The 21WE40A is a lighting contactor manufactured by Furnas, a brand now part of Siemens. It is an electromechanical device used to switch electrical lighting or other AC loads in commercial and industrial control systems. The contactor has four poles and is typically rated for 20 amps with a control coil voltage of 110–120 VAC. When the control voltage is applied, the contacts close to supply power to the load, and when the voltage is removed, the contacts open to disconnect the load. These contactors are commonly used in lighting panels, motor control centers, and other industrial power distribution applications.
Listed by: Renee (Sales Team)
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