ABB HD4/W 17.12.32 Vacuum Circuit breaker – Medium Voltage

Description

The ABB HD4/W 17.12.32 is a medium-voltage SF₆ gas-insulated circuit breaker designed for indoor applications, offering reliable protection for electrical systems up to 17.5 kV. It features a rated current of 1250 A and a short-circuit breaking capacity of 31.5 kA, making it suitable for various industrial and utility applications. The HD4/W series employs an “autopuffer” breaking technique, utilizing self-generated gas pressure to extinguish arcs efficiently without current chopping or restriking, thereby minimizing overvoltages during operation. Its withdrawable design allows for easy installation and maintenance within compatible switchgear systems. The circuit breaker adheres to IEC 62271-100 standards, ensuring high performance and safety in medium-voltage power distribution networks .