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Working Principle:
Normally closed contact system, which is operated by a snap action of bimetal disc, is sensitive to current. When properly applied, protector shuts off the motor or the equipment when temperature exceeds maximum safe level due to an overload or stalled (locked rotor) condition. The greater the work current of motor is, the shorter time the cutting off power needs.

Using Range:
This type Circuit Breaker, overload protector is widely applied to overload protection in Motor, Power Adapter, Combined Outlet, Generator, Battery Charger, Air Compressor etc.

Specification:
Rating Current: 3A~50A
Rating Voltage: AC250V /125V, DC50V; 50~60HZZ
Interrupting Capacity: 1, 000Amp*125Vac; 20Amp*250Vac
Dielectric Strength: 1500Vac/1 min
Reset Overload Capacity: 10 times of Rated Current
Voltage Drop: Less than 0. 25V
Insulation Resistance: >500 M¦¸
Temperature Rise at Terminal Black: Less than 65° C at 100% of Rated Current applied continuously at 25° C
Contact Endurance: 125Vac*150% of Rated Current >500 Cycles

Calibration: 25ºC
100% of Rated Current: Hold, No-Trip
150% of Rated Current: Trip in an hour
200% of Rated Current: 5~25 Seconds Trip
300% of Rated Current: 1.5~8 Seconds Trip
400% of Rated Current: 0.75~5 Seconds Trip
500% of Rated Current: 0.5~3 Seconds Trip
600% of Rated Current: 0.4~2 Seconds Trip
800% of Rated Current: 0.3~1.5 Seconds Trip