These are zero crossing, AC solid state relay with logic signal control, built in heat sink with heater break diagnostics (Hb function), adjustable setpoint and selectable current scale with junction overheat protection available as an option. Click here to view the two options

The GD series of solid state relays are offered with 40A currents ratings and voltage 480 VAC, and VDC input control signal.

Voltage transistors are protected by MOV (varistor).

Thanks to their high performance, they are appropriate for very short switching times, with millions of operations without wear on components.
The GD series of relays must be used with an appropriate heatsink.
Non-repetitive voltage: 1200 Vp
Rated voltage: up to 530VCArms
Input control range: 5…30 VDC
Optical isolation: 4000Vrms (input/output)
Built-in HB diagnostics (partial heater break, junction in short circuit)
Overheat protection (optional)
2-color control signal LED in input/alarm state
On-board MOV (varistor)