VSM-12/630A Permanent Magnet Indoor High-Voltage Vacuum Circuit Breaker

Principle

The ZN12-12/1250-31.5 indoor high-voltage vacuum circuit breaker is suitable for 12KV-35KV three-phase AC 50Hz power systems. The arc chamber of this circuit breaker is made of porcelain, utilizes longitudinal magnetic contacts, and features a compact design. The distribution of the diffused arc current during operation is uniform on the contacts, preventing localized melting. It also boasts a low arc energy voltage (20-200V) and a low current interruption value (4-15A), along with a highly reliable operating mechanism. This circuit breaker employs the DYT-1 type spring-energy storage mechanism, which can operate using either AC energy storage or DC operation, as well as manual operation. The circuit breaker is equipped with a special contact material, enhancing its arc-quenching ability and providing a long electrical lifespan.

Key Technical Parameters

Dimensions and installation size

Environmental Requirements

1. The main circuit utilizes composite insulation, offering a compact design that saves space and effectively protects the vacuum interrupter from impacts and collisions.

2. The vacuum interrupters are sourced from domestic manufacturers, while also capable of installing imported vacuum interrupters as per customer requirements.

3. Compatible with KYN28A-24 central cabinet.

4. Rated current: 630-3150A, rated short-circuit breaking current: 20kA-31.5kA; the product is equipped with full certification for model and usage.

5. Mechanical lifespan: 20,000 cycles.

6. No re-ignition observed during capacitor switching capacitor test.

7. Suits operation in highland areas with altitudes up to 4,500 meters and voltages up to 12KV.

Other models include: ZN12-12/1600-31.5, ZN12-12/2000-31.5, ZN12-12/630-20

Product Advantages

This circuit breaker features a simple structure, strong breaking capacity, long lifespan, complete operational functions without danger, and easy maintenance. It is suitable for control or protective switches in power generation plants, substation distribution systems, and especially for locations where important loads are frequently switched.