ZN63(VSG)-12 Vacuum Circuit Breaker The ZN63(VSG)-12 is a high-performance indoor vacuum circuit breaker designed for medium-voltage applications, primarily in the 12kV power distribution and industrial systems. It integrates advanced vacuum interruption technology with a reliable spring-operated mechanism, ensuring safe and efficient switching, protection, and control of electrical networks. Key Features 1. Vacuum Interruption Technology The breaker employs a vacuum interrupter as the arc-quenching medium, which offers superior dielectric strength and rapid arc extinction. This design ensures minimal contact erosion, long service life, and maintenance-free operation. 2. Rated Parameters - Rated Voltage: 12kV - Rated Current: Up to 3150A (depending on model) - Short-Circuit Breaking Capacity: Typically 25kA–40kA - Mechanical Life: Over 10,000 operations 3. Compact and Robust Design The ZN63(VSG)-12 features a modular, space-saving structure suitable for switchgear panels such as fixed or withdrawable configurations. Its insulated housing enhances safety and reduces the risk of phase-to-phase faults. 4. Spring-Operated Mechanism Equipped with a high-energy spring mechanism, the breaker ensures fast and reliable opening/closing operations. The mechanism can be manually or electrically operated (motor-charged) and supports remote control via automation systems. 5. Safety and Protection - Integrated protective relays for overcurrent, short-circuit, and earth fault protection. - Mechanical interlocks prevent incorrect operations. - Clear position indicators for breaker status (ON/OFF/Test). 6. Environmental Adaptability The breaker operates effectively in harsh conditions, with a wide temperature range (-15°C to +40°C) and high resistance to humidity, dust, and pollution. Applications The ZN63(VSG)-12 is widely used in: - Power substations - Industrial plants - Renewable energy systems - Mining and infrastructure projects Advantages - High Reliability: Minimal maintenance due to vacuum technology. - Fast Operation: Spring mechanism ensures quick fault clearance. - Flexibility: Compatible with various switchgear designs. In summary, the ZN63(VSG)-12 vacuum circuit breaker combines cutting-edge technology with rugged construction, making it a preferred choice for modern medium-voltage power systems.