PCE IMST Distribution Box 32A 230V 2P+E to 6 x 16A 230V 2P+E IP44 6 x MCB’s PCE IMST Distribution Box 32A 230V 2P+E to 6 x 16A 230V 2P+E IP44 6 x MCB’s. PCE IMST Mobile thermoplastic distribution boxes are suitable for in- and outdoor areas. The boxes are available in different sizes and configurations, single phase or 3phase, 16Amp or 32Amp.