The 45 mm width leaves room on a crowded rail. Wire range accepts 1 to 10 mm² solid or stranded, and 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) fine-stranded with ferrules. Main contact torque is 16 to 8 Nm.
Clearances and position
That flexibility helps when retrofitting into an existing panel where the rail is at an odd angle.
Switching rates and life
Rated for 1,000 cycles per hour in AC-1, AC-2, AC-3, and AC-3e duty, and 300 cycles per hour in AC-4. Arcing time runs 10 ms.
Environmental range
That storage range covers most warehouse conditions without special handling.