Siemens HA161234 Auxiliary Switch is a 1 normally open / 1 normally closed auxiliary contact kit designed for Siemens VB II heavy‑duty safety switches in the 30–200 A range. The two isolated contacts provide signaling or interlock functionality for control circuits, with a kit rating of 10 A at up to 600 V AC, and it mounts on top of the VBII switch assembly for a compact, factory‑matched solution. The accessory uses standard wiring terminals (1/2 and 3/4) to integrate with Siemens industrial power distribution setups, extending the safety switch’s control logic without altering the main switching path.
