VS1 (ZN63) Indoor High Voltage Vacuum Circuit Breaker

1. Product Overview

This 12kV indoor vacuum circuit breaker is a core protection device for high voltage power distribution systems. Designed with advanced vacuum arc extinguishing technology, the VS1 (ZN63) vacuum circuit breaker delivers reliable short-circuit breaking and overload protection. Built with high-quality silicon steel sheets and heat-resistant coils, it ensures stable performance and a long service life in industrial and commercial power environments. It supports both fixed and trolley-type installation, offering flexible solutions to meet diverse project requirements.

2. Application Scenarios

This high voltage vacuum circuit breaker is widely used in power plants, substations, industrial facilities, and commercial buildings. As a key component in high voltage switchgear, it protects transformers, motors, and distribution lines from electrical faults. The VS1 (ZN63) vacuum circuit breaker is ideal for environments requiring high safety, low maintenance, and consistent reliability, such as power distribution rooms and manufacturing plants.

3. Technical Parameters

The VS1 (ZN63) vacuum circuit breaker features standardized specifications for universal compatibility:

Rated Voltage: 12kV
Rated Current: 630A / 1250A
Rated Frequency: 50Hz
Short-Circuit Breaking Capacity: 20kA / 25kA / 31.5kA (optional)
Installation Type: Fixed / Withdrawable Trolley Type
Operation Mode: Electric / Manual Operation

All parameters comply with international standards, ensuring seamless integration with most 12kV power systems worldwide.

4. Product Dimensions & Structure

This high voltage vacuum circuit breaker has a compact and robust design. Its thickened metal housing provides strong protection against mechanical damage and corrosion. The insulated columns are made of A-grade rubber, offering excellent wear resistance and anti-fouling performance. circuit breaker is engineered to fit standard 12kV switchgear cabinets, making installation and replacement convenient and efficient.

5.Installation & Operation Instructions

Before installation, inspect the equipment to confirm it is in good condition and matches system specifications. Install the device in a dry, well-ventilated environment free from corrosive gases. Follow the user manual to complete all electrical and mechanical connections. The VS1 (ZN63) vacuum circuit breaker supports both electric and manual operation modes. For routine maintenance, inspect the unit regularly to ensure all indicators and mechanisms function properly.