Mars Auxiliary A2L 1 NO - 910 780 7593

Need multiple “proof” or control signals that both close when equipment runs? This 2‑NO auxiliary provides two independent normally‑open contacts that change state together when the contactor energizes. Typical applications include sending two separate status outputs, or controlling two low‑voltage loads - like enabling a fan relay and closing a monitoring circuit at the same time. It’s also handy when you’re staging equipment and want one signal to confirm operation while the other triggers the next step in a control sequence. In retrofit panels, using an auxiliary like this can reduce the need for extra relays, keeping the control side cleaner and easier to troubleshoot. This unit sits in the A2L‑compliant auxiliary switch lineup designed to pair with compatible contactors, supporting modern HVAC/R control builds where updated A2L-ready parts are preferred.