Type S magnetic contactors and starters are for motor control applications. The pilot light kit is for use with Type S contactors and starters and 8903 lighting contactors with a control transformer (Form F4T) with a 120 VAC 60 Hz secobndary. The pilot kit is also used with NEMA Sizes 5-7 contactors and starter and 8903S lighting contactors rated at 100A or more if they have a 120 V 60 Hz coil. The pilot kit comes with a red and a green lens. The pilot kit is UL Component recognized and CSA certified.