It is part of the SIRIUS family, the standard for motor feeders in European control panels.
Clearance requirements: 50 mm upwards and downwards, 30 mm at the sides, 0 mm forwards and backwards — so it can be packed tightly against other devices on the same rail as long as vertical airflow is maintained. Terminals are M3 screw-type for the main current circuit, accepting 2×(0.75–2.5 mm²) solid or stranded, or 2×4 mm². Strip length and torque are standard for this terminal size.
