Payment & Shipping Terms:
|Case:||Plastic Case Or Metal Case||Votage And Current:||250V 5A, 250V 10A|
|Size:||18.5*8*4mm ,18.5*7.5*3.8mm||Lead Wire:||#20 3135|
bimetal thermostat switch,
bimetal thermal fuse
H20,H21 series thermostat’s Principle and structure
H20,H21serial 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,H21series thermal protector’s Specification
Switch type: normally closed, normally opened.
Operating Voltage / Current: AC250V / 5A; AC125V / 8A
Operating Temperature: 40~150℃ (one step for every 5°C)
Standard Tolerance: ±3°C / ±5°C / ±7°C
Reset temperature: operating temperature decrease by 15-45°C
Contact Closure resistance: ≤50mΩ
Insulation resistance: ≥100mΩ
Electric strength: AC1500V/1min free from phenomena of break down and flashover.
Service life: 10000 times
H20,H21series thermal protector’s Dimension
|H20||Plastic||18.5||8||4||#22 3266 white, or according client’ reques|
|H21||Metal||18.5||7.3||3.8||#20 3135 red, or according client’ request|
H20,H21series temperature protector’s Application
H20,H21series is applicable to chargeable battery, ballast, massager, micro motor, transformer, electric tools, heat electric appliance and instrument etc.
The product UL,CQC,TUV and RoHS certification approval.
Contact Person: Li