ZW8-12 Outdoor High Voltage Vacuum Circuit BreakerDetailed product description：

1 Overview
ZW8-12 outdoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is used in three-phase power systems with AC 50Hz-12kV. It can switch on and off the load current, overload current, and short-circuit fault current of the circuit. It is a control and protection device for indoor power grids. When the circuit breaker is combined with an isolation switch (hereinafter referred to as a combination circuit breaker), it can be used as a section switch.
2. Environmental conditions for use
a. Environmental temperature -40 ℃ to+40 ℃;
b. The altitude shall not exceed 2000mm, and any altitude above 2000mm shall be negotiated with the user;
c. The wind pressure shall not exceed 700Pa (equivalent to a wind speed of 34m/s);
d. The daily average relative humidity should not exceed 95%, and the monthly average should not exceed 90%
e. Air pollution level III;
f. The surrounding air should not be significantly polluted by corrosive or flammable gases;
g. No frequent vigorous exercise;
h. As an insulating medium, silicone rubber should comply with the requirements of GB655386 for the intended use.

Main technical parameters of ZW8-12 outdoor high-voltage vacuum circuit breaker
3.1 Rated Parameters

serial number	Project			unit	Parameters
one	rated voltage			KV	twelve
two	rated current			A	six hundred and thirty
three	rated frequency			HZ	fifty
four	Power frequency withstand voltage			KV	forty-two
five	Lightning impulse voltage (peak value)			KV	seventy-five
six	Rated short-circuit breaking current			KA	twelve point five	sixteen	twenty
seven	Rated short-circuit closing current (peak)			KA	thirty-one point five	forty	fifty
eight	Rated short-time withstand current			KA	twelve point five	sixteen	twenty
nine	Rated peak withstand current			KA	thirty-one point five	forty	fifty
ten	Rated operating sequence				Split -0.3S - Split -180S Split
eleven	Rated short-circuit current breaking times			time	thirty
twelve	mechanical life			time	ten thousand
thirteen	Allowable cumulative thickness of wear for moving contacts			mm	three
fourteen	Rated operating voltage Equipped with CT type spring operating mechanism		closing coil	V	DC or AC 110, 220
			trip coil
fifteen	Rated working current of overcurrent trip coil			A	five
sixteen	energy storage motor	Customized voltage		V	DC or AC 110, 220
		power		W	≤200
seventeen	weight			Kg	one hundred and fifty

3.2 Mechanical characteristic parameters

Appearance and installation dimensions of 4ZW8-12 outdoor high-voltage vacuum circuit breaker

ZW8-12 Outdoor High Voltage Vacuum Circuit Breaker