AutomationDirect: Gefran GRM-H Series Power Controllers
Gefran GRM-H series SCR power controllers convert analog signals (0–10 V, 4–20 mA), PWM duty-cycle outputs, potentiometer, and discrete ON/OFF commands from PLCs and PID controllers into precise SCR-based control of AC power for industrial heating applications. These ultra-compact controllers are available in 10 A, 25 A, 50 A, and 75 A models rated for 480 VAC (60-530 VAC working range). They provide advanced current limiting and continuous load monitoring to improve heater protection and process stability.
