ABB A1B 125 TMF 50-500 3P Fixed MCCB – 1SDA066702R1 This molded case circuit breaker (MCCB) from ABB’s A1B series features a 125A frame and a thermal magnetic trip unit (TMF) with an adjustable current range from 50A to 500A. Designed with 3 poles and fixed mounting, it offers solid protection against overloads and short circuits in industrial and commercial settings. Frame Size: 125A Trip Unit Type: TMF (Thermal Magnetic) Adjustable Range: 50–500A Poles: 3P Mounting Type: Fixed ABB ID: 1SDA066702R1