Many large pieces of equipment are powered directly from high voltage lines. A relay is normally used in appliances below 5kw while a contactor is preferred when the appliance is heavier.
Three Phase Motor Control Circuit Difference Between Relay And Contactor Contactors Vs Relays
Relay contactor diagram. The diagram symbols in table 1 are used by square d and where applicable conform to nema national electrical manufacturers a ssociation. A relay is used only in control circuit while a contactor can be used in both control and. How to wire a contactor. Contactor wiring diagram pdf download furnas contactor wiring diagram download. Magnetic contactor circuit diagram luxury thermal overload relay. Contactor wiring and i hope after this post you will be able to wire a 3 phase motor i also published a post about 3 phase motor wiring with magnetic contactor and thermal overload relay but today post and contactor wiring diagram is too simple and easy to learn.
2 days ago i wired 380 to 440 volts contactor for a 3 phase motor and save these images of contactor in pc. Contactor vs relay applications. Pdf contactor wiring diagram with timer. These lines far exceed the 120 volts ac standard in most homes. Contactors are typically built for and used in 3 phase applications where a relay is more commonly used in single phase applications. 240 volts ac and 480 volts ac are commonly used for these large pieces of.
Otherwise the arrangement wont function as it. Difference between contactor and relay since a contactor is required for a higher load a relay is always cheaper than a contactor. Contactor breakers limit switch no static control standard elementary diagram symbols. Iec contactor wiring diagram bureaucraticallyfo. Lighting contactor wiring diagram with cell westmagazine net. Its is important to.
A contactor joins 2 poles together without a common circuit between them while a relay has a common contact that connects to a neutral position.
Gallery of Relay Contactor Diagram
