ZW32-12(G)□/M series permanent magnet outdoor vacuum circuit breaker is an outdoor power distribution equipment with rated voltage of 12kV and three-phase AC 50Hz. It is mainly used to break and close the load current, overload current and short circuit current in the power system.

It is suitable for protection and control in power distribution systems of substations and industrial and mining enterprises, and places where rural power grids are frequently operated.

The circuit breaker has the characteristics of small size, light weight, anti-condensation and maintenance-free, and can adapt to harsh weather conditions and dirty environments.

This type of product is operated by a permanent magnet operating mechanism; since the permanent magnet operating mechanism is provided with a holding force by the permanent magnet, the switch is kept at the opening and closing position, the number of mechanical parts is small, and the mechanism transmission chain is short, thereby greatly improving the reliability of the switch. Sex and institutional life.

No.	Item		Unint	Data
1	Rated frequency		Hz	50
2	Rated voltage		kV	12
3	Rated current		A	630/1250
4	Rated short-time power frequency withstand voltage	Interphase,to earth(wet)	kV/min	42/1
		Interphase,to earth(dry)		48/1
		Break(dry)		34/1
		Secondary circuit to earth		2/1
5	Rated lightning impulse withstand voltage	Interphase,to earth	kV	75
		Break		85
6	Rated short-circuit breaking current		kA	20/25
7	Rated short-circuit making current(peak)			50/63
8	Rated short-time withstand current and duration		kA/s	(20/25)/4
9	Rated peak withstand current		kA	50/63
10	Rated short-circuit breaking current breaking times		Times	30
11	Rated operating voltage and rated voltage of auxiliary circuit		V	AC/DC220、DC48、DC24
12	Main circuit resistance	Without isolation	μΩ	≤80
		with isolation		≤120
13	Mechanical life		Times	20000
Note:if altitude over than 1000m, the rated insulation level should be modify as appropriate