Furnas Electric Company D71221-42 Relay Coil 120V 60 Hz

Furnas Electric Company D71221-42 Relay Coil is a standalone coil component designed to energize a matching Furnas relay. The model is described as a dual voltage coil with 120V 60 Hz operation, suitable for control circuits and equipment that rely on Furnas relays. When the coil is energized, it generates a magnetic field that moves the relay’s internal contacts to switch circuits, enabling controlled actuation in automation and machinery control. This specific coil (D71221-42) is intended to be paired with the corresponding Furnas relay contact assembly to form a complete switching device, ensuring proper compatibility within Furnas’ relay families. The designation D71221-42 identifies the exact coil specification required by installations using Furnas relays that support this coil configuration, supporting accurate replacement and maintenance in legacy systems.