Square D FA360401212 40A 3P 600V Circuit Breaker, Plug-On | AmpState

The Square D FA360401212 40A 3P 600V Plug-On Circuit Breaker is built for dependable protection in panelboards, load centers, and electrical distribution systems. Engineered for everyday circuit protection, this 3-pole device keeps your electrical infrastructure safe while making replacements and BOM alignment straightforward for original part numbers.

Key specifications

• Part number: FA360401212
• Brand: Square D
• Amperage: 40 A
• Poles: 3
• Voltage rating: 600V
• Type: Plug-On circuit breaker
• Application: Circuit protection in panelboards, load centers, and electrical distribution

What makes this FA360401212 stand out

• Plug-On convenience: The plug-on design enables fast, secure mounting into compatible Square D panelboards and load centers, reducing installation time and simplifying field replacements.
• Reliable protection for 3-phase circuits: With 40 A capacity across three poles, it safeguards multi-wire or three-phase distributions without compromising performance.
• Original-part alignment: Ideal for replacement projects and stocking spares to keep your BOM aligned to the original part number, ensuring compatibility with existing installations.
• Availability through AmpState: Ready to ship, with support to confirm fit when you’re matching part numbers for a precise upgrade or repair.

Who is this ideal for?

• Electrical contractors handling panelboard updates and maintenance jobs
• Facilities managers and maintenance teams needing reliable spares for critical distribution systems
• Distributors stocking Square D parts to minimize downtime on replacement projects

Use cases and practical insights

• Replacement of a blown or tripped 3P 40A circuit breaker in existing Square D installations without altering the original BOM.
• Stocking up spare FA360401212 units to ensure quick turnarounds on service calls or planned shutdowns.
• Maintenance planning for electrical distributions where consistent, compatible components are essential for uptime.

Installation and compatibility tips

• Verify that your panelboard or load center supports a 3-pole, 40 A, 600V plug-on breaker in the FA-series family.
• Power down the distribution system and follow your site safety procedures before replacing any circuit breaker.
• Handle the breaker by its body, not the terminals, and ensure a clean, seated connection in the bus for reliable operation.
• If you’re unsure about fit, reach out—we can help confirm compatibility and ensure the part matches your original BOM requirements.

Tap into the trusted reliability of Square D with the FA360401212, available from AmpState. Whether you’re executing a precise BOM alignment, stocking essential spares, or performing a targeted replacement, this plug-on 40 A, 3-pole, 600V circuit breaker delivers predictable protection and straightforward installation for your electrical distribution needs.