IEC standard outdoor medium voltage vacuum circuit breaker 35kV 40.5 kV
Key attributes
| Brand | ROCKWILL |
| Model NO. | IEC standard outdoor medium voltage vacuum circuit breaker 35kV 40.5 kV |
| Rated voltage | 40.5kV |
| Rated normal current | 2500A |
| Rated frequency | 50/60Hz |
| Series | RVB |
Product descriptions from the supplier
Description
Product Overview
Our IEC Standard Outdoor Medium Voltage Vacuum Circuit Breaker is a high‑reliability switching device designed for power distribution systems up to 40.5 kV, 2500 A, 26.3 kA. Equipped with a proven spring operating mechanism and a weather‑proof structure, it ensures stable performance in outdoor environments. The vacuum interrupters are installed inside hollow porcelain insulators, pressurized at 0.5 bar above atmospheric pressure with SF6/Nitrogen gas to effectively prevent condensation and ensure long‑term insulation performance.
Fully compliant with IEC standards, this breaker is widely used in utility distribution networks, substations, industrial and commercial power systems, and rural/urban grid projects worldwide. It is an ideal solution for global buyers, contractors, and power utilities seeking reliable, low‑maintenance outdoor vacuum circuit breakers.
Core Features
- Live tank design for stable outdoor operation and strong environmental adaptability
- Maintenance-free poles to reduce lifetime operating and maintenance costs
- IP54 protection degree for reliable performance in harsh outdoor conditions
- Fully compliant with IEC standards for global market acceptance and project compatibility
- Long service life with robust construction and high-quality components
- Upper and lower terminals with NEMA4 drilling for universal and convenient installation
- Spring operating mechanism housed in a weather-proof cabinet for stable and consistent operation
- Vacuum interrupters inside hollow porcelain insulators pressurized with SF6/Nitrogen at 0.5 bar above atmosphere to prevent condensation
- Sturdy extruded steel angle structure for strong, stable pole‑mounting and substation installation
Technical Highlights
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Rated voltage
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Up to 40.5 kV
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Rated current
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Up to 2500 A
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Short‑circuit breaking current
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26.3 kA
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Insulation
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Vacuum interrupters in porcelain housings
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Operating mechanism
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Spring type
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Protection class
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IP54
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Mounting structure
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Heavy‑duty extruded steel angle
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Terminal drilling
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NEMA4
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Applications
- Outdoor distribution substations
- Urban and rural power distribution networks
- Industrial and commercial power systems
- Utility power grid renovation and expansion
- Pole‑mounted and substation‑mounted applications worldwide
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