Schneider Electric Square D 8903SM012 Lighting Contactor

Schneider Electric’s Square D 8903SM012 Lighting Contactor is a four‑pole, mechanically held device designed to switch lighting loads in commercial and industrial control panels. It is rated for up to 30 A and energized by a 120 VAC coil (110–120 V, 50/60 Hz variants), enabling reliable integration with standard lighting circuits. This model belongs to the Square D Type S family of lighting contactors, offering robust construction suitable for repeated cycling in panel installations. When the coil is energized, the contacts close to complete the lighting circuit, and de‑energization returns them to the open position, making it suitable for controlling banked lighting such as fluorescent or LED fixtures in warehouses, offices, and similar spaces.