The 4.5 width-unit body mounts on standard DIN rail or via screw fixing, with tunnel terminals top and bottom accepting solid or stranded conductors from 0.75 mm² up to 50 mm² (AWG 14 to 2). Terminal torque spec is 2.5 to 3.5 N·m (22–31 lbf·in). Mechanical service life is 20 000 switching cycles typical.
Construction and environmental compliance
Shock resistance is 150 m/s² at 11 ms half-sine per IEC 60068-2-27; vibration resistance is 50 m/s² at 25 to 150 Hz and 60 m/s² at 35 Hz (4 sec) per IEC 60068-2-6. These ratings suit the breaker for installation on machinery or in panels subject to mechanical stress.