8903L multipole lighhting contactors are for lighting control applications. Available in either mechanically held or electrically held versions. Can switch up to 30 A fluorescent and 20 A tungsten lighting loads. The contacts are field convertible from NO to NC. Supplied with a 110/120 VAC 50/60 Hz interchangeable operating coil but other coils are available in a wide variety of common volages up to 600VAC. Contactor is in a NEMA 1 painted sheet steel enclosure but a variety of other enclosure types are available. Coil and contacts are easily replaced. Enclosure is 12.69 inches tall, 7.81 inches wide and 6.03 inches deep. These lighting contactors are UL Listed and CSA Certified.