3 Phase Wiring Diagram 3 Phase Overload Relay. Overload relays ac motors dc motors wiring capacitors resistors semiconductors table 1 standard elementary diagram symbols cont d. The contactor contains large load contacts that are intend to handle large amount of current.
We connect the circuit breaker contactor and overload relay in series between electrical supply and motor as shown in the below diagram. Overload relays ac motors dc motors wiring capacitors resistors semiconductors table 1 standard elementary diagram symbols cont d. To prevent this it is important to wire the starter so the current is balanced between the.
First of all wire the cb circuit breaker but do not switch on.
The overload relay is designed so the current to the motor is shared between phases so if you only wire up one phase then all the motor current goes through one of the contacts on the overload and you can actually create an overload condition. Learning how to do electrical work in an educational setting is the best way to ensure you understand what you are doing in home diy electrical wiring. Jan 6 2017 contactor wiring for 3 phase motor with circuit breaker overload relay diagram normally open and normally close push button switch diagram. The overload relay is designed so the current to the motor is shared between phases so if you only wire up one phase then all the motor current goes through one of the contacts on the overload and you can actually create an overload condition.
