ZW32B-12 series column type outdoor high-voltage vacuum circuit breakerDetailed product description：

ZW32B-12 series column outdoor high-voltage vacuum circuit breaker is an outdoor high-voltage switchgear with three-phase AC 50Hz and rated voltage of 12KV. Suitable for breaking and closing load current, overload current, and short-circuit current of urban or rural distribution systems.
The circuit breaker is a brand new compact design. Fully enclosed structure, unique arc extinguishing chamber packaging technology, good sealing performance, moisture-proof, anti condensation, suitable for high temperature and humid areas. The ZW32B-12G circuit breaker isolation switch combination is composed of two main parts: ZW32B circuit breaker isolation switch.

Main technical parameters of ZW32B-12 series column outdoor high-voltage vacuum circuit breaker

serial number	parameter name		unit	ZW32B-12 /T400-12.5	ZW32B-12 /T630-16	ZW32B-12 /T630-20
one	rated voltage		KV	twelve
two	rated current		A	four hundred	six hundred and thirty	six hundred and thirty
three	Rated short-circuit breaking current		KA	twelve point five	sixteen	twenty
four	Rated short-circuit closing current (peak)			thirty-one point five	forty	fifty
five	Rated peak withstand current			thirty-one point five	forty	fifty
six	Rated short-time withstand current			twelve point five	sixteen	twenty
seven	Rated short-circuit duration		S	four
eight	Rated Absolute Edge level	1-minute power frequency withstand voltage	KV	Interphase, ground 42, fracture 48
		Lightning impulse withstand voltage (peak value)		Interphase, ground 72, fracture 75
nine	Rated operating sequence			Fen-0.3S-180S-Fen (electric mechanism)
ten	Rated short-circuit current breaking times		time	thirty
eleven	mechanical life			ten thousand
twelve	Rated operating voltage (switching coil)			A/DC220、110、DC24
thirteen	Allowable cumulative thickness of wear for dynamic and static contacts		V	three
fourteen	Rated current of overcurrent release device		mm	five
fifteen	Current ratio of current transformer		A	200/5, 400/5, 600/5
sixteen	Contact opening distance		mm	9±1
seventeen	Contact overtravel			2±0.5
eighteen	Average opening speed		m/s	1.2±0.3
nineteen	Average closing speed			0.6±0.2
twenty	Opening time		ms	20~40
twenty-one	closing time			30~60
twenty-two	Closing bounce time			≤2
twenty-three	Synchronization of three-phase opening and closing
twenty-four	DC resistance of each phase circuit		μΩ	≤80
twenty-five	energy storage motor	rated voltage	V	DC/220、110、24
		rated power	W	forty
		Energy storage time	S	≤8
twenty-six	quality		kg	eighty-five

ZW32B-12 series column outdoor high-voltage vacuum circuit breaker, external installation dimensions

Note: The current transformer ratio can be selected according to customer requirements