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VCB 25KA 1250A Indoor Circuit Breaker With Embedded Pole

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VCB 25KA 1250A Indoor Circuit Breaker With Embedded Pole

Brand Name : KNKONG

Model Number : VS1-12

Certification : CB,ISO,IEC

Place of Origin : China

MOQ : 1

Payment Terms : L/C, T/T, Western Union

Supply Ability : 1000 Unit per month

Delivery Time : 15 working days

Packaging Details : Standard export packaging

Voltage : 12KV 24KV

Current : 630A 1250A 1600A 2000A

Breaking current : 25KA

Type : Fixed type

Standard : GB,IEC,ISO

Manufactory : KNKONG-ELECTRIC

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VS1-12KV 1250A indoor VCB 25KA with embedded pole
Voltage: 12KV 24KV
Current: 630A 1250A 2000A
Breaking current: 20KA
Type: Fixed


Product overview
The VS1-12 series embedded vacuum circuit breaker produced by KNKONG-ELECTRIC is used for 12kV, 24KV three-phase AC 50Hz/60Hz indoor switchgear, it is the best protection and control unit for industrial and mining enterprises and substation equipment. The spring operating mechanism of the circuit breaker is a modular independent frame design, which is often used in KYN28-12 (24) fixed switchgear. These circuit breakers can be either fixed installation or can be used with a trolley when using the withdrawable version.
Technical Parameters

No.ItemUnitParameter
1Rated voltageKV12
2Rated frequencyHz50/60
3


Rated insulation level

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

KV

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)

4



Rated current

A

63063012501600
1250125016002000
20002500
25003150
4000
5Rated short-circuit breaking current

KA

202531.540
6Rated short-time withstand current202531.540
7Rated short-circuit marking current506380100
8Rated peak withstand current506380100
9Rated duration of short-circuit s4
10Rated operating sequence O-0.3s-O/C-180s-O/C
11Breaking times of rated short-circuit currentTimes30/20 times(40KA)
12Mechanical enduranceOps20000
13Rated single capacitor bank breaking current

A

630
14Rated back-to-back capacitor bank breaking current400
15Double-earth fault breaking current27.4
16Allowable maximum contact erosion

mm

3
17Clearance between open contacts10±1
18Over stroke3.5±0.5
19Non-simultaneity of 3-phase opening and closing

ms

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

m/s

1.1±0.2
22Average making speed0.8±0.2
23Making time

ms

≤100
24Breaking time≤50

25


Resistance of each phase main circuit

μ Ω

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

27

Rated operating voltageRated operating voltage(V)AC/DC

V

24*110220
Scope of normal operation voltageOpening:65%-120% rated voltage, in case the voltage is lower than 30% rated voltage, opening operation is not allowed
28Rated voltage of energy storage motorVAC110/220,DC110/220
29Energy storage timeS≤15


VCB 25KA 1250A Indoor Circuit Breaker With Embedded Pole



















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1250A Indoor Circuit Breaker

      

25KA Indoor Circuit Breaker

      

Embedded Pole 12KV Circuit Breaker

      
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