ZN101-12 Vacuum Circuit BreakerDetailed product description：

Product Features of ZN101-12 Vacuum Circuit Breaker

1. The peak withstand current reaches 100kA.
2. For this circuit breaker, all mechanical travel curves are within the envelope, and the distance from the reference mechanical travel curve does not exceed ± 2mm.
3. Mechanical lifespan: The overall mechanical lifespan of this circuit breaker reaches 60000 cycles. The mechanical characteristics before and after the lifespan meet the requirements of the new standard. The mechanical lifespan of the arc extinguishing chamber is greater than 30000 times.
4. Temperature rise test: Passed the type test at 1.1 times the rated current, which is 1375A.
5. Manual disconnection: The ZNB type permanent magnet vacuum circuit breaker developed by the factory has successfully undergone a type test of manual disconnection with a rated current of 1250A and continuous operation for 10 times at the Electric Power Research Institute. This experiment is rarely conducted in China.
6. EMC (Electromagnetic Compatibility) test: Conducted the most rigorous level of testing according to the new standards. Under various interference conditions, the electronic controller works normally, and the circuit breaker has no abnormal phenomena such as misoperation or refusal to operate.

Technical parameters of ZN101-12 vacuum circuit breaker

serial number	name		unit	parameter
one	rated voltage		kV	twelve
two	Rated insulation level	1min power frequency withstand voltage (effective value)	kV	forty-two
		Lightning impulse withstand voltage (peak value)		seventy-five
three	rated frequency		Hz	fifty
four	Interphase center distance		mm	150，170，210
five	rated current		A	one thousand two hundred and fifty
six	Rated short-circuit breaking current		kA	thirty-one point five
seven	Rated short-time withstand current			thirty-one point five
eight	Rated short-circuit closing current (peak)			one hundred
nine	Rated peak withstand current			one hundred
ten	DC component			≥40%
eleven	Rated cable charging opening and closing current		A	25 (C2 level)
twelve	Rated operating sequence			Split -0.3s - Split -180s - Split - Split
thirteen	Rated short-circuit current duration		s	four
fourteen	Circuit breaker electrical life			E2 level
fifteen	mechanical life	Circuit breaker (mechanism)	time	sixty thousand
		Arc extinguishing chamber		thirty thousand
sixteen	Allowable cumulative thickness of wear for dynamic and static contacts		mm	three
seventeen	Rated current for manual emergency disconnection		A	one thousand two hundred and fifty
eighteen	EMC electromagnetic compatibility			GB/Tll022 related regulations