Rated operational current is 25 A in AC-7A category (general use) and 8.5 A in AC-7B (motor switching), at 250 V AC 50 Hz. The utilisation category AC-1 per IEC 60947-4 confirms it handles resistive loads up to its full rating. Control coil is 230 V AC 50 Hz, maintained signal type — no latching, so it drops out on power loss. Electrical durability is rated at 100,000 cycles under AC-7A at 25 A, and 30,000 cycles under AC-7B at 8.5 A. That means it's built for moderate switching frequency — 6 operations per minute, 100 per day — typical for lighting, fan, or pump contactor duty where it cycles a few times per shift, not a high-speed machine.
Clip-on mounting to 35 mm DIN rail with tunnel-type terminals: power circuit accepts up to 1 x 6 mm² rigid or 2 x 2.5 mm² flexible; control circuit takes 2 x 2.5 mm² flexible or 2 x 1.5 mm² rigid. Wire stripping length is 10 mm, tightening torque 0.8 N·m — standard for this class, no special tooling needed. IP20 finger-safe protection (IP40 in modular enclosure per IEC 60529) suits clean, dry panel environments — not washdown or outdoor. Pollution degree 2 means it's rated for non-condensing indoor use only. Standards compliance includes IEC 61095 and EN 61095 for contactors, plus IEC 60947-4 for the AC-1 utilisation category.
No direct pin-compatible alternative exists within the same Acti9 CT40 family at this rating — the A9C15188 is the 2-pole 25 A variant. A different pole count or current rating would require a different order code in the same CT40 series.