The ABB KP40 4000A Circuit Breaker is a high-capacity, industrial-grade circuit breaker designed for medium- to high-voltage power distribution systems. With a rated current of 4000 amperes, it delivers robust protection, reliable operation, and efficient fault interruption for demanding industrial, utility, and commercial applications.

Engineered with ABB’s advanced switching technology, the KP40 ensures fast and safe interruption of overcurrent, short-circuit, and earth-fault events, minimizing equipment damage and reducing downtime. Its durable mechanical and electrical construction guarantees long-term performance even under extreme load conditions.

The breaker features a compact and modular design for flexible integration into switchgear assemblies, simplifying installation and maintenance. Its reliable operating mechanism ensures precise and consistent switching performance, while optional electronic trip units provide advanced monitoring, diagnostics, and system control capabilities. Ideal for medium- to high-voltage networks requiring high reliability, operational safety, and efficient power management, the ABB KP40 4000A Circuit Breaker combines cutting-edge engineering with proven durability for superior performance in power distribution systems.

ABB KP40 4000A Air Circuit Breaker, Operating mechanism (manual or motorized), Line and load terminals, Trip unit (LSI or LSIG if applicable), Arc chute assembly, Racking/drawout mechanism (if applicable), Control wiring harness, Mounting hardware, User manual and installation guide, Calibration or test certificate (if available), Safety and compliance documentation, Manufacturer warranty card, Original ABB packaging