Square D 1707S1T21A Contactor Coil is a replacement magnet coil for Square D’s 1707 Series motor starters, configured for NEMA Size 2, Type D & T units. The coil is a 120 VAC device used to energize the magnetic starter and close the 2-pole contactor when control voltage is applied. Designed as a direct-fit replacement for 1707-S1-T21A coils, it pairs with Size 2, Type D & T contactors in motor control applications and other panel-mounted control circuits.
