Thermal Relay Circuit Diagram. Thermal overload relay wiring diagramâ wiring diagram is a simplified welcome pictorial representation of an electrical circuit it shows the components of the circuit as simplified shapes and the facility and signal associates together with the devices. Hi friends in this article i am talking about thermal overload relay working principle and its function in a dol starter.
As shown in the figure above the bimetallic strip has two metals metal a and metal b. The construction of thermal relay is quite simple. Thermal overload relay wiring diagramâ wiring diagram is a simplified welcome pictorial representation of an electrical circuit it shows the components of the circuit as simplified shapes and the facility and signal associates together with the devices.
There you have it.
A thermal overload relay works on the heat produced by the excessive overload current the heat produced by the overload current is utilized to trip the motor circuit. There you have it. The thermal relay has low overloading capability. When over current flows through the heating coil it heats up the bimetallic strip.
