ABB A1A 125 TMF 100-1000 4p F F – 1SDA066534R1 This ABB molded case circuit breaker (MCCB) from the A1A series is equipped with a frame suited for up to 125A, 400A, or 630A as specified. It features a thermal magnetic trip unit (TMF) with an adjustable range from 100A to 1000A, and a 4P fixed-pole configuration for reliable overload and short-circuit protection in power systems. Frame Size: Based on model series Trip Unit Type: TMF (Thermal Magnetic) Adjustable Range: 100–1000A Poles: 4P Mounting Type: Fixed ABB ID: 1SDA066534R1