ACV Switch 2p yellow 54766017

The ACV 54766017 is a two-pole switch with a yellow housing, categorized under plugs and connectors. It is designed to manually open or close a low-voltage or mains circuit, typically for service isolation, mode selection, or as a manual reset device in a control panel. This switch is compatible with ACV Smart ME 210, HeatMaster 71, Prestige 24, and Solo MK2 boiler models. The two-pole configuration allows simultaneous switching of both live and neutral (or two phases) in a single action, which is common in safety-related disconnection points. The yellow color often indicates a special function, such as an emergency stop or manual lockout reset, depending on the system design.

When selecting a replacement switch of this type, verify the number of poles, contact rating (current and voltage), actuation style (toggle, push-button, rotary), and ingress protection if exposed. Ensure the contact configuration (normally open, normally closed, or changeover) matches the existing wiring, and that mechanical fixing dimensions are compatible with the panel cut-out or mounting bracket. If the switch is part of a connector assembly or pre-wired harness, confirm the plug connector matches the mating receptacle in pin count and keying to avoid incorrect installation.

Switch contact failure can mimic a faulty control board or broken wire. To diagnose, test continuity across the terminals with the switch in both positions. If the switch is part of a connector assembly, check for loose connections or corrosion. Visual inspection may reveal physical damage or overheating signs.