WEG CWM18-00-40V18 : 4-Pole Lighting Contactor, Normally Open, 120 VAC 50/60 Hz Coil Voltage, 30A Maximum Amperage Rating Ballast / LED, IEC 60947 / UL 508 / CSA 22.2 #14 Standards
The WEG CWM18-00-40V18 is a 4-pole, normally open, electrically held lighting contactor rated for 30A ballast and LED loads at up to 600VAC, with a 120VAC control coil. Designed for lighting control panels and energy management systems, a single 120VAC control signal switches up to four lighting circuits simultaneously.
Best for: Standard commercial lighting control where a scheduler, occupancy sensor, or building automation output energizes the coil to turn lights on, and lights are expected to go off when the control signal drops.
Why Normally Open — and Why It Matters for Your Application
A normally open (NO) lighting contactor keeps lights off by default and closes its poles only while the coil is energized. This is the conventional choice for scheduled and sensor-driven lighting: the control system asserts an on signal, and the absence of that signal means off. It also means lights de-energize if the control circuit loses power, which is the desired behavior for energy-code compliance, automatic shutoff requirements, and unoccupied-space control. If your sequence of operations instead calls for a fail-safe lights-on state, the normally closed CWM18-00-04X18 is the correct part.
| Specification | Value |
|---|---|
| Part Number | CWM18-00-40V18 |
| Number of Poles | 4 |
| Contact Configuration | Normally Open (NO) — Electrically Held |
| Coil Voltage | 120 VAC 50/60 Hz |
| Contact Rating — Ballast / LED | 30A @ 600VAC Maximum |
| Load Types Rated | Ballast, LED, General Purpose Lighting |
| Short-Circuit Coordination | Type 1 and Type 2 |
| Standards / Approvals | UL 508, CSA 22.2 #14, IEC 60947, CE, RoHS |
| Geographic Suitability | USA, Canada, International |
| Mounting Options | DIN Rail and Surface Mount |
| Series | WEG - CWM Series |
Also Available in This Configuration
Frequently Asked Questions
- # of Poles:
- 4
- Coil Voltage:
- 120VAC
- Current Rating:
- 30A
- Configuration:
- Normally Open
