Normally closed contact system, which is operated by a snap action of bimetal disc, is sensitive to both temperature and current. When properly applied, protector shuts off the motor 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.
This type thermal protector motor protector is widely applied to overheating and overload protection in Motor, Fans, Submersible Pump, Various Pumps, Agricultural Equipment, Air Compressor and Appliances etc.
Electrical Ratings: AC380V -----1A~30A
Circuit Control Mode: NC/NO (Automatic Resetting)
Rated Action Temperature: 60º C---140º C (Designed by user's requirements)
Open Tolerance: ± 4º C, ± 5º C
Open & Close Tolerance: 15º C-60º C
Close Tolerance: ± 8º C, ± 10º C
Action Cycle: No less than 10, 000 times
Normal Electric Strength: Not Broken within 2000V / 1 minute, No flash.
Normal Isolated Resistance: >100M Ω
Calibration: 25º C
105% of Rated Current: Hold, >2 hours No-Trip
200% of Rated Current: Within 2 minute Trip
600% of Rated Current: 5~15 Seconds Trip