WVS-12 (B) Series Sleeve-Type Indoor High-Voltage Vacuum Circuit Breaker has passed the following tests to ensure the safe operation.
型系列套筒式户内高压真空断路器已经通过了以下的各种试验，可以确保其安全运行。
CT19BN type spring operation structure for operating the indoor 40.5 KV vacuum circuit breaker with.
CT 19bn型弹簧操动机构可供操作户内40.5 KV真空断路器之用。
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