ABB A1A 125 TMF 30-400 3P Fixed MCCB – 1SDA066513R1 This molded case circuit breaker (MCCB) from ABB’s A1A series is built with a 125A frame and a thermal magnetic trip unit (TMF) that offers an adjustable current setting from 30A to 400A. The device features 3 poles and a fixed mounting configuration, delivering robust and consistent protection for electrical circuits in industrial and commercial power systems. Frame Size: 125A Trip Unit Type: TMF (Thermal Magnetic) Adjustable Range: 30–400A Poles: 3P Mounting Type: Fixed ABB ID: 1SDA066513R1