ABB SACE T4H 250 3 Pole 600V Molded Case Circuit Breaker

ABB SACE Tmax T4H250 is a three-pole molded-case circuit breaker in ABB’s Tmax SACE line, rated for 600 V AC and built on a 250 A frame to protect feeders in industrial and large commercial power-distribution schemes. Some variants are designed to accommodate electronic trip units, for example the T4H-250-PR221DS-I configuration lists In = 250 A in a 3-pole arrangement, delivering coordinated long-time and instantaneous protection. Depending on the exact variant, interrupt ratings shown in ABB literature range—from about 65 kA at 480 V for some T4H250 configurations to 25 kA at 600 V for other Tmax configurations—so the precise figure must be confirmed by the specific catalog number. The T4H250 family is part of ABB's SACE Tmax molded-case breakers, designed for reliable overload and short-circuit protection in low-voltage distribution, with the familiar thermal-magnetic trip mechanism and compatibility with ABB accessory options.