Normally Open Temperature Thermal Switch

Thermostat switch for fireplace fan/fireplace blower kit

Name: KI31/KSD301 Normally Open Limit Thermostat Switch

Use：Temperature control/Overheat protection

Action type: Normally Open(NO)

Voltage and current：AC110V/120V/125V/250V/16A; DC12V/24V/48V/20A;

Operating Temperature：40~50°C(104~122°F)

Temperature accuracy：±3℃，

Contact resistance：≤50MΩ

Insulation resistance：≥100MΩ

Life span：About 100,000 times

Electrical strength：AC 50Hz 1800V lasted for 1min, no flicker, no breakdown

Size (Each)：1.34" x 1.18"x 0.47" (L*W*H)

Mounting Hole Spacing：23.8mm / 0.937inch

Pin width：6.3mm/0.25inch

Package Content：2pcs x KSD301 Normally Open Thermostat Switch

Gas fireplace switch

Wood stove thermostat switch

Tips:

KSD301 and KI 31 are the same 1/2 inch thermostat, but the way of naming is different, the same type has a well-known manufacturer's model KSD302/KSD303/KSD201/1NT/TK 24/36T /US-118 /T11 and other names. Performance is consistent and all are interchangeable.

Pls kindly Note: Due to the influence of the ambient temperature, the thermostat below 50 degrees, during the transportation and storage process, the thermostat circuit has been disconnected, need to put the thermostat in the refrigerator to cool and reset before use. For example, 30±3℃ normally closed KSD301 thermostat , under normal circumstances 30±3℃ circuit is disconnected, 20±3℃ circuit is connected. When the ambient temperature is higher than 40 degrees Celsius, the circuit of the thermostat is disconnected and needs to be cooled and reset before use.

Normal Close: OFF temperature higher than ON temperature

Normal Open: ON temperature higher than OFF temperature

Thermal Switch for wood stove

Thermal Fan Switch for Fireplace Blower

Installation Precautions:

1.Before installing this part, unplug the household appliances,Cut off the power completely.

2.Take a picture first before removing any parts, so you know how to restore everything at the end.

3.The temperature controller is a series circuit, not parallel, installation must refer to the original product circuit design.

4.Do not collapse, loosen or deform the top of cover surface during installation to avoid affecting performance.

5. Lock the screw hole, should be fixed at the same time, then lock, avoid the bracket to the other side of the tilt, resulting in temperature control aluminum cover deformation, temperature control parameters change.

6. For the sake of safety, the connecting wire terminal shall be insulated and closed.

7.Do not allow liquid to penetrate into the interior of the thermostat or crack the housing.

8.The thermostat should be stored in a warehouse with RH less than 90% and ambient temperature less than 40 ℃, which is ventilated, clean, dry.

9. CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

KSD301 cutoff switch

In addition to appliances, the KSD301 snap disc thermostat also widely used in equipment :

Communication equipment

Monitoring equipment

Welding equipment

Electric tools

Refrigeration equipment

Heating ventilation equipment

Boiler equipment

Electric heating products, etc

KSD301 overheat protector

KSD302 thermostat