Celduc SO Series Solid State Relay, 50 A Load, Chassis Mount, 480 Vrms Load, 30 Vdc Control

The Celduc product is a solid state relay that is based on the phase angle controller with analogue control to adjust power on resistive loads. It has a self adaptive frequency range of 40 Hz to 70 Hz..

IP20 protection by flaps on terminals
Overvoltage protection by varistor