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25KA Breaking Fixed VCB Circuit Breaker 205mm Phase Spacing

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25KA Breaking Fixed VCB Circuit Breaker 205mm Phase Spacing

25KA Breaking Fixed VCB Circuit Breaker 205mm Phase Spacing
25KA Breaking Fixed VCB Circuit Breaker 205mm Phase Spacing

Large Image :  25KA Breaking Fixed VCB Circuit Breaker 205mm Phase Spacing

Product Details:
Place of Origin: China
Brand Name: KNKONG
Certification: CB,ISO,IEC
Model Number: VS1-12
Payment & Shipping Terms:
Minimum Order Quantity: 1
Packaging Details: Standard export packaging
Delivery Time: 15 working days
Payment Terms: L/C, T/T, Western Union
Supply Ability: 1000 Unit per month

25KA Breaking Fixed VCB Circuit Breaker 205mm Phase Spacing

Working Voltage: 12-24KV Working Current: Max 2000A
Breaking Current: Max 25KA Type: Fixed
Phase Spacing: 205-310 Brand: KNKONG-ELECTRIC
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25KA Breaking VCB Circuit Breaker


Fixed VCB Circuit Breaker


205mm Phase Spacing VCB Circuit Breaker

205mm Phase spacing 25KA breaking fixed vacuum circuit breaker VS1


Voltage: 12-24KV

Current: max 2000A

Breaking current: max 25KA

Type: Fixed

Phase spacing: 205-310mm


Product overview

The VS1 circuit breaker is independently developed by Knkong and adopts a modular mechanism. Compared with the traditional VS1 circuit breaker, it is easy to install, maintain, test and operate. It has higher operational stability, higher safety and longer service life. This product can meet the application needs of customers in 12kV and 24kV power transmission and distribution systems and is widely used to replace traditional European brands.


VS1-Series circuit breaker features high stability and high reliability

In terms of braking mechanisms, VS1 series vacuum circuit breakers have optimized transmission components. The modularization of the spring mechanism makes it easy to maintain, has short maintenance time for power failure, and strong versatility of parts. The colleague's vacuum interrupter has better compatibility and improved performance.


Normal service condition

Altitude ≤1000m
Ambient temperature Max +40℃
Min -15℃

Ambient humidity:

Maximum average humidity

24 hours ≤95%
1 month ≤90%
Maximum water vapor pressure 24 hours ≤2.2kpa
1 month ≤1.8kpa



Technical Parameters

No. Item Unit Parameter
1 Rated voltage KV 12
2 Rated frequency Hz 50/60


Rated insulation level

1min power frequency withstand voltage(r. m. s)



42(phase-to-phase, phase-to-earth)

48(across the isolating distance)

Lighting impulse withstand voltage (peak)

75(phase-to-phase, phase-to-earth)

85(across the isolating distance)






Rated current




630 630 1250 1600
1250 1250 1600 2000
    2000 2500
    2500 3150
5 Rated short-circuit breaking current



20 25 31.5 40
6 Rated short-time withstand current 20 25 31.5 40
7 Rated short-circuit marking current 50 63 80 100
8 Rated peak withstand current 50 63 80 100
9 Rated duration of short-circuit     s 4
10 Rated operating sequence   O-0.3s-O/C-180s-O/C
11 Breaking times of rated short-circuit current Times 30/20 times(40KA)
12 Mechanical endurance Ops 20000
13 Rated single capacitor bank breaking current



14 Rated back-to-back capacitor bank breaking current 400
15 Double-earth fault breaking current 27.4
16 Allowable maximum contact erosion



17 Clearance between open contacts 10±1
18 Over stroke 3.5±0.5
19 Non-simultaneity of 3-phase opening and closing



20 Bounce duration of contact closing ≤2
21 Average breaking speed (instant breaking 6mm)



22 Average making speed 0.8±0.2
23 Making time



24 Breaking time ≤50





Resistance of each phase main circuit


μ Ω

630A ≤50
1250A ≤45
1600A~2000A ≤35
≥2500A ≤25
26 Contact breaking bounce amplitude mm ≤2



Rated operating voltage Rated operating voltage(V)AC/DC



24* 110 220
Scope of normal operation voltage Opening:65%-120% rated voltage, in case the voltage is lower than 30% rated voltage, opening operation is not allowed
28 Rated voltage of energy storage motor V AC110/220, DC110/220
29 Energy storage time S ≤15





Contact Details
Knkong Electric Co.,Ltd

Contact Person: Antonio

Tel: +8613607680651

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