Products

Dongfa Intelligent is a professional 40.5kV Indoor High Voltage Vacuum Circuit Breaker manufacturer supplying overseas buyers with factory-direct pricing. This indoor VCB offers 1250/1600/2000A, 25/31.5kA, ≤80ms opening time, and 10,000 operations. With capacitor bank switching capability and AC/DC 110V/220V control options, it suits switchgear retrofit and new projects. Request a quote today.

Dongfa Intelligent supports project sourcing and technical selection of the 24kV Indoor Vacuum Circuit Breaker for indoor medium-voltage power distribution systems. The product is designed for 24kV, 50Hz applications and provides multiple rated current configurations for different system loads. Its technical parameters include 20kA, 25kA and 31.5kA short-circuit breaking current, defined insulation levels for phase-to-phase, phase-to-earth and vacuum interrupter, and 10,000-operation mechanical life. It can be evaluated for power distribution, power plants, mining and industrial applications according to project requirements. Model：3(VS1)-24 Key Specifications：24kV · 50Hz · 630–3150A · 20–31.5kA · 10,000 Operations

12kV Indoor Side-Mounted Vacuum Circuit Breaker from Dongfa Intelligent, a specialized manufacturer, supports project procurement, technical selection, and customized production for 12kV indoor medium-voltage power distribution systems. It has a rated current of 1250A and provides 20kA, 25kA, and 31.5kA short-circuit breaking current options. The product supports AC/DC 110V and 220V control voltages, with 42kV power frequency withstand voltage, 75kV lightning impulse withstand voltage, and a rated mechanical life of 1000 cycles. It is suitable for power distribution, power plants, mines, industrial enterprises, and corresponding medium-voltage switchgear systems.

Dongfa Intelligent provides project sourcing and technical selection of the 12kV Indoor Embedded Pole Vacuum Circuit Breaker, designed for compact and reliable indoor medium-voltage power distribution systems. The ZN63(VS1)-12 integrates the vacuum interrupter into an embedded pole structure to provide stable insulation and a more compact switching assembly. With rated current options from 630A to 4000A, short-circuit breaking capacity up to 40kA, and flexible switchgear integration, it is suitable for utilities, power plants, mining and industrial applications. Model: ZN63(VS1)-12 Parameters: 12kV |630A–4000A |20/25/31.5/40kA

Dongfa Intelligent supports sourcing and technical selection of the 12kV Indoor Permanent Magnet Vacuum Circuit Breaker for indoor medium-voltage power distribution systems. The ZN63A(VS1)-12 uses a bistable permanent magnet operating mechanism that reduces mechanical components and shortens the transmission chain compared with conventional spring mechanisms. With up to 20,000 mechanical operations, short-circuit breaking capacity up to 40kA, and multiple rated-current configurations, it is designed for utilities, power plants, mining and industrial applications. Model: ZN63A(VS1)-12 Key Specifications: 12kV | 630A–2500A | 20 / 25 / 31.5 / 40kA

Dongfa Intelligent supports sourcing, technical selection and project procurement of 12kV Indoor Vacuum Circuit Breaker solutions. The ZN63(VS1)-12 is designed for indoor medium-voltage power distribution, with rated current from 630A to 4000A and short-circuit breaking capacity up to 40kA. Fixed and withdrawable configurations are available for different switchgear layouts, while 10,000-operation mechanical life supports long-term switching reliability. Suitable for utilities, power plants, mining and industrial applications. Model: ZN63(VS1)-12 Breaking Capacity: 20 / 25 / 31.5 / 40kA