SIMBOX Universal WP N/PE terminal block 2x5x 25mm2+2x14x 10mm2 Small distributor ALPHA SIMBOX - optimal down to the last detail. The small distributors ALPHA SIMBOX are designed for optimal use of space even in tight spaces. 1. The ALPHA SIMBOX XL offers generously dimensioned wiring spaces. 2. The small distributors are characterized by an extensive accessory package that is compatible with the flush-mounted distributor/hollow-wall distributor (terminals, cover strips, door lock).