The Square D 8903SM04 is a multi‑pole lighting contactor used for switching and controlling large lighting loads in commercial and industrial electrical systems. It typically includes multiple contacts and is designed to handle the higher current requirements of lighting circuits and electrical heating applications. The contactor operates with an electromagnetic coil that closes the contacts when energized, allowing a low‑power control signal to switch higher‑power lighting circuits. It is suited for panel mounting and integrates with lighting control panels and power distribution equipment. The unit provides reliable switching performance and long service life in demanding electrical environments where multiple circuits must be controlled simultaneously.
Listed by: Renee (Sales Team)
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7200 Fair Oaks Blvd Suite 120
Carmichael CA 95608
Business Hours: Monday-Friday: 9:00 am to 5:00 pm (PST)