Linergy NEMA sectional terminal blocks are for terminating wires in a control panel and are designed to NEMA standards. This transient voltage suppression module is designed to suppress voltage spikes. Voltage spikes can be generated when the coil circuit is opened. By suppressing the voltage spikes, interference with the proper operation of nearby solid state control circuits can be minimized. The circuit in this block consists of an RC circuit and is designed to suppress the voltage transient to approximately 200% of peak line voltage. The module is wired across the coil and is designed for 120 volt coils. The box lug connectors are for use with solid or stranded copper wires from #18 through #10 AWG wires. The nylon block is molded in the natural color of nylon (off white). This block is UL component recognized and CSA certified.