Ningbo Suntech Power Machinery Tools Co., Ltd.

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Indoor Embedded 12KV Vacuum AC Circuit Breaker

Indoor Embedded 12KV Vacuum AC Circuit Breaker

  • Indoor Embedded 12KV Vacuum AC Circuit Breaker
  • Indoor Embedded 12KV Vacuum AC Circuit Breaker
  • Indoor Embedded 12KV Vacuum AC Circuit Breaker
Indoor Embedded 12KV Vacuum AC Circuit Breaker
Product Details:
Place of Origin: Ningbo,China
Brand Name: Suntech
Certification: ISO
Model Number: VF(R)-12
Payment & Shipping Terms:
Minimum Order Quantity: 1 PCS
Price: Get newest price
Packaging Details: Exported cartons or cases
Delivery Time: 30 days after Payment
Payment Terms: L/C , T/T, Western Union
Supply Ability: 20000 pcs per month
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Detailed Product Description
Type: Vacuum Circuit Breaker Poles Number: 3
Ambient Temperature: -40°C-+40°C Altitude: ≤1000m
High Light:

Indoor Embedded AC Circuit Breaker


12KV AC Circuit Breaker


Indoor Embedded Vacuum Circuit Breaker

New Generation Indoor Embedded High Voltage Vacuum AC Circuit Breaker


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.


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

ransformer 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.


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


Indoor Embedded 12KV Vacuum AC Circuit Breaker 0

Contact Details
Ningbo Suntech Power Machinery Tools Co.,Ltd.

Contact Person: Peter

Tel: 86-13958364836

Send your inquiry directly to us
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