Reliable Safe 3 Phase Circuit Breaker High Mechanical Service Life Maximize Output

Brand Name:Comking
Certification:Type Test Report
Model Number:CKVB-12/GD
Minimum Order Quantity:1set
Delivery Time:10-15 work days
Payment Terms:L/C, T/T, Western Union
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Verified Supplier
Location: Zhuhai Guangdong China
Address: No.6, Futian Road, Xiangzhou,Zhuhai,China 519000
Supplier`s last login times: within 43 hours
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Product Details

1. Withdrawable circuit breaker CKVB-12/GD


2. Technical Data


DescriptionUnitParameter
Rated voltagekV12
Short-time withstand voltagekV42
Lighting impulse withstand voltagekV75
Rated frequencyHz50
Rated currentA630125016002000,25003150,4000
Pole centre distancemm150210150210275210275275275
Rated short-circuit breaking currentkA2531.52531.52531.52531.5404031.54031.54031.54040
Rated short-circuit making currentkA6380638063806380100100801008010080100100
Short-time withstand current(4s)kA2531.52531.52531.52531.5404031.54031.54031.54040
Rated peak withstand currentkA6380638063806380100100801008010080100100
Operating sequenceOpening-0.3s –closing opening-180s –closing opening
Opening timems20~50
Arc timems≤15
Closing timems30~70
Average closing speedm/s0.5~0.8
Average opening speedm/s0.9~1.2
Bounce time for contact’s closingms≤2
Asynchronous time for contact’s closing / openingms≤2
Allowable accumulated wearing thickness of moving/fixing contactmm3

3. Working Condition

3.1 Ambient air temperature: -25℃~+40℃


3.2 Ambient humidity:

---- relative average daily humidity: ≤95%

---- relative average daily water vapor pressure: ≤2.2kPa

---- relative average monthly humidity: ≤90%

---- relative average monthly water vapor pressure: ≤1.8kPa


3.3 Altitude: ≤1000m


3.4 Earthquake intensity: ≤magnitude 8


3.5 Ambient air doesn’t obviously pollute by dust, smoke, corrosive or combustible gas, vapors or salt spray.

(Exceeding above working condition is available as customized product)


4. Standard

---- GB1984-2003

---- IEC60056-2001

---- GB/T16927-1997

---- GB/T 4473-2008

---- DL/T403-2000

---- JB/T3855-2008



China Reliable Safe 3 Phase Circuit Breaker High Mechanical Service Life Maximize Output supplier

Reliable Safe 3 Phase Circuit Breaker High Mechanical Service Life Maximize Output

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