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VS1-12P/630-20 Embedded Pole Indoor VCB – 12kV, 630A, 20kA

The VS1-12P/630-20 is an industrial-grade embedded pole indoor vacuum circuit breaker engineered for 12kV/630A/20kA applications. Utilizing advanced APG process epoxy casting, this solid insulation VCB offers exceptional resistance to external moisture, dust, and contamination. It is highly ideal for bulk procurement by engineering contractors requiring maintenance-free, highly durable solutions for KYN28 switchgear.
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Procure the VS1-12P/630-20 embedded pole indoor VCB directly from a certified China manufacturer. This model is the advanced solid insulation version of the standard VS1-12, specifically designed for 12kV, 630A, and 20kA power distribution requirements. Our factory provides competitive wholesale pricing, ensuring distributors and engineering contractors receive industrial-grade equipment built to withstand severe environmental challenges where conventional insulated breakers easily fail.

Core Applications

This embedded pole VCB fundamentally solves environmental endurance issues, making it the optimal choice for coastal regions, high-humidity environments, high-altitude locations, and areas with severe industrial pollution.

Key Advantages

  • Solid Insulation Technology: Features an advanced APG process epoxy casting that fully encapsulates the vacuum interrupter and primary circuit into a solid pole, achieving complete isolation from moisture and dust.

  • Maintenance-Free Operation: The completely sealed design eliminates environmental impacts on insulation performance, ensuring a truly maintenance-free operational lifespan.

  • Enhanced Energy Efficiency: Engineered for reduced main circuit resistance, which results in a lower temperature rise and less energy loss during continuous operation.

  • Maximum Durability: Equipped with a robust spring operating mechanism that delivers an outstanding mechanical life of up to 20,000 operations.

Technical Specifications

  • Model: VS1-12P/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

  • Rated insulation level (1min power frequency withstand): 42 kV

  • Rated insulation level (lightning impulse withstand): 75 kV

  • Mechanical life: 20,000 times

  • Mounting options: Withdrawable (handcart) or fixed type

  • Switchgear compatibility: KYN28

  • Standards: IEC 62271-100, GB/T 1984

Submit a B2B inquiry today to request the latest wholesale pricing, exact MOQ, and comprehensive technical datasheet directly from our factory.

Installation CAD dimensions, withdrawable chassis, and solid insulation embedded pole details of VS1-12P vacuum circuit breaker

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