Vguard MCB 20A TPN C

TPN stands for Triple Pole and Neutral. It is a type of electrical distribution board used in power distribution systems. TP MCB is used in 3phase 4wire system. It is denoted as TP+N which will mean a three pole device with external neutral link which can be isolated if required. For the 4 pole breakers, protection applies to current flow through all poles. However when breaker trips or manually opened, all poles are disconnected.