LW3-12 12kV Outdoor SF6 Gas Circuit Breaker is a widely used pole-mounted high voltage switchgear for 12kV outdoor power distribution network. It uses SF6 gas for insulation and arc extinction, featuring compact size, light weight, maintenance-free and stable performance. Perfect for overhead line sectional control, loop switching and overload & short circuit protection.
LW3-12 I II III type outdoor SF6 circuit breaker is a new type outdoor high voltage electrical equipment which takes SF6 gas as its arc extinguishing and insulation medium. There are three types of operating mechanism-I type manual energy storage spring operating mechanism, II type motor energy storage spring operating mechanism and III type DC electromagnetic operating mechanism.
Compared with other 12kV outdoor circuit breaker, LW3-12 outdoor SF6 circuit breaker is simple in
structure with good arc extinguishing and insulation performance.
With LW3-12 SF6 circuit breaker, users can reduce cost, eliminate danger of fire and improve the reliability of electric system.
RatedVoltage (kV) |
Rated Current(A) |
Rated Short-circuitBreaking Current (kA) |
Rated Short-circuit Closing Current (kA) |
Rated Peak Withstand Current (kA) |
Rated Short-circuit Withstand Current (kA) |
Rated Short-circuit Duration Time (S) |
Rated Short-circuit Current Breaking Times (times) |
Weight(kg) |
12 |
400 630 1250 |
6.3 8 12.5 16 |
16 20 31.5 |
16 20 31.5 |
6.3 8 12.5 16 |
4 |
30 |
I type 122 II type 130 III type 132 |

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