Autonics SR1-1475-N Solid State Relay

Autonics SR1-1475-N is a single-phase solid-state relay with SPST-NO output, rated for 75 A and designed to switch a 48–480 VAC load. The device accepts a DC control signal in the 4–30 V range, making it compatible with common industrial controllers and PLCs, while the output is intended for 48–480 VAC operation. It is built as a detachable heatsink type, enabling straightforward thermal management in panel-mounted installations and allowing compatibility with separate heatsinking solutions. As part of Autonics’ SR1 family, the SR1-1475-N provides solid-state switching with electrical isolation between control and load circuits, suitable for driving single-phase heating elements, resistive and inductive loads, and other AC devices in automation and equipment systems. With a nominal 75 A load current rating, it supports robust performance in moderate to heavy-load applications, and its normally-open contact configuration ensures the load remains off until the DC input is applied.