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P&B’s range of English Electric air breaker replacements have been designed for total reliability. Utilising the ABB VD4 vacuum circuit breaker, our English Electric retrofits are relied upon for achieving trouble-free performance over many thousands of maintenance free operations.
Utilising many parts from the original truck, including the original frame, pokers, cluster pots and interlock mechanism, the Type E3 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 and all cluster springs are replaced. The unit is completely re-wired to your specific requirements. Many options including fused versions are already designed and available for this unit sometimes above your original specification.
Retrofit Circuit Breaker Type E3 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 Circuit Breaking Current | kA | up 31.5 rms (150MVA) |
Short-Time Current | kA 3secs. | 31.5 |
Peak Making Current | kAp | 80 |
Mechanical Endurance Performance | >10,000 Operations |
Utilising many parts from the original truck, including the original frame moulding and interlock mechanism, the Type E7 and E8 replacement circuit breakers fit perfectly into your existing cubicle with no alterations to the existing unit. All current carrying parts are fully refurbished and re-plated and all cluster rings are replaced with our improved type tested design.
The unit is completely re-wired to your specific requirements. We have some units in stock so don’t hesitate to call and discuss your requirements.
Retrofit Circuit Breaker Type E7 and E8 Ratings | ||
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Maximum System Voltage | kV | 11 |
Rated Power Frequency Withstand | kV | 28 |
Basic Impulse Level | kVp | 75 |
Normal Rated Current | A | 1600, 2000, 2500 and 3000 |
Short Circuit Breaking Current | kA | up 53 rms (1000MVA) |
Short-Time Current | kA 3secs. | 53 |
Peak Making Current | kAp | 137 |
Mechanical Endurance Performance | >10,000 Operations |
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.