Camden CM-1000/42 DPDT Momentary Contact Switch

Overview

The CM-1000/42 is a surface-mount DPDT momentary contact switch rated 6 amperes @ 125 volts AC and 3 amperes @ 30 volts DC. Built from 1/4-inch thick cast aluminum in a single-piece die-cast housing, it handles door strike activation, electromagnetic lock control, and overhead door operation. The momentary contact design closes the circuit only while pressed, making it ideal for push-button access control where you need positive release without latch hold — critical for life-safety door strike wiring where accidental sustained closure creates a hazard.

Compatibility

The CM-1000/42 integrates with 30 VDC access control systems, electromagnetic strike controllers, and magnetic lock power supplies operating in that voltage window. It accepts standard mortise cylinders (1 inch to 1 1/4 inch), allowing key-based activation for restricted-access applications. The switch output is compatible with any door control circuit — electric strikes, solenoid locks, overhead door operators, and shunt/bypass circuits for CCTV and alarm panels — that expects a momentary dry-contact closure rated for the load. Wall, pipe, or pedestal mounting options accommodate corner installations, pillar-mounted scenarios, and surface configurations where flush mounting isn't feasible.

Installation Notes

The housing includes a heavy-duty rubber gasket rated for indoor or outdoor use — moisture ingress is not a concern in typical commercial vestibules, but verify gasket condition after seasonal temperature swings. Wiring arrives color-coded with 18 AWG soldered leads and heat-shrink sleeves over contacts — no additional termination is needed in most strike controller inputs. The cylinder sits flush to the faceplate with locators preventing rotation; no set screws required. Brushed aluminum finish resists tampering, and the casted center rib protects the switch mechanism from impact. Tamper-proof screws and driver are included. One or two switches may be installed in the same housing for dual-circuit scenarios (e.g., strike + auxiliary alarm input).