Banner Engineering SI-HG80DQD Safety Interlock Switch

Banner Engineering's SI-HG80DQD is a hinge-style safety interlock switch with a zinc die‑cast housing that mounts to a hinged guard, delivering a safety-stop signal when the guard reaches its switching point. The unit integrates the actuator and switch in a single, one-piece design to simplify installation and alignment. It provides SPDT contacts (1 NC/1 NO) and uses a micro 4‑pin M12 dual-key quick-disconnect with an inline connection, rated for up to 250 VAC at 3 A and 60 VDC. Built for rugged environments, it carries an IP67 enclosure rating and measures 97 x 72 x 19 mm. The operating range spans 180°, with a minimum operating temperature of -25 °C and a maximum of 70 °C, and the mechanical life is specified at around 1 million cycles. From a safety-certification perspective, the SI-HG80DQD is rated Cat 4, with SIL CL 3 and PL e, indicating suitability for high-reliability guarding applications. Typical use cases involve hinged guards on machines where opening the guard must stop the equipment, with the interlock feeding a safety monitoring system to ensure proper stop and reset sequences.