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Circuit-breaker - All Manufacturers - eTesters.com Breaker Tester. Chongqing Gold Mechanical & Electrical Equipment Co.,Ltd. 1) Closing and opening time measurement of 12 channels2) Max difference of closing or opening time measurement of three phases3) C-O and O-C time measurement4) Rated operation sequence test5) Bounce time and frequency measurement of breaker closing6) Circuit breaker closing and opening speed …

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