The HCET-B current and temperature dual protection motor protector (self-holding type) features both overheating protection and precise control of current overload duration. It offers an optional power-off reset function, providing a higher level of safety protection.
Model: HCET-B
Temperature Range: 50℃ - 180℃
Features:Small size, insulated shell, easy to install, with dual temperature and current protector functions; power-off reset function can be added
Dual protection for temperature and current
Optional power-off reset function
Overload trip current can be customized up to 35A
Highly precise tripping time (3s–8s) to prevent motor overheating
Compact and insulated for easy installation
Each component strictly complies with the European RoHS environmental standards
Electrical Specifications:
30 amps/15 volts DC |
15 amps/30 volts DC |
25 amps/250 volts AC |
35 amps/125 volts AC |
Technical Parameters:
Operating Temperature Range |
50℃–180℃ customizable within this range |
Temperature Tolerance |
±5℃，±8℃ |
Overload Current Tripping Range |
1A-35A |
Tripping Time |
3S-8S(customizable upon request) |
Application Range
Vacuum cleaners, shredders, blenders, lawn mowers |
Power tools, snow blowers |
Washing machine motors, juicer motors, soy milk machine motors, etc. | |
Label Description
| HCET - B | ***** | P | * | A101 |
| 1 | 2 | 3 | 4 | 5 |
1. Product model: HCET-B type current temperature dual protection motor protector & temperature control switch
2. Parameter code: including action temperature, current and action time
3. Self-locking function: with P, it has the function of self-holding after power failure, without P, it does not have this function
4. Lead wire code: replaced by numbers and letters, according to customer drawing requirements
5. Manufacturing date:
letters from A to Z, A represents 2000---Z represents 2025, and so on;
Numbers from 1 to 52, 1 represents the first week of each year---Z represents the 52nd week, and so on
Physical Dimensions:
Design Principle:
The bimetal of the HCET-B motor protector is connected in parallel with the PTC and then in series with the heating wire to form a series circuit, and then connected in series with the motor. When the load is operating normally, the current passing through the heating wire and the bimetal is small, the bimetal will not act, and the PTC will not generate high temperature.
When the load is abnormal, the high temperature or high current will cause the bimetallic circuit of the HCET-B protector to be disconnected. At this time, the PTC element will generate high temperature and high resistance (the high temperature of the PTC will keep the HCET-B motor protector in the disconnected state), and the load will stop running.
When the power is manually disconnected, the PTC starts to cool down. After a certain period of cooling, the HCET-B motor protector automatically resets, and the power is turned on again, and the load runs.
EN