Schneider Electric | A9N19831 | Circuit Breaker | 125A | 4-Pole | 400V

Schneider Electric A9N19831 Circuit Breaker is a genuine, reliable protection device designed for maintenance, retrofit, and replacement projects where exact specifications matter. With a 125A rating, 4-pole configuration, and a 400V operating capability, this breaker is built to perform in demanding electrical environments while preserving system safety.

• Key specs at a glance — Amperage: 125A, Poles: 4-Pole, Voltage: 400V, Part number: A9N19831.
• Exact compatibility — The part number is the most reliable reference for ensuring a proper fit with panels and assemblies that require this specific configuration.
• Reliable protection for industrial setups — Delivers dependable interruption for overcurrent events, helping safeguard downstream equipment and wiring in 3-phase or multi-line circuits common in commercial and light industrial facilities.
• Effortless retrofit and replacement — Designed to slot into existing installations where matching specs are essential, minimizing downtime and installation issues during upgrades or repairs.
• Versatile for 400V systems — Suitable for applications in regions and installations that operate at 400V, aligning with many industrial distribution networks.

Who this part is ideal for

• Electrical contractors conducting panel retrofits or service replacements who need an exact-spec Schneider Electric component.
• Facilities managers maintaining aging distribution boards that require a genuine A9N19831 breaker for reliable performance.
• System designers integrating robust, standardized protection into new or existing 400V installations.

Use cases and practical considerations

• Replacing a failed breaker in a 3-phase distribution panel where 125A, 4-pole, 400V specifications are required.
• Retrofits that demand a like-for-like Schneider Electric part to maintain system coordination and safety standards.
• Keeping a genuine spare on hand to minimize downtime during routine maintenance or emergency service calls.

Important compatibility note: Before ordering, verify that your equipment requires the A9N19831 specification, including amperage, pole count, and voltage rating. Rely on the part number as the best reference to ensure a correct fit and safe operation.