That is the number that governs the BOM line — do not confuse it with AC-3 motor ratings. The 4-pole configuration gives you 2 normally-open and 2 normally-closed main poles, so you can switch multiple load circuits or use one pole for a neutral.
The contactor measures 85 mm wide by 127 mm tall by 110 mm deep, fitting a standard DIN-rail footprint or a plate-mount pattern. Power-circuit tightening torque is 5 N.m; control-circuit torque is 1.2 N.m. Pollution degree 3 rating confirms it handles conductive pollution typical of industrial control cabinets.
It carries TH protective treatment per IEC 60068 for tropical environments. These standards cover the contactor's performance for switching, isolation, and environmental endurance in industrial control panels.