ABB T25DU14 Relay

ABB TA25DU-14 (often cataloged as T25DU14) is a 3-pole thermal overload relay designed for motor protection in three‑phase circuits. It provides an adjustable protection current from 10 A to 14 A and is rated for a maximum main‑circuit voltage of up to 500 V, making it suitable for standard industrial motors in control panels. This relay is part of ABB’s TA25DU family of economical electromechanical overload protections that pair with a contactor to guard the motor against overheating and overcurrent, with the TA25DU-14M variant documented for similar applications. In use, it interrupts motor current in the main circuit when the preset current is exceeded, helping prevent winding damage and insulation failure. The device is designed for panel mounting in industrial applications and supports a three‑pole configuration to protect all three phases of a standard motor supply. With ABB’s heritage tracing back to ASEA Brown Boveri, the TA25DU-14/T25DU14 continues to be stocked by distributors under both naming conventions, reflecting compatibility with legacy equipment and modern ABB catalogs.