"HNF990U (MCCB, 1600A, 50KA Icu, Adjustable Thermal 0.4 - 1 In, Adjustable Magnetic 2.5 - 10 In) The HNF990U is a 1600A high-capacity molded case circuit breaker, built to handle extreme electrical loads in industrial and high-power applications. With an interrupting capacity (Icu) of 50KA, it offers advanced protection against high fault currents, overloads, and electrical surges. The adjustable thermal trip range from 0.4 to 1 In allows precise overload protection, while the adjustable magnetic settings from 2.5 to 10 In provide rapid response to short circuits and transient faults. This MCCB is perfect for mission-critical applications, ensuring uninterrupted operation and maximum safety in high-power installations."