Base Units

SIEMENS base units are components for accommodating the ET 200SP I/O modules. The self-assembling voltage buses integrated into the base units reduce wiring outlay to the single infeed (both of auxiliary and load voltage). All modules following on the right are automatically supplied upon plugging the base units together, if base units are inserted with routing. The rugged design and keyed connection technology enables use in harsh industrial conditions. The base units are available with various infeeds for the motor starters.