whipp-bourne-type-ak-contactors

P&B’s range of Whipp & Bourne replacement circuit breakers and contactors have been designed for total reliability. Utilising a new vacuum contactor and the ABB VD4 vacuum circuit breaker, our Whipp & Bourne retrofits are relied upon for achieving trouble-free performance over many thousands of maintenance free operations.

Type AK Vacuum Contactor Retrofit

Utilising many parts from the original truck, including the original frame, contact arms, racking and interlock mechanism, the Type AK replacement contactor fits perfectly into your existing cubicle with no alterations. All current carrying parts are fully refurbished and re-plated. The unit is completely re-wired to your specific requirements. Many options are available for this unit, often above your original specification.

Retrofit Circuit Breaker Type AK Ratings
Maximum System Voltage kV 3.3
Rated Power Frequency Withstand kV 10
Basic Impulse Level kVp 40
Normal Rated Current A 400
Short Circuit Breaking Current kArms 10
Mechanical Endurance Performance >10,000 Operations

Type AH Vacuum Circuit Breaker Retrofit

Utilising many parts from the original truck, including the original frame, contacts and interlock mechanism, the Type AH replacement circuit breaker fits perfectly into your existing cubicle with only minimal alterations to the existing front door. All current carrying parts are fully refurbished and re-plated. The unit is completely re-wired to your specific requirements. We also offer full cubicle refurbishment including CT and protection upgrade specific to your requirements either on site or factory finished units. A full installation and commissioning service is always available.

Retrofit Circuit Breaker Type AH Ratings
Maximum System Voltage kV 3.3
Rated power Frequency Withstand kV 10
Basic Impulse Level kVp 40
Normal Rated Current A 630 to 1600
Short-Time Current kA 3secs. 26.3
Peak Making Current kAp 67
Mechanical Endurance Performance >10,000 Operations
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P&B

P&B is a leading UK innovator of electrical protection, safety and control technologies.

Our specialist expertise and unrivalled experience is relied upon in heavy industries throughout the world to ensure the highest levels of safety and performance.

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