Acti9 xC60 50 A MCB — panel-builder commissioning notes
The C curve means magnetic tripping occurs at 8 x In (±20 %), so the breaker holds through motor inrush and transformer energisation but clears a hard short fast. For a 50 A circuit, that is a magnetic pickup between roughly 320 A and 480 A — typical for general-purpose distribution feeding mixed resistive and light inductive loads. Breaking capacity is 10 kA Icu at 220…240 V AC (50/60 Hz) per IS/IEC 60947-2, with a 15 kA Icu rating at 12…48 V DC and 6 kA Icu at 60 V DC. The standard certifies the breaker for isolation (suitability for isolation: yes) and assigns it utilisation category A — meaning it is not intended for frequent switching of motor loads but for cable and equipment protection in distribution. The IP20 finger-safe enclosure is adequate for enclosed distribution boards; no washdown rating is claimed.
Lifecycle and compliance — current production, tender-ready
The A9N1P50CIN carries a lifecycle stage of current, per the manufacturer's classification. It remains an active catalogue number within the Acti9 range, fully compliant with IS/IEC 60947-2 and tropicalised to IEC 60068-1 (class 2). For tender submissions requiring a traceable, in-production MCB with a published standard, this part meets the documentation threshold without a substitution note.