Snap Type Thermal Overload Protector Switch , TH-A1D Thermal Motor Protector

TH-A1D thermal motor protector, TH-K-A1D thermal cutouts

BH series mini thermal protector’s Principle and structure

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.
BH series mini thermal protector’s Application

It is widely applied for all kind of motors, lighting, inverter welder, switch power supply, heating appliance, rechargeable battery pack, transformer, rectifier, portable power tool, water pump, AC motor etc.
BH series mini thermal protector's specification
1. Contact’s type: Normally closed and Normally open
2. Electrical rating:
BH-B2D & BH-A1D: 12A/DC12V;10A/DC24V;8A/AC125V;5A/AC250V
BH-TB02B-B8D:4A/DC12V;3A/DC24V;3A/AC125V;2A/AC250V
3. BH-B2D & BH-A1D Circuit resistance: ≤50mΩ ; BH-TB02B-B8D Circuit resistance: ≤30mΩ
4. Insulation resistance: ≥100mΩ
5. Action temperature range: 35~155℃
6. Case: metal case and plastic case
7. Life: ≥10,000 times
8. Size:

9. Open temperature and reset temperature sheet

BH series mini thermal protector’s advantage

1. Small size and installation size

2. Low internal resistance,≤30mΩ

3. Snap type, sensitive to current and temperature and action quickly

4. Endurance life more than 10000 cycles.

5. Prevention again leak if vacuum impregnation process

6. Double protection of over-current & over temperature

7. Replacer of 4mm/6MM form SENSTAT, IP405/505 from ISUZU and other imported products from PEPI

BH series mini thermal protector’s drawing

Dong Heng Hao Electric Co., Ltd is located in Dongguan City, Guangdong Province with very convenient transportation and favorable Geographic location.

We are specialized in developing and producing temperature controllers, thermostat, thermal protectors , temperature switch, temperature protector bimetal thermostat and other related products, our company has more than 10 senior technicians who are very familiar with this industry. Our product have been certified by CQC,TUV,UL CUL and ROHS environmental certification. Our company is always adhering to ISO 9001:2000 Quality Management System and the product quality is automatically inspected and controlled by the computer. Our annual output can reach 50,000,000 pieces and our products are widely exported to Europe, America and South Asia.