ABB A1A 125 TMF 16-400 3P Fixed MCCB – 1SDA068746R1 This molded case circuit breaker (MCCB) from ABB’s A1A series is designed for low-voltage distribution protection. It features a 125A frame with a thermal magnetic trip unit (TMF) adjustable from 16A to 400A. The unit comes in a 3-pole configuration and is fixed-mounted, making it ideal for protecting circuits in industrial and commercial installations. Frame Size: 125A Trip Unit Type: TMF (Thermal Magnetic) Adjustable Range: 16–400A Poles: 3P Mounting Type: Fixed ABB ID: 1SDA068746R1