The Omron G3PE-535B-2N is a 3-phase solid state relay designed for heater control — not general-purpose switching. The 200 to 480 VAC output range covers 208, 240, 400, and 480 VAC line voltages commonly found in industrial heater panels. Zero-cross switching (equipped) means the relay turns on only at the voltage zero crossing, reducing inrush and electrical noise — critical for long heater element life and for panels that share a supply with PLCs or sensitive instrumentation.
Input and control side
The control input accepts 12 to 24 VDC (operating range 9.6 to 30 VDC) and draws 10 mA max at 24 VDC. That is a standard PLC digital output signal — no separate power supply needed if your controller provides 24 VDC. The operate voltage is 9.6 VDC max, so a 12 VDC nominal supply with droop still triggers it. Release voltage is 1 VDC min, meaning the relay drops out cleanly when the control signal falls below 1 V — no partial conduction. Screw terminals on both control and load sides simplify panel wiring; no special crimp tool required.
Load side and surge capability
Minimum load current is 0.5 A — below that the zero-cross circuit may not latch reliably, so do not use this SSR for switching very small loads like pilot lamps or signal transformers. Inrush current resistivity is 440 A for 60 Hz 1 cycle, and permissible I²t is 1260 A²s. That means the relay can handle the cold-start surge of incandescent heaters or short-circuit transients up to that energy without damage. The load carrying capacity is 29.0 kW at 480 VAC — a direct match for a 30 kW heater bank derated slightly. Isolation is via phototriac, providing galvanic isolation between control and load circuits.