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Procure the VS1-12/1250-31.5 indoor withdrawable vacuum circuit breaker directly from a certified China manufacturer. Designed to handle most medium-voltage distribution applications, this model provides exceptional reliability for bulk B2B procurement. It acts as a versatile workhorse for industrial plants, commercial buildings, and substation feeders, ensuring stable power distribution across complex infrastructures.
High Reliability: Equipped with a modular spring mechanism that ensures low maintenance and high operational reliability.
Switchgear Compatibility: Fully interchangeable with KYN28 switchgear, making installation, maintenance, and replacement highly efficient for engineering contractors and system integrators.
Extended Lifespan: Delivers an exceptional mechanical life of 20,000 operations, significantly reducing long-term replacement cycles and maintenance costs.
Compliance: Meets stringent international standards, fully certified under IEC 62271-100 and GB/T 1984.
Model: VS1-12/1250-31.5
Rated voltage: 12 kV
Rated current: 1250 A
Rated short-circuit breaking current: 31.5 kA
Rated peak withstand current: 80 kA
Rated short-time withstand current (4s): 31.5 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)
Mounting: Handcart type (withdrawable)
Standards: IEC 62271-100, GB/T 1984
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