VS1-24 630A 25KA Vacuum Circuit Breaker is an indoor equipment for rated voltage 24kV, three-phase AC 50Hz. It is suitable for protecting and controlling electrical equipment in industrial and mining enterprises, power plants, and substations. This type of circuit breaker conforms to national standards and IEC standards, with performance levels reaching M2-E2-C2.

The circuit breaker features composite insulated cylinder, spring energy storage operation, and screw propulsion. It is characterized by its compact size and reliable operation. Additionally, it can be easily adapted to switchgear, meeting the "Five Prevention" requirements of switchgear.

Product Specifications

Specification Sheet

No.	Name	Unit	Data
1	Rated Voltage	kV	24
2	Rated Frequency	Hz	50/60
3	Rated Current	A	630/1250/1600/2000/2500/3150/4000
4	Rated Power Frequency Withstand Voltage	kV	65
5	Rated Lightning Impulse Withstand Voltage	kV	125
6	Rated Short-Circuit Breaking Current	kA	25/31.5/40
7	Rated Short-Circuit Making Current (Peak)	kA	63/80/100
8	Rated Withstand Current (Peak)	kA	63/80/100
9	Rated Duration of Short-Circuit	s	4
10	Operating Cycles at Rated Short-Circuit Breaking Current	Cycles	E2
11	Mechanical Endurance	Times	10000
12	Standard Operating Sequence	-	O-0.3s-CO-180s-CO O-180s-CO-180s-CO
13	Allowable Wear Thickness of Contact	mm	≤3

Mechanical Characteristics

No.	Name	Unit	Data
1	Clearance between Moved and Fixed Contact	mm	12±1
2	Contact Overtravel	mm	3.5±0.5
3	Average Closing Speed	m/s	0.7±0.2
4	Average Opening Speed (Average Speed of First Opening at 6mm)	m/s	1.2±0.3
5	Rated Contact Pressure	N	3100±200N(25kA/31.5kA) 4800±300N(40kA)
6	Closing Time	ms	35～70
7	Opening Time	ms	20～50
8	Contact Bouncing Duration at Closing Operation	ms	≤3
9	No-Simultaneity of Closing/Opening Operations of 3-Phase	ms	≤2

Product Advantages

VS1-24 630A 25KA Vacuum Circuit Breaker has many advantages:

Performance of the circuit breaker

E2-C2-M2

Stability and reliability

It adopts the most mature frame-integrated spring operating mechanism, with over 20 years of market usage experience, ensuring safety, reliability, and high market recognition.

Excellent insulation performance

The main conductive circuit adopts APG high-strength epoxy resin composite insulated cylinder, which exceeds the IEC standard in terms of insulation performance.

Wide range of applications

It is suitable for 24kV distribution systems, and can be used in 10kV and all environments below 4500 meters altitude, covering operating temperature from -40°C to 40°C.