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Mingde Electrical (Shanghai) Co., Ltd.

Circuit Breaker, Breaker, Vacuum Circuit Breaker manufacturer / supplier in China, offering 17.5kv-1250A Indoor Embedded Structure Vmv Vacuum Circuit Breakers, 17.5kv -2500A Vmd Indoor Three Phase Vcb in Switchgear, Contact Box Md/150 and so on.

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Supplier Homepage Product Circuit Breaker 17.5kv-1250A Indoor Embedded Structure Vmv Vacuum Circuit Breakers

17.5kv-1250A Indoor Embedded Structure Vmv Vacuum Circuit Breakers

Purchase Qty.:
1-99 100+
FOB Unit Price: US $1,680 US $1,180
Purchase Qty. (Pieces) FOB Unit Price
1-99 US $1,680
100+ US $1,180
Get Latest Price
Production Capacity: 22000PCS/Per Year Circuit Breaker
Transport Package: Wooden Case Circuit Breaker
Payment Terms: L/C, T/T, Western Union, Paypal

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Basic Info
  • Model NO.: VMV
  • Operation: Manual & Electric Circuit Breaker
  • Arc-extinguishing Medium: Vacuum
  • Structure: Vcb Circuit Breaker
  • Type: Circuit Breaker
  • Certification: ISO9001-2000, Ohsas 180001
  • Rated Current: 12500A Circuit Breaker
  • mechanical Life: 60000times Circuit Breaker
  • Specification: SGS, TUV
  • HS Code: 8535210000
  • Breaking Capacity: Middle& High Voltage Circuit Breaker
  • Speed: Normal Type Circuit Breaker
  • Installation: Fixed & Withdrawalable Circuit Breaker
  • Poles Number: 3
  • Function: Overcurrent Protection
  • Rated Voltage: 17.5kv Circuit Breaker
  • Rated Frequency: 50Hz Circuit Breaker
  • Trademark: Mingde Circuit Breaker
  • Origin: Zhejiang Ningbo Circuit Breaker
Product Description
17.5kv-1250A Indoor Embedded Structure Vmv Vacuum Circuit Breakers 

Product Overview

1. A brand new series of products, wider use in different fields and environment
2. Mechanical life up to 60,000 times
3. Expandable to smart circuit breaker

Operation Mechanism

VMV Modularized Operation Mechanism
VMV Modularized Operation Mechanism (with smart unit)
   Modularized design of the operation mechanism is the highlights of VMV circuit breaker. With opening module and closing module in one part, the independent operation mechanism makes the standardized production and maintenance much easier.

Gear Driving System

    We improved VMV circuit breakers' driving system, using the gear driving system instead of the traditional chain wheel driving system. The circuit breaker operation will run more smoothly with a longer mechanical life.

Opening Oil Buffer

   The application of high-performance oil buffer can greatly reduce moving contact's over-swing and rebound during the circuit breakers' opening process. In this way, it avoids the reduction of mechanical life when vacuum interrupter is over-fatigue, resulted from contact's over-swing.

Main Specifications and Technical Parameters 

Rated voltagekV17.5
1 min power frequency withstand voltagekV50
Lightning impulse withstand voltagekV95
Rated frequencyHz50
Rated currentA1250
Rated short-time withstand currentkA20,25,31.5
Rated peak withstand currentkA50,63,80
Rated short-circuit breaking currentkA20,25,31.5
Rated short-circuit closing currentkA50,63,80
Rated short-circuit durationS4
Contact over-travel mm3.5±0.5
Clearance between open contactsmm9±1/11±1
Average opening speedm/s1.1±0.2
Average closing speedm/s0.6±0.2
Opening time ms35-60
Closing timems20-45
Rated operation sequence O-0.3s-CO-180s-CO(<40kA)/
Mechanical lifecycles10000

External Dimension

17.5kv-1250A Indoor Embedded Structure Vmv Vacuum Circuit Breakers

VMV2-7.2, 12, 17.5-pole center distance 210mm
No.Rated Voltage(kV)Rated current(A)Short-circuit breaking current(kA)h1(mm)h2(mm)h(mm)A(mm)B(mm)

17.5kv-1250A Indoor Embedded Structure Vmv Vacuum Circuit Breakers
VMV2-7.2, 12,17.5pole center distance 275mm
No.Rated Voltage(kV)Rated current(A)Short-circuit breaking current(kA)h1(mm)h2(mm)h(mm)A(mm)B(mm)
Normal Operating environment condition

a) Normal operating environment condition
Highest temperature:                  +40ºC
Lowest temperature:                   -15ºC
b) Environment humidity
Daily mean relative humidity:        ≤95%
Monthly mean relative humidity:     ≤90%
Daily mean saturated vapor pressure:   ≤2.2×10-3 MPa
Monthly mean saturated vapor pressure:  ≤1.8×10-3 MPa
c) Altitude: below 1000m area;
d) Earthquake intensity: no more than 8 degree;
e) The product shall be away from weep, fire and explosion, chemical corrosion and 
strenuous vibration place.

Special operating condition

Please consult with manufacturer on manufacturing technology when operating environment is the climatic environment with high altitude, high humidity and great temperature change or other special environment condition.


17.5kv-1250A Indoor Embedded Structure Vmv Vacuum Circuit Breakers
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