Ceramic Thermal Fuse Cut Off
Thermal fuses are mainly used for overload protection. If the fuse is correctly placed in the circuit, the fuse will automatically cut off the current when the current abnormally rises to a certain height and heat, which protects the safe operation of the circuit.
The Ceramic thermal fuse cut off is Low-melting alloy type, ceramic cylindrical shape, 70 ℃ -240 ℃ rated operating temperature, 1/2/3/5/10/15/20 / 25A rated current.
Rated functioning temperature(Tf):
The temperature of Thermal Cutoff changes its state of conductivity to open circuit detection curret.The tolerance according to IEC60691 is from +0 to-10°C.
The fusing-off temperature indicates value measured in silicon oil with a temperature increased by 0.5-1°C per minute and a detective current 100mA or less.
The maximum temperature of a thermal Cutoff will not cause a change in state of conductivity to open circuit while conducting rated current for 168 hours. This rating is required by safety standards based on IEC60691.
Maximum temperature limit(Tm):
The maximum temperature of a Thermal Cutoff can be maimtained for 10 minutes without reclosing.This rating is requirde by safety standards based on IEC60691.
The allowable maximum current which a Thermal Cutoff is able to carry.
The allowable maximum voltage which a Thermal Cutoff is able to be applied.
The feature of thermal fuse
Remarkable sensitivity to temperature rise due to its shape and small size
High reliability and accuracy due to resin-seal
Appropriate for electric flows with large current