Class RK1 Fuses

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The all-new LLSRK_ID series fuse is the most advanced Class RK1 fuse available today providing unparalleled performance and protection to modern circuits. The patented Indicator technology provides instant identification of a blown fuse greatly enhancing system up time, while the precision formed short circuit elements virtually eliminate damage to components from unexpected electrical faults. In addition, the all new solid-state overload section has no moving parts, stopping unnecessary fatigue failures commonly found in other spring loaded fuses.

Littelfuse

LLSRK350ID LLSRK Series Fuse 600V T/D Class Rk1 350A Id

MFR: Littelfuse

MFR #: LLSRK350ID

UPC: 079458060706

Item #: 116310

Available to Order

$1401.98 each

Availability

Location	Available Qty

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Littelfuse

Fuse 600V T/D Class Rk1 125A Id

MFR: Littelfuse

MFR #: LLSRK125ID

UPC: 079458060638

Item #: 106130

Available to Order

$701.20 each

Availability

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The all-new LLSRK_ID series fuse is the most advanced Class RK1 fuse available today providing unparalleled performance and protection to modern circuits. The patented Indicator technology provides instant identification of a blown fuse greatly enhancing system up time, while the precision formed short circuit elements virtually eliminate damage to components from unexpected electrical faults. In addition, the all new solid-state overload section has no moving parts, stopping unnecessary fatigue failures commonly found in other spring loaded fuses.

Littelfuse

LLSRK1.25ID LLSRK Series Fuse 600V T/D Cls Rk1 1-1/4A Indicator P

MFR: Littelfuse

MFR #: LLSRK1.25ID

UPC: 079458055047

Item #: 341651

Available to Order

$134.48 each

Availability

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KLSR series RK1 fuses were the earliest type of current-limiting fuse developed. Their single-element, silver link design enables them to provide fast-acting overload and short-circuit protection. When used to protect inductive loads such as motors, solenoids, and transformers, KLSR series fuses must be greatly oversized to prevent opening the fuses on harmless inrush currents. In such applications, KLSR series fuses may only provide short-circuit protection. We recommend using POWR-PRO LLNRK/LLSRK series RK1, dual-element, time-delay fuses in all new applications requiring the current-limiting ability of UL Class RK1 fuses, or in existing applications where fast-acting RK1 or RK5 fuses have been opening on harmless system surges such as motor starting currents.

Littelfuse

KLSR400 KLSR Series Fuse 600V F/A Class Rk1 400A

MFR: Littelfuse

MFR #: KLSR400

UPC: 079458290936

Item #: 72555

Available to Order

$1979.40 each

Availability

Location	Available Qty

Fuse 250V T/D Class Rk1 350A

Littelfuse

Fuse 250V T/D Class Rk1 350A

MFR: Littelfuse

MFR #: LLNRK350

UPC: 079458330922

Item #: 392541

Available to Order

$699.75 each

Availability

Location	Available Qty

The all-new LLSRK_ID series fuse is the most advanced Class RK1 fuse available today providing unparalleled performance and protection to modern circuits. The patented Indicator technology provides instant identification of a blown fuse greatly enhancing system up time, while the precision formed short circuit elements virtually eliminate damage to components from unexpected electrical faults. In addition, the all new solid-state overload section has no moving parts, stopping unnecessary fatigue failures commonly found in other spring loaded fuses.

Littelfuse

LLSRK02.8ID LLSRK Series Fuse 600V T/D Cls Rk1 2-8/10A Indicator P

MFR: Littelfuse

MFR #: LLSRK02.8ID

UPC: 079458055115

Item #: 778021

Available to Order

$140.23 each

Availability

Location	Available Qty

The all-new LLSRK_ID series fuse is the most advanced Class RK1 fuse available today providing unparalleled performance and protection to modern circuits. The patented Indicator technology provides instant identification of a blown fuse greatly enhancing system up time, while the precision formed short circuit elements virtually eliminate damage to components from unexpected electrical faults. In addition, the all new solid-state overload section has no moving parts, stopping unnecessary fatigue failures commonly found in other spring loaded fuses.

Littelfuse

LLSRK01.8ID LLSRK Series Fuse 600V T/D Cls Rk1 1-8/10A Indicator P

MFR: Littelfuse

MFR #: LLSRK01.8ID

UPC: 079458055078

Item #: 779586

Available to Order

$150.35 each

Availability

Location	Available Qty

Littelfuse LLNRK and LLSRK series POWR-PRO fuses provide superior overload and short circuit protection for service entrance, main, feeder and general-purpose branch circuits up to 600 amperes. LLNRK/LLSRK series fuses can be installed in existing Class H fuse blocks to upgrade systems containing lower interrupting rating Class H one-time or renewable fuses.

Littelfuse

LLNRK225 LLNRK Series Fuse 250V T/D Class Rk1 225A

MFR: Littelfuse

MFR #: LLNRK225

UPC: 079458330892

Item #: 1004974

Available to Order

$699.75 each

Availability

Location	Available Qty

Littelfuse LLNRK and LLSRK series POWR-PRO fuses provide superior overload and short circuit protection for service entrance, main, feeder and general-purpose branch circuits up to 600 amperes. LLNRK/LLSRK series fuses can be installed in existing Class H fuse blocks to upgrade systems containing lower interrupting rating Class H one-time or renewable fuses.

Littelfuse

LLNRK010 LLNRK Series Fuse 250V T/D Class Rk1 10A

MFR: Littelfuse

MFR #: LLNRK010

UPC: 079458330656

Item #: 9385

Available to Order

$51.03 each

Availability

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Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 0.3A Ferrule

Mersen

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 0.3A Ferrule

MFR: Mersen

MFR #: A2D3/10R

UPC: 782001990589

Item #: 294036

Available to Order

Availability

Location	Available Qty

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 45A Ferrule

Mersen

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 45A Ferrule

MFR: Mersen

MFR #: A2K45R

UPC: 782001915148

Item #: 207235

Available to Order

Availability

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Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 5A Ferrule

Mersen

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 5A Ferrule

MFR: Mersen

MFR #: A2K5R

UPC: 782001915025

Item #: 207183

Available to Order

Availability

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Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 8A Ferrule SmartSpot

Mersen

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 8A Ferrule SmartSpot

MFR: Mersen

MFR #: A2D8R

UPC: 782001990787

Item #: 82409

Available to Order

$41.11 each

Availability

Location	Available Qty

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 25A Ferrule SmartSpot

Mersen

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 25A Ferrule SmartSpot

MFR: Mersen

MFR #: A2D25R

UPC: 782001990855

Item #: 42877

Available to Order

$31.55 each

Availability

Location	Available Qty

Fuse A6K-R - Class RK1 - Fast-Acting 600VAC 300VDC 225A Blade

Mersen

Fuse A6K-R - Class RK1 - Fast-Acting 600VAC 300VDC 225A Blade

MFR: Mersen

MFR #: A6K225R

UPC: 782001915834

Item #: 314305

Available to Order

Availability

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Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 3A Ferrule

Mersen

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 3A Ferrule

MFR: Mersen

MFR #: A2D3R

UPC: 782001990688

Item #: 555021

Available to Order

$42.74 each

Availability

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Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 225A Blade

Mersen

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 225A Blade

MFR: Mersen

MFR #: A2K225R

UPC: 782001915322

Item #: 207625

Available to Order

Availability

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Fuse A6K-R - Class RK1 - Fast-Acting 600VAC 300VDC 100A Blade

Mersen

Fuse A6K-R - Class RK1 - Fast-Acting 600VAC 300VDC 100A Blade

MFR: Mersen

MFR #: A6K100R

UPC: 782001915735

Item #: 281099

Available to Order

$326.90 each

Availability

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Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 350A Blade

Mersen

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 350A Blade

MFR: Mersen

MFR #: A2K350R

UPC: 782001915353

Item #: 207696

Available to Order

Availability

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Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 3.5A Ferrule

Mersen

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 3.5A Ferrule

MFR: Mersen

MFR #: A2D3-1/2R

UPC: 782001990701

Item #: 739491

Available to Order

Availability

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Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 1.4A Ferrule

Mersen

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 1.4A Ferrule

MFR: Mersen

MFR #: A2D1-4/10R

UPC: 782001990565

Item #: 739489

Available to Order

Availability

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Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 1.4A Ferrule

Mersen

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 1.4A Ferrule

MFR: Mersen

MFR #: A6D1-4/10R

UPC: 782001991616

Item #: 189340

Available to Order

Availability

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Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 250A Blade SmartSpot

Mersen

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 250A Blade SmartSpot

MFR: Mersen

MFR #: A2D250R

UPC: 782001991128

Item #: 65168

Available to Order

Availability

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Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 70A Blade

Mersen

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 70A Blade

MFR: Mersen

MFR #: A2K70R

UPC: 782001915193

Item #: 207299

Available to Order

Availability

Location	Available Qty

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 15A Ferrule SmartSpot

Mersen

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 15A Ferrule SmartSpot

MFR: Mersen

MFR #: A2D15R

UPC: 782001990824

Item #: 141185

Available to Order

Availability

Location	Available Qty

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 300A Blade SmartSpot

Mersen

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 300A Blade SmartSpot

MFR: Mersen

MFR #: A6D300R

UPC: 782001992231

Item #: 190711

Available to Order

$862.09 each

Availability

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Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 90A Blade SmartSpot

Mersen

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 90A Blade SmartSpot

MFR: Mersen

MFR #: A6D90R

UPC: 782001992101

Item #: 212077

Available to Order

Availability

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Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 500A Blade SmartSpot

Mersen

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 500A Blade SmartSpot

MFR: Mersen

MFR #: A6D500R

UPC: 782001992293

Item #: 440071

Available to Order

$1251.23 each

Availability

Location	Available Qty

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 1A Ferrule

Mersen

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 1A Ferrule

MFR: Mersen

MFR #: A6D1R

UPC: 782001991586

Item #: 105739

Available to Order

$77.93 each

Availability

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Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 0.5A Ferrule

Mersen

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 0.5A Ferrule

MFR: Mersen

MFR #: A6D1/2R

UPC: 782001991555

Item #: 1173940

Available to Order

Availability

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Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 75A Blade SmartSpot

Mersen

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 75A Blade SmartSpot

MFR: Mersen

MFR #: A2D75R

UPC: 782001990978

Item #: 171610

Available to Order

Availability

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Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 50A Ferrule

Mersen

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 50A Ferrule

MFR: Mersen

MFR #: A2K50R

UPC: 782001915155

Item #: 127534

Available to Order

Availability

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Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 6A Ferrule

Mersen

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 6A Ferrule

MFR: Mersen

MFR #: A2K6R

UPC: 782001915032

Item #: 207194

Available to Order

$74.06 each

Availability

Location	Available Qty

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 125A Blade SmartSpot

Mersen

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 125A Blade SmartSpot

MFR: Mersen

MFR #: A6D125R

UPC: 782001992156

Item #: 82016

In Stock - Check Availability

$431.17 each

Availability

Location	Available Qty

Fuse A6K-R - Class RK1 - Fast-Acting 600VAC 300VDC 70A Blade

Mersen

Fuse A6K-R - Class RK1 - Fast-Acting 600VAC 300VDC 70A Blade

MFR: Mersen

MFR #: A6K70R

UPC: 782001915704

Item #: 1064848

Available to Order

Availability

Location	Available Qty

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 300A Blade SmartSpot

Mersen

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 300A Blade SmartSpot

MFR: Mersen

MFR #: A2D300R

UPC: 782001991135

Item #: 65871

Available to Order

$541.36 each

Availability

Location	Available Qty

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 35A Ferrule SmartSpot

Mersen

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 35A Ferrule SmartSpot

MFR: Mersen

MFR #: A2D35R

UPC: 782001990909

Item #: 28363

Available to Order

$60.10 each

Availability

Location	Available Qty

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 8A Ferrule SmartSpot

Mersen

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 8A Ferrule SmartSpot

MFR: Mersen

MFR #: A6D8R

UPC: 782001991784

Item #: 49880

In Stock - Check Availability

$68.93 each

Availability

Location	Available Qty

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 80A Blade SmartSpot

Mersen

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 80A Blade SmartSpot

MFR: Mersen

MFR #: A6D80R

UPC: 782001992095

Item #: 40111

Available to Order

$215.55 each

Availability

Location	Available Qty

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 300A Blade

Mersen

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 300A Blade

MFR: Mersen

MFR #: A2K300R

UPC: 782001915346

Item #: 207670

Available to Order

Availability

Location	Available Qty

Fuse A6K-R - Class RK1 - Fast-Acting 600VAC 300VDC 110A Blade

Mersen

Fuse A6K-R - Class RK1 - Fast-Acting 600VAC 300VDC 110A Blade

MFR: Mersen

MFR #: A6K110R

UPC: 782001915766

Item #: 509671

Available to Order

Availability

Location	Available Qty

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 12A Ferrule

Mersen

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 12A Ferrule

MFR: Mersen

MFR #: A2K12R

UPC: 782001915056

Item #: 207127

Available to Order

Availability

Location	Available Qty

Fuse A6K-R - Class RK1 - Fast-Acting 600VAC 300VDC 175A Blade

Mersen

Fuse A6K-R - Class RK1 - Fast-Acting 600VAC 300VDC 175A Blade

MFR: Mersen

MFR #: A6K175R

UPC: 782001915797

Item #: 68760

Available to Order

Availability

Location	Available Qty

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 350A Blade SmartSpot

Mersen

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 350A Blade SmartSpot

MFR: Mersen

MFR #: A6D350R

UPC: 782001992248

Item #: 230260

Available to Order

$862.09 each

Availability

Location	Available Qty

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 500A Blade

Mersen

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 500A Blade

MFR: Mersen

MFR #: A2K500R

UPC: 782001915407

Item #: 207764

Available to Order

Availability

Location	Available Qty

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 600A Blade SmartSpot

Mersen

Fuse A2D-R - Class RK1 - Time-Delay 250VAC 250VDC 600A Blade SmartSpot

MFR: Mersen

MFR #: A2D600R

UPC: 782001991203

Item #: 250013

Available to Order

$843.11 each

Availability

Location	Available Qty

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 400A Blade

Mersen

Fuse A2K-R - Class RK1 - Fast-Acting 250VAC 250VDC 400A Blade

MFR: Mersen

MFR #: A2K400R

UPC: 782001915360

Item #: 207735

Available to Order

$1363.59 each

Availability

Location	Available Qty

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 3.5A Ferrule

Mersen

Fuse A6D-R - Class RK1 - Time-Delay 600VAC 600VDC 3.5A Ferrule

MFR: Mersen

MFR #: A6D3-1/2R

UPC: 782001991708

Item #: 1081993

Available to Order

Availability

Location	Available Qty