The Siemens 5ST3010-0HG is a SENTRON auxiliary switch designed to provide remote indication of the operating or trip status of compatible Siemens 5SJ4 series miniature circuit breakers (MCBs) in electrical distribution and control systems. It features one normally open (1 NO) and one normally closed (1 NC) contact for integration with monitoring, signalling, and automation circuits. The auxiliary switch is rated for operation up to 480 V AC with a minimum operating voltage of 12 V AC/DC and complies with UL 489 requirements. It has an IP20 protection rating, measures 110 x 9 x 70 mm, and provides an electrical endurance of approximately 6,000 operating cycles.
