Motor Starter Contactor Wiring

Large electric motors can be protected from overcurrent damage through the use of.

Motor starter contactor wiring. How to wire a contactor and motor protection switch. How to wire a contactor and overload. Dol motor starter with 230v contactor coil. A contactor to open or close the flow of energy to the motor and an overload relay to protect the motor against thermal overload.

The motors starter wires directly to the motors wire terminals. In the above one phase motor wiring i first connect a 2 pole circuit breaker and after that i connect the supply to motor starter and then i do cont actor coil wiring with normally close push button switch and normally open push button switch and in last i do connection between capacitor. You must watch this video. The short circuit protection is not shown here.

A contactor is a large relay usually used to switch current to an electric motor or another high power load. Motor starters have a set of contactors. The motor starter must have a contactor to open or close the flow of energy to the motor and an overload relay to protect the motor against thermal overload. This magnetic field pulls on the contactors points allowing electricity to flow to the motors windings.

Other devices for disconnecting and short circuit protection are necessary typically a circuit breaker or fuses. Use transformer if you need to. When the motors switch is turned on voltage flows through the contactors coil creating a magnetic field.