Industrial SHPF1-480-40-CL-01 SCR Power Control

Industrial SHPF1-480-40-CL-01 SCR Power Control is a rugged, single-phase phase-fired controller from AMETEK HDR Power Systems that delivers precise, infinitely variable power to resistive or inductive loads at 480 VAC. The 40 A RMS rating means it can handle up to 40 amps continuous, and the unit accepts a 4-20 mA control signal (with an on-board 500-ohm input resistor) to set the firing angle; the suffix CL indicates RMS current limit/overcurrent protection, while 01 selects the 4-20 mA input option. Designed for 50/60 Hz operation, SHPF1 devices support standard line voltages of 120, 240, 400, 480, and 575 VAC, and use phase-fired control with a pair of inverse-parallel SCRs synchronized to the mains; the 4-20 mA input is optically isolated and features a soft-start ramp of about 12 line cycles. Typical applications include heating elements, transformers, and other process loads where controlled power delivery with overcurrent protection and flexible control interfaces is essential.