The Schneider Electric A9C20531 is a 1-pole contactor from the Acti9 iCT range, rated 25 A in AC-7A duty and 8.5 A in AC-7B, with a 220 V AC 50 Hz control coil.
The 25 A AC-7A rating covers resistive and lightly inductive loads — think lighting banks or heating elements. The 8.5 A AC-7B rating applies to motor loads like small pumps or fans, where the inrush is higher. Electrical durability is listed per duty cycle: 100,000 cycles at 25 A AC-7A, and 30,000 cycles at 8.5 A AC-7B. Mechanical durability is 1,000,000 cycles. The switching frequency is capped at 100 operations per day — this is a panel contactor, not a high-speed PLC output. The control circuit is maintained-signal type, rated 220 V AC 50 Hz. Inrush power is 15 VA, holding at 1.3 W at 250 V AC. The coil terminals accept up to 2.5 mm² rigid or flexible cable; power terminals take up to 6 mm² rigid. Tightening torque is 0.8 N.m on both control and power circuits. IP20 body protection (IP40 in modular enclosure) means it's suited for enclosed panel use, not washdown environments. Pollution degree 2, operating altitude up to 2000 m, and tropicalisation to 2 levels per EN 60947-4-1 and EN 61095.
Designed to IEC/EN 61095 (household and similar electromechanical contactors) and EN/IEC 60947-4-1 (industrial contactors and motor-starters). The dual-standard coverage means it can be specified in both residential and light industrial control panels without a separate part number.