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Source the VS1-12/630-20 indoor withdrawable vacuum circuit breaker directly from a certified China manufacturer. This model is recognized as the most economic withdrawable vacuum circuit breaker for 12kV indoor switchgear. Our factory provides bulk orders with competitive wholesale pricing, ensuring you get industrial-grade reliability for your engineering or distribution needs.
This OEM vacuum circuit breaker is suitable for residential power distribution, small industrial plants, and auxiliary transformers. It is highly ideal for frequent operation environments.
Durability: Offers a mechanical life of 20,000 operations.
Design: Features a compact structure with reliable interlocking systems.
Mounting: Convenient handcart type (withdrawable) for easy maintenance and replacement.
Compliance: Fully complies with IEC 62271-100 and GB/T 1984 standards.
Model: VS1-12/630-20
Rated voltage: 12 kV
Rated current: 630 A
Rated short-circuit breaking current: 20 kA
Rated peak withstand current: 50 kA
Rated short-time withstand current (4s): 20 kA
Insulation level (1min power frequency withstand): 42 kV (phase/ground), 48 kV (isolating distance)
Insulation level (lightning impulse withstand): 75 kV (phase/ground), 85 kV (isolating distance)
Operating mechanism: Spring energy storage (manual / electrical)
Request a quote today to get the best B2B factory price and MOQ details for your wholesale order.
Feature | VS1-12/630-20 | Standard 12kV VCB |
Rated Current | 630 A | Varies (e.g., 400A) |
Short-circuit Breaking | 20 kA | Standard 16kA |
Mounting Type | Handcart (Withdrawable) | Fixed |
Verify the 12kV switchgear compatibility and ensure power is disconnected.
Align the handcart chassis with the guide rails of the switchgear compartment.
Push the VCB into the test position to check reliable interlocking mechanisms.
Engage the spring energy storage (manual/electrical) before racking into the service position.
