The Schneider Electric A9XPH318 is a cuttable comb busbar from the Acti9 range, configured as 3L (three lines) with an 18 mm pitch spanning 18 modules. It carries a rated operational current of 100 A at 40 °C and a rated operational voltage of 415 V AC, with an insulation voltage rating of 500 V AC per IEC 61439-2.
The 100 A rating at 40 °C governs the maximum continuous current this busbar can distribute across its three phases without exceeding thermal limits. The 415 V AC operational voltage matches standard three-phase distribution voltages in many industrial and commercial panels. The 18 mm pitch and 18-module length mean it fits DIN-rail terminal blocks and modular devices spaced at the standard 18 mm per pole — common across the Acti9 and similar modular ranges. The IP20 rating with end-pieces and tooth covers means it is touch-safe in enclosed panels but not protected against moisture ingress.
The busbar complies with EN/IEC 61439-1 (low-voltage switchgear and controlgear assemblies) and IEC 60947-7-1 (terminal blocks for industrial applications). Fire resistance is tested to 960 °C for 30 seconds per IEC 60695-2-1. The 500 V insulation voltage rating ensures it can be used in systems where fault voltages may rise above the nominal operating level.