Schneider Electric SE 1707-S1-T21 Magnet Coil

The Schneider Electric Square D 1707-S1-T21 magnet coil is a replacement AC coil for the 1707-Series two-pole contactors and starters used in industrial control circuits. Sized as a Size 2 coil and compatible with Type D & T contactor assemblies, it provides the magnetic drive that energizes the corresponding contactor when powered. This coil is rated for 120 V AC at 60 Hz or 110 V AC at 50 Hz, aligning with common North American control voltages and enabling cross-regional use without a transformer. Designed specifically to replace the coil in 1707-S1-T21 devices, it preserves the original actuation characteristics of the assembly in motor-starting circuits and other Square D control applications that rely on coil-driven switching. As a coil-only component, it energizes the contactor to close its contacts, enabling controlled switching of motors and other loads in industrial environments where Square D equipment is deployed.