Square D BJA260402 - 40 A, 2-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D BJA260402—a 40 A, 2-pole plug-in molded case circuit breaker designed to deliver dependable branch circuit protection inside panelboards and load centers. Built for quick installation and straightforward replacement, it keeps electrical systems safe and up to code with minimal downtime.

• Fast plug-in connection — designed for secure, drop-in installation into compatible panelboards and load centers, making servicing faster and cleaner.
• Thermal-magnetic trip unit — combines thermal and magnetic mechanisms to provide stable, repeatable protection against overcurrent and short circuits across a wide range of loads.
• 2-pole, 40 A configuration — interrupts both hot legs for 240 V circuits, improving safety and meeting common residential, commercial, and light industrial needs.
• OEM-compatible design — engineered to fit and function with matching Square D OEM load centers and panelboards, reducing compatibility concerns during replacement or upgrades.
• Versatile for multiple environments — ideal for homes, small offices, retail spaces, and light industrial panels where reliable protection is essential.
• Reliable performance from a trusted lineage — part of the Square D BJA family, built for consistent protection and long-term reliability.

Typical use scenarios include replacing aging breakers in residential subpanels, expanding light commercial panels, or equipping small industrial control panels where quick swaps and dependable protection matter. This 40 A, 2-pole plug-in breaker is sized to protect branch circuits and prevent damage from short circuits, while its plug-in design minimizes service time when upgrades or maintenance are needed.

Technical snapshot
Manufacturer: Square D
Part Number: BJA260402
Type: Thermal-magnetic molded case circuit breaker
Amperage Rating: 40 A
Number of Poles: 2
Mounting Style: Plug-in
Application: Branch circuit overcurrent and short-circuit protection

When you’re sourcing genuine Square D protection for your panelboards or load centers, this BJA260402 from AmpState combines precise protection with installer-friendly compatibility. Ready to install, it helps you keep circuits protected and downtime to a minimum—order today and ensure your electrical system has the reliable safeguard it needs.