458991475

Item #: 729753

Available to Order

$475.63 each

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The ISS-102 is a two-channel, intrinsically-safe switch designed for multiple uses including a pump-up/pump-down (latching) controller or two-channel switch. Two LEDs indicate the state of the intrinsically-safe inputs and output relays and user-selectable options are available including a variable resistance threshold for float inputs. The ISS-102 enclosure is surface or DIN rail mountable. -LC Each input channel is active when the corresponding switch is closed. When the lag input (CH2) is activated, the output closes. Applying latching logic, the output contact remains closed until the lead (CH1) and the lag (CH2) inputs are deactivated. Sensitivity is fixed at 100kOhms with a debounce time delay of 2 seconds. -DCS This dual-channel switch has a debounce delay feature of 0.5 seconds. Resistance probes or switches can be used on its inputs. Two LEDs illuminate the output state of either form A relay. Sensitivity is fixed at 100kOhms with a debounce time delay of 0.5 seconds. -MC By selecting the proper functionality through the dip switches, you can define a pump-up or pump-down, single or dual channel non-latching switch. The sensitivity adjustment (4.7k-100kOhms) allows you to define the input impedance at which the output relays (one form A & one form C) will change state, with a debounce time delay of 0.5 or 2 seconds.

Littelfuse

ISS-102ACI-MC Symcom 2-Ch Intrin-Safe Sw/120V/Dual-

MFR: Littelfuse

MFR #: ISS-102ACI-MC

UPC: 079458994278

Item #: 1371367

Available to Order

$1220.93 each

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Used On Systems Up To 5 kV.

Littelfuse

ER-5KV ER-5KV Series Res Sensing 20K 5000V L-L

MFR: Littelfuse

MFR #: ER-5KV

UPC: 079458977936

Item #: 1311635

Available to Order

$8232.28 each

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The FS300 Series of solid-state flashers were specifically designed to operate lamp loads. Their two-terminal series connection feature makes installation easy. The high immunity to line noise and transients makes the FS300 Series ideal for moving vehicle applications. All solid-state construction means reliability and long life. The FS300 Series offers a factory fixed flash rate of 75 FPM or may be ordered with a fixed, custom flash rate ranging from 60 to 150 FPM. Operation: Upon application of input voltage, the T2 OFF time begins. At the end of the OFF time, the T1 ON time begins and the load energizes. At the end of T1, T2 begins and the load de-energizes. This cycle repeats until input voltage is removed. Reset: Removing input voltage resets the output and the sequence to T2.

Littelfuse

FS312 SSAC Dc Flasher

MFR: Littelfuse

MFR #: FS312

UPC: 079458993547

Item #: 789423

Available to Order

$300.40 each

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The ECS Series of single-phase AC current sensors is a universal, overcurrent or undercurrent sensing control. Its built-in toroidal sensor eliminates the inconvenience of installing a stand-alone current transformer. Includes onboard adjustments for current sensing mode, trip point, and trip delay. Detects over or undercurrent events like locked rotor, loss of load, an open heater or lamp load, or proves an operation is taking place or has ended. Operation: Input voltage must be supplied at all times for proper operation. When a fault is sensed throughout the trip delay, the output relay is energized. When the current returns to the normal run condition or zero, the output and the delay are reset. If a fault is sensed and then corrected before the trip delay is completed, the relay will not energize and the trip delay is reset to zero.

Littelfuse

ECSL61AH SSAC Current Sensor

MFR: Littelfuse

MFR #: ECSL61AH

UPC: 079458992762

Item #: 1090804

Available to Order

$627.83 each

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The PCR Series of photo control is a combination of precision electronic circuitry, electromechanical output, and unique molded plastic housing. Designed and built to meet the demands of the most rigorous requirement of tower and obstruction lighting control, each unit is factory calibrated to meet FAA and FCC specifications. Electronic circuit, output contactor, and terminal block are all contained within front plastic housing. Edge support molded into the bottom edge of housing allows easy wiring of new and existing installations. Available with or without cast aluminum junction box. Operation: When the amount of light sensed falls below the actuation level for energization, the output relay energizes. Conversely, when the amount rises above the actuation level for de-energization, the output relay de-energizes.

Littelfuse

PCR11 SSAC Photo Electric Control

MFR: Littelfuse

MFR #: PCR11

UPC: 079458997750

Item #: 1366356

Available to Order

$1886.38 each

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The 460-100-SP is used on 95-120VAC, 50*/60Hz single-phase motors and the 190-240VAC, 50*/60Hz single-phase motors to protect them from damaging high and low voltage conditions. An adjustment knob allows the user to set a 1-500 second restart delay. The variable restart delay is also a power-up delay and can be utilized to stagger-start motors on the same system. A unique microcontroller-based, voltage-sensing circuit constantly monitors the voltage to detect harmful power line conditions. When a harmful condition is detected, the relays output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level and a specified amount of time has elapsed (restart delay). The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.

Littelfuse

460-200-SP Symcom 1-Phase Voltage Monitor/ 190-2

MFR: Littelfuse

MFR #: 460-200-SP

UPC: 079458990553

Item #: 878263

Available to Order

$503.23 each

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The TSD2 Series is designed for more demanding commercial and industrial applications where small size and accurate performance are required. The factory calibration for fixed time delays is within 1% of the target time delay. The repeat accuracy, under stable conditions, is 0.1% of the time delay. The TSD Series is rated to operate over an extended temperature range. Time delays of 0.1 seconds to 100 hours are available. The output is rated 1A steady and 10A inrush. The modules are totally solid state and encapsulated to protect the electronic circuitry. Operation (Interval): Upon application of input voltage, the time delay begins. The output is energized during the time delay. At the end of the time delay, the output de-energizes and remains de-energized until input voltage is removed. Reset: Removing input voltage resets the time delay and output.

Littelfuse

TSD24145S SSAC Digi-Timer (Interval)

MFR: Littelfuse

MFR #: TSD24145S

UPC: 079458020526

Item #: 866239

Available to Order

$305.43 each

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The 460 is a 3-phase voltage monitor that protects 190-480VAC or 475-600V, 50/60Hz motors regardless of size. The product provides a user selectable nominal voltage setpoint and the voltage monitor automatically senses line voltage. This unique microcontroller-based voltage and phase-sensing device constantly monitors the 3-phase voltages to detect harmful power line conditions such as low, high, and unbalanced voltage, loss of any phase, and phase reversal. When a harmful condition is detected, the 460 output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for a specified amount of time (restart delay). The trip and restart delays prevent nuisance tripping due to rapidly fluctuating power line conditions. All 460 models feature adjustable 1-30 second trip delay, 1-500 second restart delay, 2-8% voltage unbalance trip point, and one form C contact except where noted.

Littelfuse

460-L Symcom 3-Phase Volt Mon/ 190-480V/ Ad

MFR: Littelfuse

MFR #: 460-L

UPC: 079458990607

Item #: 1148856

Available to Order

$454.05 each

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