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Thermal Cut-off Protector 250V 5A 24V/12A BR-A1D DC Thermal cutout

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Address: Xinhua Cun, Chunjiang Town, New-north District, Changzhou, Jiangsu China PRC 213000

Contact name:Wendy zhang

Jiangsu ChangSheng Electric Appliance Co., Ltd

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Thermal Cut-off Protector 250V 5A 24V/12A BR-A1D DC Thermal cutout

Country/Region china
City & Province changzhou jiangsu
Categories PTC Heaters

Product Details

24V/12A BR-A1D DC Thermal Overload Protection , Thermal Cut-off Protector 250V 5A
Normally on and open on temperature increment
Changsheng BR-A1D series motor protector is built to meet almost any requirement of protection in a wide range of small motors, small transformers, solenoids, and more. This compact motor protector is the best solution to protect the wide variety of motors under 1 Hp used in industrial and domestic appliances against locked rotor and overload situations.
This motor protector consists of a metal SPCC housing that holds and protects the inner components against infiltration as well as mechanical deformation. In single–phase motors, the BR-A1D can be mounted directly in the main circuit to serve as an on– or in–winding protector.


  • Small motors
  • Coils
  • Transformers
  • Washers and dryers  
  • Dishwashers
  • Automotive accessory motors
  • PC boards
  • Battery charges
  • ………and more.


Contact capacity

125Vac/8A, 250Vac/5A, 24Vdc/8A

Cycles life

6,000 cycles

Open temperature

50°C to 150°C in increments of 5°C

Temperature Tolerance


Differential Temperature

depending on open temperature


Epoxy resin

Contact resistance

≤50 mΩ  

Insulation resistance

The resistance between the leads and insulation sleeve is >100 MΩ with 500 VDC at 25 °C.

Lead wire pull strength

30 N applied from lead to lead for 5sec. No slip-off or rupture

Competitive Advantage:

1. The strongest Chinese manufacturer, ISO 9001and ISO14001 recognized.

2. Compact, miniature size.

3. UL,VDE,CE CQC Approved.

4. Individually temperature checked on modern, custom-designed equipments from Japan.

5. Snap–action disc, normally on.

6. Epoxy resin

7. Bimetal discs carry circuit current, so it is current and temperature double sensitivity for maximum design flexibility and application


BR-A1D with standard metal case



BR-A1D with enforced metal case
Note: wall thickness of the enforced case is 0.5m minimum and it will withstand 30MPa injection pressure (no deformation)



  • ①Metal case  ②Bracket  ③Bimetallic disc ④Movable contact    ⑤Fixed base
  • ⑥Stationary contact     ⑦Epoxy resin   ⑧Lead wire


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