Spring operated circuit breaker LW8-40.5

spring operated circuit breaker
spring operated circuit breaker
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spring operated
Electrical characteristics
high-voltage, AC, three-phase
Operating mode
Other characteristics

2,000 A


40.5 kV


LW8-40.5 Type Outdoor AC HV SF6 Circuit Breaker is a kind of outdoor HV electrical equipment, three-phase, AC 50Hz. it is used not only for control and protection for 35kV power transmission and distribution system, but also for connecting circuit breaker and opening and closing capacitor bank, as well as for measurement and protection when it is equipped with current transformer. This circuit breaker is equipped with CT14 type spring operating mechanism. And it is conformed to the requirements of the standard of GB1984-89 《AC HV Circuit Breaker》 and IEC56 《HV AC Circuit Breaker》. 1. Excellent breaking performance, short arcing time, long electrical endurance. It can continuously break 20 times of 31.5kA without maintenance and free of replacing SF6gas. 2. Reliable insulation, it can withstand 40.5kV/10min under the zero gas pressure. 3. High mechanical reliability, strong closing capacity, frequent operation. 4. It will not reignite, when opening and closing the capacitor bank with the current of 400A. 5. It will not reignite, when cutting the long-line of 25km or 50km. 6. Simple structure, small volume, long free-maintenance period.


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