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Auto Reset Thermal Overload Protector Switch Inverter Welding Machine Usage

Categories Thermal Overload Protector Switch
Place of Origin: DONGGUAN,CHINA
Brand Name: HENGHAO
Certification: UL CQC TUV ROHS
Model Number: BH
MOQ: 1000PCS
Price: US$0.18-0.3PER,pc
Packaging Details: 1000 pcs per carton
Delivery Time: 7-10 WORKING DAYS
Payment Terms: TT FOB SZ
Supply Ability: 1000000PCS PER MONTH
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    Auto Reset Thermal Overload Protector Switch Inverter Welding Machine Usage

    BH-AID thermal switch,BH-AID thermal protector


    BH series thermostat / Miniature thermal protector / Rechargeable battery thermostat

    1. BH series thermostat’s Principle and structure

    BW & BH series that can protect against over-current and over-temperature are sealed firmly, small internal resistance, no noise and reset automatically. When current through bimetal that are sensitive to temperature and current, the status of the bimetal will be changed by over-temperature or over-current to cut off circuit or switch on circuit. BH series are safer than normal protectors, as there is no temperature effect lag under condition of sudden big current.

    2. BH series thermostat’s Specification

    2.1. Electrical Rating:

    a. DC-12V max 12A; DC-24V max 10A; AC-125V max 8A; AC-250V max 5A for BH series

    b. DC-12V max 4A; DC-24V max 3A; AC-125V max 3A; AC-250V max 2A for BH-TB02 series

    2.2. Open temperature: (30~150)+-5°C; 5°C a step.

    2.3. Reset temperature: 2/3 of the action temperature with tolerance of +-15°C. Reset temperature can also be provided according to customers' requirement.

    2.4. Dimension

    ModelLength (mm)Width(mm)High(mm)Lead wire
    BH-TB02B-B8D13.55.42.43266-AWG24#, 3135-AWG24# or nickel strip normally, length is 70 mm or according to customer’s require
    BH-A1D156.63.2
    BH-B2D157.33.9
    BH-B3D1884

    3. BH series thermostat’s Application and Instruction

    BH series thermal protectors ,effective reliable security protector and alarm devices, are widely used in various types 1.5 horsepower motors, lighting device, inverter welding machine, switch power, rechargeable battery pack, fluorescent lamp ballasts, portable power tools, electric appliances and other electric equipment to prevent from over-current & over-heating caused by abnormal work status. Enforced types that can withstand pressure of 3.5MPa are fit for build-in-installation of plastic coated motor.

    4. BH series thermostat’s Code System of Product

    4.1. BH series Code system

    4.2. BH-TB02 series Code system


    1. Case 2. Spring contact 3. Bimetal 4. Unmovable piece 5. Base 6. Epoxy resin 7. Spring piece 8. Lead wire

    CodeOpen temperatureReset temperatureCodeOpen TemperatureReset Temperature
    03030+-3℃≥20℃09595+-5℃70+-15℃
    03535+-3.5℃≥25℃100100+-5℃70+-15℃
    04040+-4℃≥30℃105105+-5℃75+-15℃
    04545+-4.5℃≥33℃110110+-5℃75+-15℃
    05050+-5℃≥35℃115115+-5℃80+-15℃
    05555+-5℃42+-6℃120120+-5℃85+-15℃
    06060+-5℃45+-8℃125125+-5℃85+-15℃
    06565+-5℃48+-10℃130130+-5℃90+-15℃
    07070+-5℃50+-12℃135135+-5℃95+-15℃
    07575+-5℃53+-14℃140140+-5℃100+-15℃
    08080+-5℃55+-15℃145145+-5℃100+-15℃
    08585+-5℃60+-15℃150150+-5℃105+-15℃
    09090+-5℃65+-15℃155155+-5℃110+-15℃

    The product UL,CQC,VDE and RoHS certification approval.

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