CE certificate AC SSR of Three Phase (1) CE certificate (2)control voltage:3-32VDC load ... insulation 2500 V, with overheating protection 3. Zero trigger, the power grid without interference, the temperature over 40 degrees fan automatically ... of overheating protection 4. Non-contact, no spark, no noise, steady work, and LED-off instructions 1000A AC SSR Complete Appliance Of Three ...