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

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Zhuhai Comking Electric Co.,Ltd.

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Name: Reliable Safe 3 Phase Circuit Breaker High Mechanical Service Life Maximize Output
Brand: Comking
Price: 1 USD

Brand Name : Comking

Model Number : CKVB-12/GD

Certification : Type Test Report

Place of Origin : China

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

Packaging Details : Wooden Packing

MOQ : 1set

Price : To be discussed later

Delivery Time : 10-15 work days

Rated Voltage : 12kV

Rated Current : 630A,1250A,1600A,2000A,2500A,3150A,4000A

Rated Frequency : 50Hz

Type : Indoor

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1. Withdrawable circuit breaker CKVB-12/GD

2. Technical Data

Description	Unit	Parameter
Rated voltage	kV	12
Short-time withstand voltage	kV	42
Lighting impulse withstand voltage	kV	75
Rated frequency	Hz	50
Rated current	A	630				1250						1600				2000,2500		3150,4000
Pole centre distance	mm	150		210		150		210			275	210		275		275		275
Rated short-circuit breaking current	kA	25	31.5	25	31.5	25	31.5	25	31.5	40	40	31.5	40	31.5	40	31.5	40	40
Rated short-circuit making current	kA	63	80	63	80	63	80	63	80	100	100	80	100	80	100	80	100	100
Short-time withstand current(4s)	kA	25	31.5	25	31.5	25	31.5	25	31.5	40	40	31.5	40	31.5	40	31.5	40	40
Rated peak withstand current	kA	63	80	63	80	63	80	63	80	100	100	80	100	80	100	80	100	100
Operating sequence		Opening-0.3s –closing opening-180s –closing opening
Opening time	ms	20～50
Arc time	ms	≤15
Closing time	ms	30～70
Average closing speed	m/s	0.5～0.8
Average opening speed	m/s	0.9～1.2
Bounce time for contact’s closing	ms	≤2
Asynchronous time for contact’s closing / opening	ms	≤2
Allowable accumulated wearing thickness of moving/fixing contact	mm	3

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

Product Tags:

vcb circuit breaker

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