250V 5A-10A 50-150 C Thermal Control Switch For Power Supply And Laminator

Quick Detail:

1. H21 series Cut Off Switch’s Principle and structure

H21 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.

H20 thermal cutoff switch uses high sensitive disk-shaped bimetal strip as the temperature-sensing element. It is composed of bimetal strip, moveable contact, stationary contact piece, fixed base, moveable spring piece, case and temperature resistance lead wire.The bimetal strip is fixed on the base, which can maintain the consistency of disconnection and reset temperature after long-term use. Its' main function is overheating, overload protection.

Working principle: when the temperature rises to a certain value, the bimetal strip will instantly jump off and the contact will move quickly to disconnect the circuit. When the temperature falls to a certain value, the bimetal strip will be reset and the contact will return to the original state to achieve the purpose of switching the circuit. Its light weight, compact design maintains the lightweight, sealed housing of the whole device, and is resistant to drying, maintaining the accuracy and high reliability of disconnection and reset throughout its life.

Product features: H20 theraml overload prtoector is a temperature control switch developed by imported thermal bimetal, with small size, rapid action, accurate temperature control and long life cycle.

2. H21 series Cut Off Switch’s Specification

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

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

3. H21 series Cut Off Switch’s ’s Dimension

2. Structural Drawing

3. Action Temperature Table

Applications:

1. Electric motors

2. Induction cooker

2. Warm handbag

3. Vacuum cleaner

4. Soybean milk machine

5. Ballast

6. Washing machine motor

7. Air conditioner fan motor

8. Transformer, ballast

9. Induction cooker

10. Electric heating belt

11. Health care equipment

12. Pump fan

13. Battery

14. Power tools

15. Heating pad

Competitive Advantages:

1. Fast temperature sensing

2. Accurate temperature control

3. Large control current

4. Low contact resistance

5. Safe and reliable

6. Small size, easy to install

7. No arc discharge

8. Long life cylces more than 10,000 times

9. Anti-vacuum dipping process, can be dipped with the motor

10. There are two types of normally closed and normally open can meet customers' different requirements

11. The length and specifications of lead wire can be customized

12. Substitute SENSATA 7AM,17AM,SEKI St22 series

Notes:
1. To avoid affecting the performance of the product, please do not collapse or deform the plastic or metal case when install H20 and H21 thermal overload protector.

2. To avoid leakage of electricity, please do not remove the insulation tube when install H21 thermal overload protector.

Tag:
Thermostat Cut Off Switch, Thermal Control Switch, Temperature Cut Out Switch, Bimetal Temperature Switch