Contactor Wiring Guide For 3 Phase Motor With Circuit Breaker Overload Relay NC NO Switches
In industrial system we use mostly three phase electric power for electric induction motors. A single phase induction motor can not do work as a 3 phase can done. For 3 phase motor we use some electrical devices for starting, off and resetting, magnetic contactor is one of them thats why today we disuse about contactor wiring with complete explanation. In 3 power system we use some devices between induction motor and supply which are a CB Circuit breaker, MC magnetic cont actor or motor stater, O/L overload relay and NC, NO push button switches for on/off and reset.
In this tutorial post i will tell you about motor contactor wiring and its diagram. But before we will disuse devises and working.
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The symbol diagram is best but every one cant understand it easily that why i always focus on image+diagram which easy and simple to understand and good for learning. But you know that this diagram designing takes bag time from the time of symbol diagram. But i love my readers, as i am a student and struggling- for learning. I want to share all things which i learned.
Magnetic contactor relay wiring and circuit breaker , push button wiring method is simple. And i think that there is no importance to explain more after making diagram, however lets get a short tips journey.
For 3 phase motor controlling diagram and procedure, follow the below tips.
In above contactor wiring diagram i shown 3 phase 440 volts 4 wire system. I take one phase and neutral wire for MC coil which 220V, but always wire your contactor coil regarding coil voltage / current requirements. If coil required 110V to 120V then provide 110 volts supply and if it is want 380 volts to 440V to energize then connect same required supply. The coil voltage cheat- is near- in coil supply terminal/co nnection so check it first before starting.
In overload relay we have to option which NC and NO. When the flow of electron is high ring- from its value the NC points change its direction and make an open circuit or broke- the circuit. Which are shown in above image with 95-NC-96.
If you want to learn from symbol contactor wiring diagram then click here.
Stay tune.... and keep visiting......
How To Do Contactor Wiring For 3 Phase Induction Motor With 3 Pole Circuit Breaker, Overload Relay, NO,NC Push Button Switches
In this tutorial post i will tell you about motor contactor wiring and its diagram. But before we will disuse devises and working.
3 Pole Circuit Breaker CB
For 3P power supply we use to 3 pole circuit breaker for switching supply. Always use a CB before circuit wiring, from this you can make your circuit safe and we you will be able to switch off/on any time. You can also use 4 pole breaker, which is very best because you can control also the neutral wire.MC Magnetic contactor
For 3 phase induction motor start/stop we use always MC contact or. Its is a type of electric relay which can switch the 3 electric connections easily. I also published post about motor starter working you can see on below links.Click here for more information.
O/L Overload Relay
Overload relay is protective device which make safe our electric motor form burning- during high current flowing to the induction m otor. There are two popular types O/L relay which is thermal overload relay and Electronic overload relay. In this wiring diagram contactor, i shown thermal overload relay however soon i will make a diagram about electronic relay.NC Normal Close Push Button Switch
For motor contactor wiring we use push button switches for switching on/off the motor. NC means normal close which means that this push button is normally in close circuit and when we push, its make an open electric circuit. I show NC with red color button and NO with Green color.For details Click here.
NO Normal Open Push button Switch
The Normal open S is normally in open electric circuit and if a person push this NO its make NC circuit. For further information visit below link.For more info click here.
MC Motor Starter Wiring Diagram With CB,MC,O/L, NO, NC
The symbol diagram is best but every one cant understand it easily that why i always focus on image+diagram which easy and simple to understand and good for learning. But you know that this diagram designing takes bag time from the time of symbol diagram. But i love my readers, as i am a student and struggling- for learning. I want to share all things which i learned.
Magnetic contactor relay wiring and circuit breaker , push button wiring method is simple. And i think that there is no importance to explain more after making diagram, however lets get a short tips journey.
For 3 phase motor controlling diagram and procedure, follow the below tips.
- First of all wire the CB Circuit Breaker but do not switch On.
- Then Wire push button wiring O/L relay and MC coil, which we can called small wiring.
- Then wire the overload relay wi th MC.
- Then Do connection between CB and MC.
- Then do motor supply connection with Overload relay.
- Then connect the earth led wire to the motor body.
The New Diagram is best So use the New diagram Connection
In overload relay we have to option which NC and NO. When the flow of electron is high ring- from its value the NC points change its direction and make an open circuit or broke- the circuit. Which are shown in above image with 95-NC-96.
If you want to learn from symbol contactor wiring diagram then click here.
Message :
The above is example diagram of contactor wiring with overload relay, and i hope that this diagram help newbie very mush. But this is only starting and IN SHA ALLAH we will make more best contactor wiring and more tutorials for you.Stay tune.... and keep visiting......
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