Manufacturing thermal protectors and switches since 2010.

Customized KSD9700 thermal overload protector,Temperature Controller Thermostat manufacturers From China | Haichuan

250VAC/6A 115VAC/10A 24VDC/12A 12VDC/15A
Plastic Case size(mm)
Metal Case
Lead wire
35-125°C 3266 22# white 70mm ≥130°C 3135 20# red 70mm

KSD9700 thermal overload protector,Temperature Controller Thermostat  compared with similar products on the market,

 it has incomparable outstanding advantages in terms of performance, quality, appearance, etc., and enjoys a good reputation in the market.

Haichuan summarizes the defects of past KSD9700 products Temperature Controller Thermostat, and continuously improves them. 

The specifications of KSD9700 thermal overload protector,Temperature Controller Thermostat can be customized according to your needs.

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Product Details
Company Profile
Product Introduction
 KSD9700 serial universal and enhanced protectors with large metal casing are composed of the thermal conductive metal casing, bimetallic parts welded with silver alloy contact point, conductive bracket, insulation fixation stand, fixed contact strip and heat resistance cable. In case of abnormal operation, along with the increase of the environment temperature to the set value, the bimetallic parts perform quick action, open the contact point, and disconnect the circuit. When the device is cooled to the temperature for safe operation, the contact point will automatically closes and recover normal operation.
Product Features
Thermostat / KSD9700 thermal protector /  KSD9700 temperature protector

HCET series KSD9700 thermostat’s Principle and structure

2.1.Switch type: normally closed, normally opened.

2.2.Operating Voltage / Current: AC250V / 5A; AC125V / 8A

2.3.Operating Temperature: 40~150℃ (one step for every 5°C)

2.4.Standard Tolerance: +-3°C/ +-5°C/ +-7°C

HECT series KSD9700 thermal protector's Specification

HCET thermal overload protector,Temperature Controller Thermostat 

2.5.Reset temperature: operating temperature decrease by 15-45°C

2.6.Contact Closure resistance: ≤50mΩ

2.7.Insulation resistance: ≥100mΩ

2.8.Electric strength: AC1500V/1min free from phenomena of break down and flashover.

2.9.Service life: 10000 times 

HCET temperature protector’s Application

BW series is applicable to chargeable battery, ballast, massager, motor,transformer, electric tools, heat electric appliance and instrument etc.





Can we get some samples ? How can I get the samples?
We can provide 5-10 pcs thermal protector samples for free, but the overseas shipping cost will in your side. Pls let us know your specific contact information and specificateion, if you want to have free samples from us.
How about your products quality ?
We pays great attention to the quality control ,advanced testing equipment  and Professional Quality Engineer, multiple  testing process  to ensure that the product 100%qualified delivery .
How to test the opening & reset temperatures?
Testing be done in the oven that the precision of constant temp is ±1℃. When testing, the thermocouple or thermometer should be place nearest to samples. During temperature rising ,when the temperature reaches 10℃ less than rated temperature, the temperature rising rate should be less than 0.5℃per minute and the testing current should be no more than 0.01A.
How about the shipment and delivery time?
The true delivery time depend on the quantity and products. Here need 5-7 days to produce for normal orders. We prefer to use international express like FedEx/UPS/TNT/DHL,but the shipment can be chose by our clients.
What certificates you get ?
We have get 5 certificates --CQC : GB/T14536 , ISO/TS 16949 , EN 60730 , UL60730-1 and some products design rights.
Our services
Oem or odm are acceptable.
We accept small order/trial order for customer to check whether the products is suitable for the market.
Will be available online almot in 24 hours service for your esteemed company.
We are glad to hear from you soon and to start a business relationship with your esteem company.

Basic Information
  • Year Established
  • Business Type
    Manufacturing Industry
  • Country / Region
  • Main Industry
    Power Supplies and Circuit Protection
  • Main Products
    Temperature switch, temperature control switch, thermal protector, circuit breaker, motor protector, etc.
  • Enterprise Legal Person
  • Total Employees
    101~200 people
  • Annual Output Value
  • Export Market
    Chinese Mainland,European Union,Middle East,Eastern Europe,Latin America,Hong Kong and Macao and Taiwan,Japan,Southeast Asia,America,Others
  • Cooperated Customers
    Nidec, BOSCH, TTI, LG, Welling, Nissan, SAIC Chase, Cadillac, Land Rover, Toyota, Dongfeng, Yutong, BYD, Nio etc.
Company Profile
Nanjing Haichuan Electronic Co., Ltd. located in Luhe Economic Development Zone, Nanjing city, Jiangsu province, China, it was established on August 5th, 2010. It is a high-quality thermal protector, temperature switch, over-current protector manufacturers, vigorously introduce Austria, the United States and other places technology and more than 20 advanced equipment, especially committed to the automotive field of high-reliable Protector R & D and Manufacturing! The company has passed the ISO/TS16949 quality management system certification and has a number of independent Patents. Its products have passed the international safety certification of many countries such as UL, TUV, CQC, PSE, etc. Products are widely used in glass elevator motor, wiper motor, skylight motor, car water tank, car heating pad, white household appliances and other occasions that need reliable and safe protection, is one of the most complete specifications in the field of automotive electrical protectors, the company has become an excellent supplier to the cooperation units of many mainframes manufacturers in China. More than 60% of the company's products are exported to the United States, Canada, the European Union, Brazil, Taiwan and other countries and regions. With the company's mature technical strength and sound management system, to provide customers with cost-effective products and services.
Issue by:UL
Issue by:TUV Rheinland
Issue by:China Quality Certification Center
Issue by:NSF
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