Monday, January 5, 2015

How to Wire 3 Pole Circuit Breaker

Today this post is about the 3 pole circuit breaker wiring , in this post i will share with you a image and diagram in which i shown in coming 3 phase supply and out going supply. For three phase supply we use colors Red, Yellow and Blue.
Why i share this post about 3 phase supply circuit breaker, the only one reason of this post is that you learn something about the 3 phase wiring, further i will share posts about complete 3 phase wiring.
In this post i only share image / diagram with you for your better understanding. I hope this will help.

Method of Wiring of 3 Pole Circuit Breaker

Requirements :

Electric supply : 3 Phase supply
Circuit Breaker : three pole breaker
Electric Cable

In the below image i shown 3 pole circuit breaker wiring with 3 phase supply, however you can use in for 2 phase and neutral. The wiring of both is same. In below image i shown that how to wire 3 pole C breaker with 3 phase supply.

wiring of circuit breaker with in supply and out supply

In above example image i did not shown the neutral wire, however soon in my new post i will write about the 4 pole circuit breaker wiring.

Also Read Below.
How to wire 1 Pole Circuit Breaker
How to wire 2 Pole Circuit Breaker

Now come to the diagram and symbol wiring of 3 pole breaker. In below diagram i shown the symbol of three pole breaker with incoming supply and outgoing supply and i hope after that you will completely understood.
wiring method of three pole circuit breaker with symbol
I hope now you completely learned wiring of three pole breaker. Now if you have any question regarding this then do ask me in comments section below.


  1. From the KwHmeter there are only two wiring system supply to load. My question is. How to wire 3 conductor even there is only two wires? In three phase, center parts is a grounding? Where do i put for neutral?

    1. Dear there are two main types of kWh meter which single phae and 3 phase. In single phase we have 4 point in which 2 points for incoming service line and other two for out put. In 3 phase kWh energy meter we have 8 terminals in which 4 for incoming service line supply and 4 for the out put to load.
      In three phase 4 wire system wire is called 4 core or 5 core cable, in which red yellow, blue for L1 L2 L3 (Hot wires) and the black color wire for neutral and if the electric cable is 5 core the green wire for earth or ground.

      In you want to learn it completely about kWh meter connection then just serch in our we website search kWh and you will find the tutorials. And I hope these article / tutorials will help you to understand it.....