This document provides specifications for various distribution boxes including dimensions, mounting sizes, and number of ways. We'll chat about what each one does, where it shines, and then dive into how to choose the perfect box for your needs. Plus, we'll sprinkle in some practical tips to make sure you're not. Load Center Design Design Features Performance Features Safety Features Load Center Specifications Box Wrapper Specifications Ease of Instollation Features BAHRA MCB as per IEC Standard Features Range Circuit Breakers BAHRA Branch Breaker specification BAHRA (MCCB) Breaker specifications (IEC). Wiring diagram shows both PNP and NPN wiring. Actual units use PNP status indicator, NPN status indicator, or neither. Dimensions are shown in mm (in. The hub distributes electrical power from a single input source to various circuits throughout a building. Whether it's a home, office, or factory.