ABB 1SDA102703R1 Thermomagnetic Release 3 Pole

ABB 1SDA102703R1 is a three-pole thermomagnetic release (TMA) for the Tmax XT5 family, UL/CSA listed for use with three-pole XT5 molded-case circuit breakers in AC and DC circuits. The part is associated with the XT5 3-pole lineup and carries a 300-3000 A range specification for the thermomagnetic release, enabling protection against overloads (thermal) and short circuits (magnetic). This release coordinates with ABB's XT5 trip scheme to provide rapid interruption during faults while maintaining reliability under normal operation. Typical applications include industrial power distribution panels, motor control centers, and other three-phase electrical installations where robust overcurrent protection is needed. The model number 1SDA102703R1 identifies this exact release variant within ABB's Tmax XT5 range, and ABB's catalog entries confirm its UL/CSA listing and XT5 compatibility.