"HEF980U (MCCB, 1250A, 70KA Icu, Adjustable Thermal 0.4 - 1 In, Adjustable Magnetic 2.5 - 10 In) The HEF980U is a 1250A high-capacity molded case circuit breaker designed for large-scale industrial and commercial power networks. With an interrupting capacity (Icu) of 70KA, it delivers superior protection against overloads, short circuits, and electrical faults. The adjustable thermal trip range from 0.4 to 1 In ensures customized overload management, while the adjustable magnetic trip settings from 2.5 to 10 In provide fast response to high fault currents. This MCCB is ideal for mission-critical power distribution systems, offering maximum reliability and operational security."