Side-mounted indoor AC high voltage vacuum circuit breaker VS1

VS1 side-mounted vacuum circuit breaker is an indoor AC high-voltage switchgear, suitable for three-phase power systems with a rated voltage of 12kV and a frequency of 50Hz. It is used as a protection and control appliance. Due to the special advantages of vacuum circuit breakers, it is particularly suitable for places where frequent operation under rated current or multiple short-circuit current interruption is required.

VS1 side-mounted vacuum circuit breaker adopts fixed installation and is mainly used for fixed switch cabinets. The circuit breaker can be used alone or in ring network power supply, box-type transformer or various non-standard power supply systems.

This circuit breaker complies with relevant domestic and international standards such as GB1984-2014, GB/T11022-1999, DL/T403-2001, IEC62271-100:2003, etc.

Usage environment
Model and meaning

Technical Parameter
Structural characteristics
Structural diagram
Configuration diagram

Technical Parameter

No.	Item		Unit	Data
1	Rated voltage		kV	12
2	Rated current		A	630	1250
3	Rated frequency		Hz	50
4	Rated insulation level	1min power frequency withstand voltage	kV	42 (phase to phase, to ground)/48 (break) effective value
		Lightning impulse withstand voltage		75 (phase to phase, to ground)/85 (break) peak value
5	Rated short-circuit breaking current		kA	20/25	31.5
6	4S rated short-circuit withstand current		kA	20/25	31.5
7	Rated peak withstand current		kA	50/63	80
8	Rated short-circuit closing current (peak value)		kA	50/63	80
9	Automatic re-closing operation sequence			O-0.3S-CO-180S-CO
10	Arc burning time		ms	≤15
11	Rated short-circuit breaking current breaking times		Times	30	30
12	Mechanical life		Times	20000
13	Contact opening distance		mm	11±1.5(See arc extinguishing chamber)
14	Contact over-travel		mm	3.5±0.5
15	Contact closing bounce time		ms	≤3
16	Three-phase opening and closing asynchronism		ms	≤2
17	Opening and closing		m/s	0.9-1.3
18	Closing speed		m/s	0.5-0.8
19	Opening time		ms	≤50
20	Closing time		ms	≤100
21	Main circuit resistance	Rated current: 630A	μΩ	≤50
		Rated current: 1250A		≤45
22	Phase center distance		mm	210±2

Structural characteristics

Structural diagram

图片5.png

Configuration diagram

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Side-mounted indoor AC high voltage vacuum circuit breaker VS1

Usage environment

Model and meaning