Nowadays protection is very important in electrical works, and for different Electrical appliances we use different methods and different devices for protection, today i am writing about overload protector and it's wiring. In this post i am taking about automatic reset thermal overload protector which we use for single phase load. This overload we use to make safe our electrical devices from over current flowing.
Some Thing about Thermal overload protector relay
Today in which type of overload i talking, is a type of overload switch which is cut off the electric supply in case of over current flowing. This device is also called reset thermal overload switch. Mostly we use this device for single phase power supply, and i also published a post about refrigerator overload and it's working principles and this overload also working same like refrigerator O/L protector.
Also read below
In the above diagram i shown 20 A (ampere) overload and when ever it's trip you can also reset by pushing reset switch. When ever some over current flow from it's range it's will cut off the Electric supply and make his contacts open. Note that always use these overload regarding your load. If your overloading current 10 A and you use 20 A then it's will not trip until it's reached to the 20 Ampere.