Siemens Industrial Controls 3RU2126-4AB0 Relay 318423-701 it is not interchangeable with

it is not interchangeable with QD (Quick Detachable) style bushings

Direct Interchangeability: Fully compatible with the SM185-3RI and SM185S3RC specifications for faster job site turnaround

reducing mechanical stress during equipment relocation

The Trane CNT4821 Limit Switch is a high-reliability safety component engineered for precision thermal monitoring in furnaces and air handlers

both part numbers refer to the same physical unit

Siemens Industrial Controls 3RU2126-4AB0 Relay 318423-701 it is not interchangeable withThe Siemens 3RU2126 4AB0 is a high performance thermal overload relay engineered for precise protection of three phase motors in industrial and HVACR applications. Designed for direct mounting on SIRIUS 3RT2 size S0 contactors, this unit provides a reliable current dependent protection solution against excessive temperature rises caused by overloads or phase failure. With an adjustable current setting range of 11 16 Amps and a Class 10 trip rating, it