Autonics SRH3-4275 Three-Phase Solid State Relay, Panel Mount SSR

The Autonics SRH3-4275 is a three-phase solid state relay (SSR) with an integrated heatsink, designed for reliable AC load switching in industrial heater and motor-control applications. It supports 90–240 VAC input control, 24–240 VAC load voltage, and up to 75 A load current. The relay uses zero-cross switching for reduced electrical noise and smoother AC load operation.

Features:

Three-phase SSR, 3PST-NO / 3 Form A output configuration
75 A rated load current
24–240 VAC rated load voltage
90–240 VAC rated input voltage
Integrated heatsink for improved heat dissipation
Zero-cross turn-on switching method
Photo-coupled relay design for electrical isolation
Screw terminal connection style
Panel / chassis mount design
4,000 VAC dielectric strength
Green LED input indicator
Overheating alarm function with red LED indicator on SRH series models
Suitable for industrial AC load control, heater control, and three-phase switching applications