Distribution boxes are often assembled from polyester boxes of the INDEX.E.F or stainless steel boxes of the INDEX.E.Y types in combination with Ex components such as switches, circuit breakers, motor protection switches, fuses, contactors, relays and auxiliary relays, transformers, with or without the control and indication units as mentioned in product group C. The polyester boxes are easy to connect to each other, which increases the flexibility. The stainless steel enclosures can be supplied in many sizes to customer specifications.

The distribution boxes can be equipped with inspection and / or service windows through which the various components can be inspected or operated. For example to reset circuit breakers.