The ZW2-2×27.5 outdoor vacuum circuit breaker is single-phase, bipolar (mono-polar), high-voltage switchgear. It is equipped with vacuum interrupter and uses vacuum silicone grease as external insulator. This product is exclusively designed for splitting/integrating loads and breaking fault current in electrified railway’s AT power supply system or direct power supply system. It can be used where frequent operation is required.
Features of the ZW2-2*27.5/27.5 Outdoor Vacuum Circuit Breaker
1. VBI spring operating mechanism has complete function and a lifespan of up to 30,000 times.
2. Simple mechanical drive system with bipolar open-close mechanical linkage
3. Provide manual and electric power storage and closing-opening operations, which gives much convenience for emergency repairs.
4. Small cross beam design
5. Both the cross beam and machine housing are IP54 rated.
6. Beams and legs can undergo painting or surface treatment if needed. This results in higher corrosion resistance in rigorous working conditions.
7. Altitude: 3000m, Ambient temperature: -40℃~﹢45℃
8. Non-standard products can be designed and optimized upon request.
9. Max. rated current: 2500A, Rated short-circuit breaking current: 31.5kA, Rated short-circuit breaking capacity: 50 times
| Rated voltage | 27.5KV |
| Rated current | 2500A |
| Short-circuit breaking current | 31.5kA |
| Short-circuit breaking capacity | 50 times |
| Insulation level | 140/325 |
| Mechanical life | 10000 or 30000 times |
| Altitude | 4000 m |
| Temperature | -40 ℃ - +40 ℃ |
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