Schneider Electric | A9N19818 | Circuit Breaker | 100A | 3-Pole | 400V

Schneider Electric A9N19818 Circuit Breaker delivers dependable overcurrent protection for 3-phase power systems. With a 100 A rating, a 3-pole configuration, and a 400 V operating envelope, this device is designed for retrofits, maintenance, and replacement in compatible distribution panels. The part number A9N19818 is your most reliable reference for ensuring a precise fit within the Schneider Electric A9N family.

Key specifications

• Amperage: 100 A
• Poles: 3-Pole
• Voltage: 400 V
• Reference: A9N19818 (best compatibility reference)

Ideal applications

Designed for environments where robust protection of 3-phase loads is essential—industrial facilities, commercial electrical rooms, and data centers. It’s a trusted choice for technicians performing panel upgrades, equipment retrofits, or part replacements in systems that operate on 400 V three-phase networks.

Why this Schneider Electric breaker stands out

• Exact fit for panels that accept the A9N-series breakers, ensuring reliable alignment with existing buswork and enclosure interfaces.
• Optimized for retrofit and replacement scenarios, reducing downtime and simplifying refurbishments in aging electrical infrastructure.
• Provides dependable protection for 3-phase circuits up to 100 A, helping guard against overloads and short circuits in demanding environments.
• Part of Schneider Electric’s ecosystem, offering consistent compatibility with related components and ongoing access to spare parts and support.

Compatibility and installation notes

Before ordering, confirm that the fit and ratings align with your panel requirements. Use the part number A9N19818 as the primary reference to ensure compatibility within Schneider Electric’s A9N series. For best results, follow standard electrical safety practices and have a qualified electrician verify that the system is within a 400 V, 3-phase configuration before installation.