3000A 13.8kV Vacuum Circuit Breaker, 18kA, Spring Mech
The VHKX ABB-15VHKX500-3000A from ABB represents state-of-the-art vacuum interrupter technology for medium voltage circuit protection in modern power distribution networks. This vacuum replacement breaker is rated for 13.8 kV nominal voltage class with a continuous current capacity of 3000A and an interrupting rating of 500 MVA (18 kA symmetrical short-circuit current). The unit features a Basic Impulse Level (BIL) rating of 95 kV, ensuring robust insulation coordination against transient overvoltages. The stored energy spring operating mechanism provides dependable closing and opening operations with proven reliability across thousands of duty cycles. Utilizing vacuum interrupter technology, this breaker delivers clean, maintenance-friendly arc interruption with extended contact life compared to traditional air-magnetic designs. This unit is designed as a direct replacement for ITE/ABB HK/HKV 15HK-500 breakers, enabling modernization of existing switchgear installations without costly cell modifications. Available in drawout configuration, the breaker integrates seamlessly into standard metal-clad switchgear assemblies. Fully compliant with ANSI C37.06, IEEE C37.09, this circuit breaker meets or exceeds all applicable safety and performance requirements. Ideal applications include direct replacement of ite/abb hk and hkv air-magnetic and early vacuum circuit breakers in existing hk-type metal-clad switchgear, nuclear and commercial grade applications. This circuit breaker is supported by readily available renewal parts and comprehensive technical documentation, ensuring long-term serviceability and reduced total cost of ownership for medium voltage switchgear installations.
