... install 3. used on power regulation equipment SCR power controller, power regulatorOverviewSCR power regulators are widely used in different ... 440V AC +/- 10% 50/60HzEffective value current and refrigerating modeCompulsory air cooling mode: 40A, 60A, 80A, 100A, 160A, 200A, 300A ... If R-S-T wiring is correct, then SCR controller phase identification neon lights are onControl modePhase control voltage ...