KSD301 thermostat


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KSD301 thermostat 2

Item:KSD301 thermostat

Short Description:bimetal reaction,auto-reset thermostar,plastic thermostat shell,fixed protector holder.
KSD301 thermostat ;1. normally open type and normally closed type; 2,Electrical Rating: 5A,10A,15A; 2.Action Temperature:5℃ -170℃(See below) .

This KSD301 thermostat is used either as temperature control and safety limit for household electric appliances and widely applicable for coffee maker, water heater, immersion heaters, electric cookers, icrowave ovens, automatic toasters, etc.It is wildly used for temperature control or protection for household electric appliances.

Place of origin: China , Sell to worldwide.

Order or Inquiry on “KSD301 thermostat 
Models & Details for “ KSD301 thermostat”


20℃ normally open
35℃ normally open
40℃ normally open
45℃ normally open
50℃ normally open
80℃ normally open
55℃ normally open
60℃ normally open
90℃ normally open
85℃ normally open
100℃ normally open

15℃ normally closed
70℃ normally closed
75℃ normally closed
35℃ normally closed
40℃ normally closed
45℃ normally closed
50℃ normally closed
55℃ normally closed
60℃ normally closed
70℃ normally closed
75℃ normally closed
80℃ normally closed
85℃ normally closed
90℃ normally closed
100℃ normally closed
… … More temperature degrees and types,please contact our email:

KSD301 thermostat 3

Normally closed type : the temperature control switch is in working condition (passage) , jumps off (disconnected) beyond the temperature control temperature, does not work ,such as electric kettle.
Normally open type : does not exceed the temperature control temperature is open circuit (not working state), exceeds the temperature Just start working!

KSD301 thermostat 4
ceramics type
KSD301 thermostat 5
Bakelite type

Bakelite type for 5A,10A,15A.
Ceramics type for 16A.

KSD301 is flat feet;KSD302 is bent feet.
KSD301 is flat feet;KSD302 is bent feet.


1,Rated current: . 5A,1OA ,15A
Rated voltage: 125V , 250V
2,temperature control switch: automatic reset and manual reset;
Automatic reset: normally open and normally closed
Terminal: 6.3mm with 4.8MM
3,disconnected temperature range: 45 °C ~ 180 °C , optional;
4 , disconnection temperature tolerance: ± ( 2 ~ 5 ) °C , optional;
5 , on-off temperature difference: 3 ~ 25 °C , special requirements, When ordering:
6 , Environmental temperature: Normal type: T150 °C ; High temperature type: T250 °C ; 7. Service life: under rated load, common type: > 35000 cycles; high temperature type: > 10000 cycles;
8. Normal electrical Intensity: AC 50Hz , 2000V , no breakdown or flashover in 1min ;
9. Contact resistance: < 50mΩ
10,Insulation resistance: > 100MΩ ;
11 , contact form: – normally closed or – normally open;
12 , enclosure protection grade: IP20 ;
13 grounding method: through the metal shell of the thermostat and the grounding metal parts of the device.

The working principle and characteristics
use the disc type bimetal as the temperature sensing element. When the temperature rises to a certain value, the disc jumps and the drive contact moves quickly; when the temperature drops to a certain value, the disc is reset, and the contact is also It then returns to its original state and achieves the purpose of switching the circuit. It has the characteristics of small size, light weight, no arcing, high reliability, long life and less interference to radio.

Application range:
Air conditioners, water dispensers, electric water bottles, rice cookers, disinfection cabinets, coffee pots, electric steamers, electric water heaters, electric heating equipment, electric welding machines, steam heaters and other electrical appliances.


1) When using contact temperature sensing , the metal cover should be close to the mounting surface of the controlled appliance.

2) non-deformable surface pressure of the cap when installed , so as not to affect performance.

3) In order to prevent leakage , the liquid should not be allowed to penetrate into the temperature controller during use , so as not to affect the electrical reliability.

4) This product is a bipolar wiring type . When used, follow the markings and connect correctly.

5) The product should be stored in a warehouse with a relative humidity of less than 90% and an ambient temperature of 40 °C below, which is ventilated, clean, dry and free of corrosive gases.

Buying guide to “KSD301 thermostat ”
  • The item  is available for retail and wholesale;
  • The place of origin is in China,when you buy one or two,please consider freight(by air or by sea) into the cost;
  • Accept bulk order with Container delivery;
  • Please contact us to email:
General Knowledge on “KSD301 thermostat ”

Structure and Application:
KSD301 series of products is a bimetal as a temperature sensor thermostat, electrical work, bimetal in a free state, the contact is closed / disconnected state, when the temperature reaches the operating temperature, the bimetallic heat Produce internal stress and rapid action, open / close contact, cut / turn on the circuit, which play a role in temperature control. When the appliance is cooled to a reset temperature, the contacts are automatically closed / opened and returned to normal operation. Widely used in household drinking fountains and electric water bottles, disinfection cabinet, microwave ovens, electric coffee pots, electric pots, air conditioners, plastic machines and other electric appliances.

With stable performance, high precision, small size, light weight, high reliability, long life, the small dry and so on the characteristics of the radio.

1, the use of contact with the temperature of the installation, the metal cover should be close to the installation of the control device surface, in order to ensure that the temperature effect, should be coated on the surface of the thermal conductivity of silicone grease or other similar thermal conductivity media.
2, the installation can not cover the top of the collapse, loose or deformation, so as not to affect performance.
3, can not let the liquid into the temperature inside the device, not the shell cracks, not free to change the shape of the external terminal.
4, the product is not more than 5A current circuit used, should choose copper core section of 0. 5-1 mm2 wire connection; not more than 10A current circuit used, should choose copper core section 0.75-1.5 mm2 wire connection.
5, the product should be less than 90% relative humidity, ambient temperature below 40 ℃ ventilation, clean, dry, non-corrosive gas storage


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Reviewed by 02 customer(s)

  • Bob Pastore

    Who manufactures the KSD line of thermostats?

  • Paul M

    I have a 120v 20 gallon GE compact water heater. single aspect. Ok so I changed my aspect however a week later it stopped working.

    the thermostat reset button will not click in location when the power is on. i saw a diagram of a 240v and a 120v thermostat and it’s wired like the 120v thermostat.

    i’m reconsidering the electrical wiring and it seems to be in location how it ought to be. i understand it’s different wiring for a 120v thermostat and 240v. however a few of the screws aren’t on the thermostat to wire it like a 240v thermostat.

    exactly what else ought to i do.


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