Thermal Overload Breaker Symbol

Protection against overload and short circuits using thermal overload relays electro magnetic relays circuit breakers with releases fuses etc.

Thermal overload breaker symbol. Unlike a fuse which operates once and then must be replaced a circuit breaker can be reset either manually or automatically to resume. Available in svg png jpg dxf dwg formats. Fuses are devices containing a small piece of special wire that melts when the intensity of the current flowing through it for a certain period of time exceeds a set value thus protecting the rest of the electrical circuit overloads. Power circuits have to carry heavy power and therefore they consist of heavy conductors along with contactors used for switching the power on and off.

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit its basic function is to interrupt current flow after a fault is detected. It connects three phases whenever there is an overload or short circuit in any phase the circuit breaker trips all three phases simultaneously. Thermal magnetic circuit breakers are popular because they can quickly limit short circuiting and then restart the flow of electricity when the surge has passed. This symbol represents circuit breaker with three poles.

Circuit breaker safety set thermal magnetic circuit breakers according to the manufacturer s directions for safe and effective functioning.