1. Type ALPHA

The rear profiles are suitable for mounting any appropriate wiring carrier, e. g. bus and connector securing devices, used with insulation strips or Z-rails for mounting connectors according to DIN 41 612.

2. Type BETA

The rear profiles with integral Z-rail are suitable for the direct mounting of connectors to DIN 41 612.

3. Type DELTA

The rear profiles are 2.6 mm deeper than in the type alpha, permitting direct  mounting of multilayer backplanes and/or connector securing devices for mounting of DIN connectors.