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Vacuum Interrupter & Pole Design
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Vacuum Interrupter
The vacuum interrupter is the core switching element inside the pole, providing current switching and fault interruption in a sealed vacuum environment.
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Embedded Pole Design
Vacuum interrupters and primary conductive parts are encapsulated in epoxy resin as an integrated pole structure, providing enhanced insulation reliability and environmental resistance.
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Withdrawable Configuration
Mounted on a withdrawable chassis with service, test and disconnected positions, allowing the circuit breaker to be integrated into 40.5 kV metal-clad switchgear with the required mechanical and electrical interlocking.
Technical Specifications
| Parameter | Specification |
| Rated Voltage | 40.5 kV |
| Rated Frequency | 50 / 60 Hz |
| Rated Current | Up to 2500 A |
| Rated Short-Circuit Breaking Current | Up to 31.5 kA |
| Rated Short-Time Withstand Current | Up to 31.5 kA |
| Power-Frequency Withstand Voltage | 95 kV |
| Lightning Impulse Withstand Voltage | 185 kV |
| Operating Sequence | According to Product Configuration / Project Requirements |
| Mechanical Endurance | Up to 10,000 operations |
| Installation | Withdrawable |
| Applicable Standard | IEC 62271-100 |
Note: Available ratings and performance parameters depend on product configuration and project requirements.
Standards, Testing & Documentation
IEC-Oriented Design
Designed with reference to IEC 62271-100 and applicable project requirements.
Factory Routine Testing
Electrical, mechanical, operating and applicable interlocking checks are carried out before shipment according to product configuration.
Project Documentation
Technical datasheets, outline drawings, wiring diagrams and test records can be provided for project review.
Discuss Your 40.5 kV Vacuum Circuit Breaker Requirements
Share your rated current, breaking capacity, switchgear configuration and interface requirements with our engineering team.
MV & LV Equipment Manufacturer · Wenzhou, China
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