3 Pole Vs 3 Phase Breaker

This type of power is necessary for large motors welding equipment and other large loads.

3 pole vs 3 phase breaker.

In commercial and industrial applications the use of three phase power is common. The breakers are usually much larger than residential breakers. E t a s thermal circuit breaker switch combinations eg the three pole rocker actuated 3130 or the 3140 multipole model with push button operation offer a potential solution. Click to see full answer beside this can you use 2 poles of a 3 pole breaker.

Normally any residential users may use 120 240v single phase system therefore they d need 2 pole. The difference between two 120v wires is 240v that s why the voltage rating is 240v. The 3 pole breakers are used for three phase circuits where there is l1 l2 l3 and n wire. The 2 pole breakers are used for single phase ac circuits where there is an l1 l2 and n wire.

One and two pole switches are used for single phase applications and a three pole switch is used for three phase applications. Three pole standard circuit breakers must be discarded because their three pole chambers have identical ratings. Three phase power has three hot wires instead of one. Used most often in a three phase electrical system a three pole breaker connects three different conductors such as is often required by heavy duty industrial motors.

The difference is found in the amount of conductors that are connected or bridged by the three pole conductor. When a surge exists anywhere in the system across one or more of the conductors the breaker trips the power bridge collapses and the circuit opens.