It lands at 45 mm wide, 102 mm tall, and 97 mm deep — a footprint that fits standard 35 mm DIN rail per DIN EN 60715, with screw and snap-on fastening that trims installation time on a populated rail. Spring-type terminals on the magnet coil accept solid or stranded wire from 1 to 10 mm², and the auxiliary wiring point accepts 2× (0.5 to 2.5 mm²). That covers the common panel wire sizes without needing bootlace ferrules, though ferruled stranded is fine.
Duty-cycle and switching frequency — the real constraint
The switching frequency tells you where this contactor lives comfortably. At AC-1 (resistive load) it cycles up to 1,000 operations per hour; at AC-3 (standard motor starting) and AC-3e it runs at 750 ops/h; at AC-4 (plugging / inching) it drops to 250 ops/h. If your application calls for frequent jogging or reversing, the AC-4 ceiling is the binding number — plan for the lower rate or oversize the contactor. Mechanical endurance is listed at 10 million operations typical, which is the contactor body's life before wear — electrical life will be shorter and depends on the switched current and duty class. The arcing time sits at 10 ms, with AC arcing time spanning 4 to 16 ms. That's within the normal range for a contactor this size; coordination with upstream short-circuit protection should account for the let-through energy during that window.
Mounting and clearance — fits a standard DIN rail layout
In a crowded enclosure, those numbers let you stack contactors side by side without extra spacing — just watch the heat dissipation if you run at maximum switching frequency. The auxiliary switch is included, which saves ordering a separate block for basic status feedback. The main contact rating is given as 18 to 8 — that's the range of auxiliary contact configurations available on the Size S0 platform, not a current figure. For motor loads, the 5 hp rating at 230 V gives a quick size reference for North American panel specs.