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12KV 1250A Indoor Type VCB Circuit Breaker 25KA With Embedded Pole

Name: 12KV 1250A Indoor Type VCB Circuit Breaker 25KA With Embedded Pole
Brand: KNKONG
Price: 1 USD

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Brand Name :	KNKONG
Model Number :	VS1-12
Certification :	CB,ISO,IEC
Price :
Payment Terms :	L/C, T/T, Western Union
Supply Ability :	1000 Unit per month
Delivery Time :	15 working days

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Product Details
Company Profile

12KV 1250A Indoor Type VCB Circuit Breaker 25KA With Embedded Pole

12KV 1250A Indoor type vacuum circuit breaker with embedded pole

Voltage: 12KV 24KV

Current: 630A 1250A 2000A

Breaking current: 20KA

Type: Fixed

Product overview

VS1-series embedded pole. The vacuum circuit breaker is used for 12kV, 24KV three-phase AC 50Hz/60Hz indoor switchgear, and it is the best protection and control unit for industrial and mining enterprises and substation equipment. The spring operating mechanism of VS1 series circuit breaker is modular and independent frame design, suitable for KYN28-12 (24) central and fixed switchgear. These circuit breakers can either be fixedly installed or assembled with a hand push.

The VS1 series circuit breaker is easy to install, maintain, test and operate due to its modular structure. Compared with traditional circuit breakers, VS1 runs more stable, safer and has a longer service life. VS1 can meet 12kV and 24kV power transmission and distribution applications in power, energy, petrochemical, metallurgy, manufacturing, transportation, construction, environmental protection and other industries.

Technical Parameters

No.	Item		Unit	Parameter
1	Rated voltage		KV	12
2	Rated frequency		Hz	50/60
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	630	630		1250		1600
				1250	1250		1600		2000
							2000		2500
							2500		3150
									4000
5	Rated short-circuit breaking current		KA	20	25		31.5		40
6	Rated short-time withstand current			20	25		31.5		40
7	Rated short-circuit marking current			50	63		80		100
8	Rated peak withstand current			50	63		80		100
9	Rated duration of short-circuit		s	4
10	Rated operating sequence			O-0.3s-O/C-180s-O/C
11	Breaking times of rated short-circuit current		Times	30/20 times(40KA)
12	Mechanical endurance		Ops	20000
13	Rated single capacitor bank breaking current		A	630
14	Rated back-to-back capacitor bank breaking current			400
15	Double-earth fault breaking current			27.4
16	Allowable maximum contact erosion		mm	3
17	Clearance between open contacts			10±1
18	Over stroke			3.5±0.5
19	Non-simultaneity of 3-phase opening and closing		ms	≤2
20	Bounce duration of contact closing			≤2
21	Average breaking speed (instant breaking 6mm)		m/s	1.1±0.2
22	Average making speed			0.8±0.2
23	Making time		ms	≤100
24	Breaking time			≤50
25	Resistance of each phase main circuit		μ Ω	630A			≤50
				1250A			≤45
				1600A~2000A			≤35
				≥2500A			≤25
26	Contact breaking bounce amplitude		mm	≤2
27	Rated operating voltage	Rated operating voltage(V)AC/DC	V	24*		110		220
		Scope of normal operation voltage		Opening:65%-120% rated voltage, in case the voltage is lower than 30% rated voltage, opening operation is not allowed
28	Rated voltage of energy storage motor		V	AC110/220,DC110/220
29	Energy storage time		S	≤15

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12KV 1250A Indoor Type VCB Circuit Breaker 25KA With Embedded Pole

12KV 1250A Indoor Type VCB Circuit Breaker 25KA With Embedded Pole

12KV 1250A Indoor Type VCB Circuit Breaker 25KA With Embedded Pole

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Knkong Electric Co., Ltd (Zhengzhou Knkong Mechanical And Electrical Co., Ltd)was established in 2012. A wholly-owned subsidiary of Henan Sanhe Electric Group. We are mainly responsible for overseas market exporting, electronic components, and technology import.

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