Mechanical switching frequency varies by duty: up to 1000 cycles per hour at AC-1 (resistive loads), 750 cycles/h at AC-3 (standard motor starting), and 250 cycles/h at AC-4 (plugging/inching). The AC-3e rating also sits at 750 cycles/h. That spread tells you this contactor is sized for moderate-speed motor cycling — not high-speed resistor banks, not continuous jogging. Those numbers matter when coordinating with upstream protection or sequencing multiple contactors in a star-delta start. Terminals accept solid or stranded conductors from 0.5 to 4 mm², with dual-wire capability up to 2x 2.5 mm².
The 45 mm width and 58 mm height fit the S00 footprint. Depth measures 73 mm from the mounting surface to the front of the terminals — account for that when sizing the enclosure depth and gland plate clearance.