Schneider Electric | A9N19826 | Circuit Breaker | 125A | 3-Pole | 400V

Schneider Electric's A9N19826 circuit breaker delivers trusted protection for three‑phase electrical systems. With a 125A service rating and a 3‑pole configuration at 400V, this device is engineered for reliable overcurrent protection in commercial, industrial, and retrofit applications. It’s the right choice when you need a precise, compatible replacement that aligns with Schneider Electric panels and wiring practices.

Why this A9N19826 matters for your project

When maintenance, retrofit, or replacement is on the horizon, selecting the exact part number matters. The A9N19826 is designed to match the original Schneider Electric specifications, helping you preserve system safety, performance, and compliance. By sticking with the official part reference, you reduce guesswork and ensure a seamless fit with compatible enclosures, buses, and mounting arrangements.

Key specifications at a glance

• Amperage: 125A
• Poles: 3-Pole (three‑phase protection)
• Voltage rating: 400V
• Brand/part: Schneider Electric, part number A9N19826

Ideal for

• Maintenance of existing Schneider Electric installations that require a precise 125A, 3‑pole 400V replacement
• Retrofits where a compatible, long‑term protective solution is essential to uptime
• Replacement in commercial or light to medium industrial panels that operate on three‑phase 400V systems

What problems it solves

• Prevents overcurrent damage to wiring and equipment by providing reliable, trackable protection for three‑phase circuits
• Minimizes downtime during outages or faults by ensuring a predictable, manufacturer‑verified trip behavior
• Reduces installation risk with a part number that ensures alignment with existing Schneider Electric components

How it compares to other options (without naming competitors)

Choosing the A9N19826 means opting for a part designed to integrate with Schneider Electric ecosystems, reducing compatibility surprises. Its 125A, 3‑pole, 400V rating targets common three‑phase applications, providing a balanced combination of protection, footprint, and integration with Schneider Electric panels and accessories. This specificity helps you avoid mismatches that can arise with generic breakers, such as incorrect pole count, voltage rating, or amperage—especially in retrofit scenarios where exact fit matters.

Practical tips for installation and ongoing use

• Verify compatibility: Before ordering, confirm that your panel or enclosure expects a 3‑pole, 400V device and that the A9N19826 is the correct Schneider Electric reference for your installation.
• Check fit and ratings: Ensure the bus connections, mounting method, and terminal types align with your existing hardware to avoid installation delays.
• Plan for future upgrades: If you anticipate expanding to higher three‑phase loads, consider how a 125A breaker fits into your long‑term distribution strategy and whether future upgrades might require a higher amperage or different pole configuration.
• Labeling and documentation: Retain the part number A9N19826 in your asset records to simplify future maintenance and spare parts sourcing.

For those maintaining reliable, safe, and compliant electrical systems, the Schneider Electric A9N19826 circuit breaker combines precise compatibility with solid, industry‑standard protection. It’s the deliberate choice for professionals who demand accuracy in replacement parts, straightforward installation, and ongoing system integrity in 400V, three‑phase environments.