ABB A1N 125 TMF 16-400 3P Fixed MCCB – 1SDA068749R1 This ABB molded case circuit breaker (MCCB) from the A1N series is equipped with a 125A frame and a thermal magnetic trip unit (TMF) with an adjustable current range from 16A to 400A. It features 3 poles and a fixed mounting type, delivering dependable overload and short-circuit protection for industrial and commercial power distribution systems. Frame Size: 125A Trip Unit Type: TMF (Thermal Magnetic) Adjustable Range: 16–400A Poles: 3P Mounting Type: Fixed ABB ID: 1SDA068749R1