We can provide indoor vacuum circuit breakers which applicable for indoor switchgear in three phase AC power system, 50Hz or 60Hz, rated voltage up to 24kV , and serve as protection & control unit for power equipments of power grid, industrial and mining enterprises. The circuit breakers are manufactured under IEC 62271-100, with assembled or solid sealed pole design.

Technical Data
N	Name			Unit	Data
1	Rated voltage			kV	12, 24
2	Rated frequency			Hz	50, or 60
3	Rated current			A	630	1250,1600
						2000,2500
					1250	1250,1600
4	Rated insulation level	1min P.F. Withstand voltage	Between phases, phase to ground	kV	42, 65
			Between gaps		42, 65
		Rated lightening impulse withstand voltage	Between phases, phase to ground		75, 125
			Between gaps		85, 125
5	Rated 4s short-time withstand current			kA	20	25	31.5
6	Rated short-circuit breaking current				20	25	31.5
7	Rated peak withstand current				50	63	80
8	Rated short-circuit making current				50	63	80
9	Rated short-circuit duration			s	4
10	Rated outphase earth fault breaking current			kA	17.4	21.7	27.4
11	Rated operating sequence			O-0.3s-CO-180s-CO
12	Rated operating voltage			V	DC(AC)220/110
13	Electrical life			time	E2 degreeb
14	Mechanical life				20000