The Schneider Electric A9N4P32BIN is a 4-pole miniature circuit-breaker from the Acti9 xC60 range, rated 32 A with a B-curve trip characteristic. The thermal-magnetic trip unit provides overcurrent and short-circuit protection for distribution circuits per IS/IEC 60947-2, utilisation category A. Breaking capacity is 10 kA Icn at 380–415 V AC, 50/60 Hz, and 6 kA Icu at 220–250 V DC — sufficient for most commercial and light industrial panelboards where the upstream fault level is within these limits. The B-curve (magnetic trip at 4 x In ±20%) suits resistive and general-purpose loads where nuisance tripping from inrush is not a concern.
The device is suitable for isolation per the standard, and earth-leakage protection requires a separate block — not integrated. IP20 finger protection is provided for the front face; the terminals are accessible only with the panel door closed.
The 4-pole body measures 85 mm high, 72 mm wide, and 77.5 mm deep — account for the toggle throw and cable bending radius when sizing the enclosure depth. The toggle provides local ON/OFF indication. For a 4-pole breaker at 32 A, derating per the manufacturer's thermal curve should be applied when the ambient temperature exceeds 40 °C or when multiple breakers are ganged without spacing — the 10,000-cycle electrical endurance and 20,000-cycle mechanical endurance assume standard installation conditions.
Sourcing posture
For volume purchases or framework agreements, the part's current lifecycle status and broad compliance (IS/IEC 60947-2, pollution degree 3, overvoltage category IV) support straightforward specification into new or replacement distribution boards.