Siemens AG A02JLD64 Auxiliary Switch

Siemens A02JLD64 Auxiliary Switch is a two-form-C signaling accessory for Siemens Sentron molded‑case circuit breakers. It provides two Form C contacts—each switch offers one normally open and one normally closed contact—delivering two independent SPDT signals from a single accessory. Designed for JD, LD, and LMD frame breakers, the A02JLD64 wires directly to the breaker via a lead‑wire connection and can be mounted on either the left or right pole, enabling flexible installation in control panels. Rated for 480 VAC and 250 VDC, this auxiliary switch assembly extends monitoring and interlock capability without altering the main switching function. The kit ships as two auxiliary switches, allowing dual signaling paths for status indication, alarms, or control logic in industrial electrical systems. Common applications include remote status indication, interlock logic, or signaling in motor control centers where extra contact points are required without modifying the main breaker, and it is compatible with a wide range of Siemens JD/LD/LMD families within the Sentron lineup.