Gold Member Since 2015
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Mingde Electrical (Shanghai) Co., Ltd.

Manual Type Operating Mechanism, Motor Type Operating Mechanism, Overcurrent Protection manufacturer / supplier in China, offering Outdoor High Voltage CTB Operating Mechanism, 17.5kv -2500A Vmd Indoor Three Phase Vcb in Switchgear, Contact Box Md/150 and so on.

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Outdoor High Voltage CTB Operating Mechanism

Purchase Qty.:
1-99 100+
FOB Unit Price: US $200 US $180
Purchase Qty. (Pieces) FOB Unit Price
1-99 US $200
100+ US $180
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Production Capacity: 22000PCS/Per Year
Transport Package: Standard Package
Payment Terms: L/C, T/T, Western Union, Paypal

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Basic Info
  • Model NO.: CTB Spring Operating Mechanism
  • Operation: Manual&Motor
  • Arc-extinguishing Medium: Vacuum
  • Structure: Vcb
  • Type: Operating Mechanism
  • Certification: ISO9001-2000, CE
  • Rated Working Current: 5/3/3.78/2.3/1.77A
  • Place of Origin: Zhenjiang, China(Mainland)
  • Mechanical Life: 10000 Times
  • Specification: SGS, TUV
  • HS Code: 8538900000
  • Breaking Capacity: High Voltage Circuit Breakers
  • Speed: Normal Type Circuit Breaker
  • Installation: Fixed
  • Poles Number: 3
  • Function: Overcurrent Protection
  • Rated Working Voltage: 110V and 220V
  • Brand Name: Mingde
  • Opening Working Voltage Range: 85%-110% Rated Working Voltage
  • Trademark: Mingde
  • Origin: Zhejiang Ningbo
Product Description
Outdoor High Voltage CTB Operating Mechanism

1. Overview

1.1 Model No. & Name

CTB spring operating mechanism have two types, manual type operating mechanism and motor type operating mechanism.

1.2 Its main functions and working conditions

This operating mechanism will be used in ZW32-12 outdoor high voltage vacuum circuit breaker ( designed by Beijing Electrical Science Academy ) and other power nearby outdoor or indoor high voltage vacuum circuit breaker, its performances can meet requires of GB1984AC High Voltage Circuit Breaker and the product's Technical Conditions; Manual type operating mechanism holds functions of manual energy-storage,manual closing/opening,overcurrent protection . Motor type operating mechanism functions including motor or manual energy-storage,electromagnet or manual closing/opening,overcurrent protection ,etc . To make overcurrent-protection -purposed contorrer have surge current, time-delay amd fast-breaking fuctions, this product is suitable under following working conditions :

A.Surrounding air temperature up limit is +40ºC,down litmit is -45ºC.
B.Elevation is not higher than 2000m, wind speed not over 35m/s.
C. Related humidity , day average is not over 95%, month average is not 90% (+25ºC). Water vapor pressure, day average is not over 2.2X103Mpa,month average is not over 1.8X103MPa.
D. The using venue should be no fire accedent,  explosion danger, serious dirtiness and severe shake.

1.3 Operating mechanism's weight : CTB manual type: 8.6kg

CTB motor type: 12kg

2. Structure and working principle

2.1  CTB operating mechanism ( manual type)'s structure is as Pic1 
     CTB( motor type)'s structure is as Pic2.

Outdoor High Voltage CTB Operating Mechanism


Outdoor High Voltage CTB Operating Mechanism


Rende Power Technology Group

    With two wholly-owned holding subsidiaries of Ningbo Mingde Electrical Science&Technology Co., Ltd. and Mingde Electrical(Shanghai) Co., Ltd., Rende Power Technology Group is a high-tech enterprise that specializes in providing high-end circuit breaker technical solutions and core equipment manufacturing for the power industry.

   Established in 2007, Ningbo Mingde Electrical Science&Technology Co.,Ltd. is a manufacturing base of the company which is primarily responsible for the research and development, manufacturing and logistics of all the products. Situated in Cixi of Ningbo city, south bank of Hangzhou Bay Sea-Crossing Bridge, Ningbo Mingde Electrical Science&Technology Co.,Ltd enjoys a beautiful natural scenery and humanistic landscape.

  Located in Jiading New City, known as "One hundred meters--a forest, One thousand meters--a lake", Mingde Electrical (Shanghai) Co., Ltd. is seated at Jiading District, the future political economic and cultural center of Shanghai. Mingde Electrical (Shanghai) Co., Ltd. is mainly responsible for the external contact and the sales of all the products and for providing integrated solutions and service for the customers in power industry.

  Up to now, the company has established a long-term strategic cooperation relationship with the domestic and international famous enterprises and universities and colleges, such as Siemens, Eton, Baoguang, Xi'an Jiaotong University and Chongqing University and so on. The company is equipped with the product design and manufacturing capacity of 18000 sets of VMD high-voltage vacuum circuit breakers, 12000 sets of VMV smart vacuum circuit breakers and 6000 sets of switchgear assembly.

  Company tenet: with the objective of the market demand and the criteria of customer satisfaction and the management philosophy of people-oriented and technological innovation, the company adheres to the quality tenet" high starting point, high standard and high demanding" to serve the clients with honesty. Our company will strive for the first-class manufacturing equipment, solid technical ability and scientific management system to win the recognition and high reputation in electric industry.

    Intelligence, Long operating lifetime, Large current and High current breaking --the technical developing goal of our company

    Leading technology, Stable property, Quality assurance, Energy Conservation and Environmental Protection--the unremitting pursuit of our company


Business Philosophy

     To be a professional enterprise in electrical industry, through pragmatic work with a high sense of responsibility to the customers, employees, industry and society!


  With the objective of the market demand and the criteria of customer satisfaction, we are committed to provide professional services to the electric systems.  We insist on the people-oriented concept and the spirit of innovation in technology, management and marketing. Adhering to the business philosophy of quality service, our company is dedicated to providing safe and reliable products as well as quality service, to create value for employees, shareholders and customers.

 Corporate Culture

 To be a professional and qualified server in global power industry

 Corporate mission:

 To maximize the benefits of shareholders, customers and employees

 Corporate value:

 Harmony, Dedication, Integrity and Win-win cooperation

 Market Achievements


Application to some Engineering Projects in domestic and foreign markets

VMV circuit breaker applied in Sinopec, Shanghai Branch.

 VMD3 vacuum circuit breaker applied in Ningbo Wanda Plaza.

 VMD3 applied in Rosneft, an oil company in Russia, through cooperation with the local switchgear manufacturer.

 VMD2 circuit breaker applied in GAZPROM, the largest gas company in Russia.

 Modularized circuit breaker applied in cement company from Saudi Arab.

12kv VS1 circuit breaker applied in residential area, Veken Taizi Bay, Ningbo city.

 VMD5 circuit breaker applied in Rizhao Steel, Shangdong province.

 VS1 circuit breaker applied in Beilun power plant, Ningbo city.

 VMD2 applied in Pingdingshan Coal Mining Group, Henan province.

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Outdoor High Voltage CTB Operating Mechanism

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