VS1+ series indoor high-voltage vacuum circuit breakerDetailed product description：

The VS1-12 indoor high-voltage vacuum circuit breaker is an indoor switchgear for three-phase AC 50Hz rated voltage 12kV power systems. It serves as a protection and control unit for power grid equipment and industrial and mining enterprise power equipment. Suitable for frequent operation at rated working current, or places where short-circuit current is broken multiple times.
The circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body, which can be used as a fixed installation unit or equipped with a dedicated propulsion mechanism to form a handcart unit.

VS1+series indoor high-voltage vacuum circuit breaker operating environment

Surrounding air temperature: upper limit+40 ℃, lower limit -15 ℃;
B Altitude: ≤ 100m (if altitude needs to be increased, the rated insulation level will be correspondingly increased);
C amplitude: earthquake magnitude does not exceed 8 degrees;
The daily average relative humidity of the air is not greater than 95%, and the monthly average is not greater than 90%
A place without fire, explosion hazards, serious pollution, chemical corrosion, and severe vibration.

Main technical parameters of VS1+series indoor high-voltage vacuum circuit breaker

serial number	name		name	data
one	rated voltage		kV	twelve
two	rated frequency		Hz	fifty
three	Rated insulation level	1-minute power frequency withstand voltage	kv	Ground/phase 42/48
		Lightning impulse withstand voltage (peak value)		Ground/phase to phase 75/85
four	Rated short-circuit breaking current		kA	twenty	twenty-five	thirty-one point five	forty
five	rated current		A	six hundred and thirty	six hundred and thirty	1250 1600	1250 1600
				one thousand two hundred and fifty	one thousand two hundred and fifty	2000 2500	2000 2500
six	Rated short-time withstand current (effective value)		kA	twenty	twenty-five	thirty-one point five	forty
seven	Rated peak withstand current (peak)			fifty	sixty-three	eighty	one hundred
eight	Rated short-circuit closing current (peak)			fifty	sixty-three	eighty	one hundred
nine	Rated short-circuit current duration		S	four
ten	mechanical life		time	twenty thousand
eleven	Secondary circuit power frequency withstand voltage (1min)		V	two thousand
twelve	Rated operating sequence			Division-t-and-t1-in-for-t1
Note: 20kA, 25kA, 31.5kA t=0.3s t1=180s; 40kA t=180s t1=180s

VS1+series indoor high-voltage vacuum circuit breaker