The VEP-M series circuit breaker is a newly developed product in the VEP family by Xiamen Huadian Switchgear Co., Ltd., built on the company’s years of expertise in circuit breaker manufacturing. It integrates the design expertise of product experts from both China and Germany. The highly reliable operating mechanism adopts an integrated design, which greatly enhances output stability and maintenance efficiency. The application of new solid insulation technology ensures that the solid-embedded pole is completely maintenance-free throughout its entire service life, representing the world’s leading level in the design and manufacturing of vacuum circuit breakers today.
Rated Voltage: 12 kV
Rated Insulation Level (Unit: kV)
Auxiliary Circuit Power Frequency Withstand Voltage: 2 kV1min Power Frequency Withstand Voltage: 42 kVLightning Impulse Withstand Voltage (Peak): 75 kV

Rated Frequency: 50 Hz
Rated Current (Unit: A)
630A, 1250A, 1600A, 2000A, 2500A, 3150A, 4000A*

Rated Short-Circuit Breaking Current (Unit: kA)
20 kA, 25 kA, 31.5 kA, 40 kA

Rated Short-Time Withstand Current (Unit: kA)
20 kA, 25 kA, 31.5 kA, 40 kA

Rated Short-Circuit Making Current (Peak, Unit: kA)
50 kA, 63 kA, 80 kA, 100 kA

Rated Peak Withstand Current (Unit: kA)
50 kA, 63 kA, 80 kA, 100 kA

Rated Short-Circuit Current Duration: 4 s
Notes:
For forced air cooling conditions. Phase-to-phase voltage shall be applied in matching switch cabinets or under equivalent conditions such as switchgear cabinets.