Schneider Electric | PJA36040U31A | Circuit Breaker | 400A | 3-Pole | 600V | Plug-In

Meet the Schneider Electric PJA36040U31A, a purpose-built plug-in circuit breaker designed for demanding power-distribution environments. This 400A, 3-pole unit delivers reliable protection for three-phase systems, rated up to 600V, and is crafted to integrate seamlessly into compatible Schneider Electric panels for quick, downtime-minimizing maintenance, retrofit, or replacement projects.

• Amperage: 400A
• Poles: 3-Pole
• Voltage rating: 600V
• Style: Plug-In

Why choose the PJA36040U31A for your panel?

Exact compatibility hinges on the part number. PJA36040U31A is the definitive reference for matching Schneider Electric breakers to corresponding panelboards and accessories. Using the genuine part ensures consistent electrical characteristics, fit, and performance, reducing installation risk and ensuring you maintain the protection profile your system relies on.

Ideal use cases

Designed for scenarios where reliability and fast service matter most:

• Maintenance and service calls in industrial facilities with high-current feeders
• Retrofits to modernize existing panels while preserving original protection schemes
• Replacement of aging or failed breakers in Schneider Electric ecosystems

What practical value does it bring?

• Plug-in installation minimizes downtime by simplifying swap-outs and reduces field wiring work.
• Three-phase protection aligns with typical industrial and commercial power layouts, helping maintain balanced loads and stable operation.
• High-current capability supports large equipment feeds without compromising safety margins.
• 600V rating covers a broad range of industrial applications, from manufacturing lines to data-center support systems.
• Official Schneider Electric part provides confidence in performance, lifecycle support, and future service compatibility.

Guidance for purchase and installation

Before ordering, confirm fit and ratings against your panel’s specifications. The part number PJA36040U31A is the most reliable reference for compatibility. If your system requires a plug-in, 3-pole, 600V, 400A solution, this unit is the appropriate match.

Tips for optimal results

• Verify that your panel accepts plug-in breakers from the PJA series and that a 400A rating matches your load calculation.
• Check the panel model and bus-bar design to ensure seamless installation without modification.
• Store spare breakers in a clean, dry environment to preserve performance and ease future replacements.