New Generation Indoor 25KA High Voltage Vacuum AC Circuit Breaker

10.0 Pieces
New Generation Indoor 25KA High Voltage Vacuum AC Circuit Breaker
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Model Number: VF(R)-12
Breaking Capacity: 25KA
Rated Voltage: 12KV
Rated Current: 630A
Product Name: Vacuum Circuit Breaker
MOQ: 10
Altitude: ≤1000m
Ambient Temperature: -40°C-+40°C
Poles Number: 3
Type: Vacuum Circuit Breaker
BCD Curve: BCD
Basic Infomation
Model Number: VF(R)-12
Payment & Shipping Terms
Packaging Details: Wooden Box or Crate
Supply Ability: 2000 Piece/Pieces per Month
Product Description
Product Description

VF(R)-12 indoor embedded high-voltage alternating-current vacuum load switch-fuse combination (“vacuum load switch" )is a new generation vacuum switching equipment developed based on unique design ideas to meet the market demand. It is widely used for indoor armored air-insulated switch cabinets. In normal conditions, it can operate within its technical parameters in any grid of the specified voltage level safely and stably.

Technical Parameter

Item Unit Reference value


Vacuum load



Vacuum load




High breaking

capacity vacuum



High breaking

capacity vacuum



Rated voltage kV 12 12 12 12
Rated insulation level Lightning impuse withstand voltage kV 75 75 75 75
1min power-frequency withstand voltage kV 42 42 42 42
Rated frequency Hz 50/60 50/60 50/60 50/60
Rated current A 630 125(fuse) 630 125(fuse)

Rated short-circuit

breaking current

kA - 50(fuse) 25 25

Rated short- circuit

making current (peak value)

kA 50 - 63 -

Rated short-time

withstand current

kA 20 - 25 -

Rated withstand current

(peak value)

kA 50 - 63 -

Rated breaking current of

cable during charge

A 16 - - -

Rated breaking current of

no-load transformer

kVA 1250 - 1250 -

Rated breaking

take-over current

A - 3150 - 3150

Breaking times of

the rated short-circuit current

Mechanical life M2 level M2 level M2 level M2 level
Weight kg 125

Transformer capacity and fuse selection

1.The fuse can cut off a large short-circuit current in less than 10 ms and its breaking current can be up to 50KA. Thus, it can protect the transformer most efectively.

2.In terms of match between the transformer and the fuse (Table 1), the potential surge current of the fuse must be considered. Thus, fusing current of the fuse must be 1.6 times of the rated value; designer must consider possible fluctuations of other parameters of the grid and reserve margins for them. If a fuse is selected for high-voltage motor protection, designer must consider frequency of start of the high-voltage motor because frequent starts of the high-voltage motor will result in the fuse's failure when timely cooling is not available.

Fuse selection

Primary voltage of

the transformer(kV)

Capacity of

the transformer(kVA)

Model of the fuse

Rated current

of the fuse(A)

Model for

the domestic market

Model for

international market

6.6 200 XRNT-10 12kV BDGHC 31.5
250 40
300/315 50
400 12kV BDGHC 63
500 80
630 90


1.GB 3804-2004 High-voltage load alternating-current switches for rated voltage above 3.6 kV and less than 40.5 kV

2.GB 16926-2009 High-voltage load alternating- current switch-fuse combinations

Operating conditions

1. Ambient temperature: - 40℃-+40℃ (below 35℃ within 24 hours)

2. Relative humidity:≤95% (daily average) or≤90% (monthly average)

3.Altitude: ≤1000m

Company Information

Our Services

Packaging & Shipping


Q: Can we get a sample for reference?
A: Yes, as long as the goods are conventional type, and you will be charged sample cost plus related shipping cost. Once you place an order to us, we can return or deduct the sample cost to you.

Q: How to solve the quality problems after sales?
A: Take photos of the quality problems and send to us for our checking and confirming, we will make a satisfied solution for you within 3 days.

Q: What is the lead time?
A: The lead time depends on the quantities ordered, generally within 25-35days upon the receipt of advance payment.

Q: What is your terms of payment ?
A: We accept West Union, T/T, irrevocable L/C at sight. Prefer T/T 30% deposit before production, the balance against copy of B/L.

Q: Can you print our brand on the product?
A: Yes, of course, we also do OEM to print client’s brand on the product.

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Contact Person : Joyce Wang
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