ABB A1A 125 TMF 20-400 3P Fixed MCCB – 1SDA066511R1 This is a molded case circuit breaker (MCCB) from the ABB A1A series. It features a 125A frame size and includes a thermal magnetic trip unit (TMF) with an adjustable current range from 20A to 400A. Designed with 3 poles and fixed mounting, it ensures reliable circuit protection in various industrial and commercial power distribution systems. Frame Size: 125A Trip Unit Type: TMF (Thermal Magnetic) Adjustable Range: 20–400A Poles: 3P Mounting Type: Fixed ABB ID: 1SDA066511R1