Distribution & Enclosures

Distribution & Enclosures covers the panels, terminal blocks, busbars, and accessories that house and distribute circuits from a main incomer to individual final circuits.

Enclosures follow IEC 61439 for the finished assembly and typically carry IP44 to IP66 depending on indoor or outdoor mounting, while modular devices inside them clip onto a 35 mm DIN rail sized in 17.5 mm (DIN 43880) module widths. Terminal blocks and busbars set the maximum current and cross-section the panel can carry.

• Enclosure rating — IP44/IP54 for dry indoor cabinets; IP65/IP66 for outdoor or damp locations, such as the Psmart RM series.
• DIN capacity — count total module width (18 mm per single unit) against the enclosure's rated DIN space before adding breakers.
• Connection type — screw or spring terminal blocks for field wiring; busbars for high-current distribution between devices in one row.