The LiftMaster 30-22CBNC Contact, Normally Closed (RE) is a replacement contact block used in LiftMaster control stations and operator accessories to provide a normally closed (NC) circuit within the control wiring. Commonly integrated behind compatible push-button stations and selector switches, this NC contact supports functions such as stop, interlock, or safety inputs on commercial door operators, gate operators, and related access control systems. It is suited for replacement and maintenance scenarios where an NC contact is required to restore reliable operation.
In use, the normally closed contact remains closed at rest and opens when the actuator is engaged, enabling typical control logic defined by the operator’s wiring diagram. Installation should be performed by qualified personnel, with power disconnected, and wiring terminated to the appropriate COM and NC terminals as specified in the LiftMaster operator or control station manual. This component is appropriate for residential and commercial applications that require an NC contact within the control circuit; confirm compatibility against the parts list for your specific LiftMaster operator or push-button station before ordering.