MCB Distribution Box

MCB distribution box only that phase where there is an Earth Leakage fault is isolated, avoiding total darkness since the other two phases remain on. The configuration of TPNH PPI DBs is 4 way incomer by way of Isolator MCB, though the slot is for 8 way and 4+2 6+2 8+2 12+2 outgoing in all the three phases. Meaning thereby, we have in our range DBs for 4, 6, 8 and 12 ways outgoing. Here by +2 we mean, slot for sub incomer DP RCCB in each phase outgoing. Installation of DP RCCB in each phase avoids the total failuredarkness as only the phase where earth leakage fault exist gets isolated. For this isolation, each phase is having separate Neutral Link