ZY7 Wholesale Ceramic Limiting Motor Transformer Protection Thermal Protectors PSE Temperature Fuse Thermal Cutoff Fuses

General introduction of thermal cutoffs:

RH series ceramic thermal cutoff has a certain range of temperature setting and bearing capacity to select. When the device is not working properly and will reach to the set max temperature, then the ceramic thermal cutoff will cut off circuit to prevent security incidents arise.Thermal cutoff mainly used in home appliances and electrical components (e.g. transformers, solenoids, AC adopters) overheating protector.

The dimensional drawing of thermal cutoffs:

Model Number and main parameters of thermal cutoffs :

Test method of thermal cutoffs :

An indicator under current less than 10mA will be used for checking circuit continuity.

1 Rated function temperature(Tf):

Put the samples into the professional oil oven, and remain 5 ~ 10 minutes under temperature Tf-20C. After that, increasing the temperature at the speed of 0.5~1K/min until the fuse cuts. The off temperature should be inside of tolerance.

2 Holding temperature (Th)

Put the samples inside of an incubator and the applied voltage should be less than rated voltage, current applied at 10A. Then, maintain the samples for 168 hours under Th-6C. After that, the thermal fuse should not function or damaged.

3 Humidity test

Put the samples inside a sealed room under temperature 40±2C,and relevant humidity 90%~95% for 48 hours. After that, repeat test 3.1

4 Heat impact test

Put samples inside of a fridge at -18C for 15 minutes, then take it out under room temperature for 5 minutes. After that, put the samples to an incubator at temperature Tf-20C for15 minutes. Then, take it out under room temperature 5 minutes again. Repeating the above tests for 3 weeks, then test the contact resistance of thermal fuse, the contact resistance between two leads should be less than 50mΩ.

More choices of thermal cutoff:

Production Capability, Precise Equipment

Q2:What qaulity assurance system do you use in your factory to ensure the thermal fuse quality?

A:Under IS0 9001 quality assurance system, we are producing over 200 million pcs organic type (RY type) thermal links every year. Our products got the certification of TUV, CE, PSE, KC, CB and UL. In 2013, we cooperated with UL and established a laboratory under Witness Testing Data Program. Then, we became the only one thermal fuse manufacturer in China who has a laboratory under Witness Testing Data Program (WTDP).

ZY7 Wholesale Ceramic Limiting Motor Transformer Protection Thermal Protectors PSE Temperature Fuse Thermal Cutoff Fuses

ZY7 Wholesale Ceramic Limiting Motor Transformer Protection Thermal Protectors PSE Temperature Fuse Thermal Cutoff Fuses

ZY7 Wholesale Ceramic Limiting Motor Transformer Protection Thermal Protectors PSE Temperature Fuse Thermal Cutoff Fuses