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The difference between a tpn mccb and a 4 pole mccb is rather negligible. The only real difference is that a 4 pole mccb works a little bit faster and allows for a strong network connection. The connection with a 4 pole mccb is just a bit more reliable.

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11y ago
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15y ago

TPN mean Triple Pole(TP)+ Neutral(N)which is 3 phases and neutral ,but the protection is given for three phases only and in 4 pole MCB protection is given to all 3 phases as well as neutral..

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Q: What is the difference between a tpn mccb and a 4 pole mccb?
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What is difference between TPN Mccb and 4P Mccb?

Basically tpn means the tripple pole + nutral protectin mbc .


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The main difference between the two is that a TP isolator is only a "triple pole" isolator. A TPN isolator is a "triple pole" and neutral isolator.


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The difference of TP and TPN in circuit breakers is the ability of the switch to hold a neutral position. With TPN, a neutral switch position is not possible. With TP, the breaker can be held in a neutral position.


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TPN is same as 4P MCB TPN means Three Pole and Neutral - four pole MCB. 4P is four pole MCB


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TPN stands for Triple Pole With a neutral link.normally this are the switches which are used in case of three phase connections and as main switch......gonecase17@gmail.com