Square D | FAP12040V | Circuit Breaker | 40A | 1-Pole | 12040V

Square D FAP12040V Circuit Breaker — a precise, dependable 40A, 1-Pole solution crafted for maintenance, retrofit, and replacement in compatible Square D panels. When you need a like-for-like replacement that fits your existing setup, this is the part to trust.

Designed to match the exact specifications of your Square D distribution system, this 40-amp, single-pole breaker delivers predictable protection for branch circuits. Its compact, straightforward design makes installation straightforward during panel service or upgrades, helping you restore fault protection with minimal downtime.

Key specifications

• Amperage: 40A
• Poles: 1-Pole
• Voltage: 12040V

What makes this breaker unique

• Exact-fit reference: The part number FAP12040V is your best guide for compatibility, ensuring you don’t guess your way through a retrofit.
• Maintenance-ready: Ideal for replacement in aging panels or during panel upgrades, so you can restore a circuit’s protection without unnecessary changes to the enclosure.
• Reliable compatibility within the Square D ecosystem: Built to align with the design and electrical characteristics of Square D panels, reducing sourcing friction and fit issues.

Who is this for?

• Electricians and technicians performing panel maintenance or upgrades.
• Homeowners or facility managers replacing a blown or degraded 40A, 1-Pole breaker in compatible Square D systems.
• Any project requiring a like-for-like replacement to maintain consistent protection and panel labeling.

Use cases and practical scenarios

• Repairing a tripped 40A circuit in a residential or light commercial panel where a single-pole device is specified.
• Upgrading or restoring a circuit to its original protection level after panel servicing or component aging.
• Replacing a failed breaker during scheduled maintenance to minimize downtime in electrical rooms or workshops.

Notes: Always confirm fit and ratings before ordering. The part number FAP12040V is the most reliable reference for compatibility, and matching it to your panel’s labeling will help ensure a smooth, safe replacement.