• New Concepts and Systems

Thermal Overload Protector

Thermal overload protector is a bimetal disc specially designed for a specific rating of temperature. This provides a compete protection to single phase motors, transformers, pumps and all domestic appliances from damaging due to overheating. The miniature version of these protectors is a small round type device, which can be embedded into the motors or transformer winding or any other equipments. The protectors are selected according to the safe temperature of the motor or the equipment from damaging due to overheating. Whenever the equipment gets heated to the switching temperature of the protector, the contact of the protector changes it’s status and the equipment can be switched off to avoid further heating and burning. The protectors are available in different current ratings and wide range of switching temperatures from 60° to 160°C. The NC type protectors are connected directly in series with the winding of motors or primary of transformers. Whenever the winding gets heated beyond the acceptable limit, the contact of the protector opens and the equipment (motor or transformer) gets switched off. The protector contact resets automatically 40°C below the tripping temperature to avoid the chattering effect. This is a most economical and fail-safe solution to protecting the equipment from damaging due to overheating.