Siemens 3RA9012-5BC28 SIRIUS accessory, pilot light assembly, push-to-test, white lens, 120 VAC, 1NO + 1NC contacts, cage clamp connection.
The 3RA9012-5BC28 is a GM-SET pilot light assembly — item number 12250 — designed as a snap-on accessory for Siemens SIRIUS motor starters. The cage clamp connection means you land the wires without screwing down terminals — push the spring, insert the stripped conductor, release. Faster for panel build and less prone to vibration loosening than a screw clamp.
GM-SET is Siemens' designation for a pilot light module that snaps onto the SIRIUS contactor or starter. Push-to-test means you press the lens to check the bulb without energizing the circuit. Cage clamp is the spring-loaded wire termination — strip 8-9 mm, push the orange button, insert the wire, release. No screwdriver needed.
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