Square D HJA260402 - 40 A, 2-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D HJA260402, a 40 A, 2-pole plug-in molded case circuit breaker engineered to protect your electrical system from overcurrent and short circuits. Built for dependable performance in panelboards and load centers, this unit combines fast installation with precise protection, making it a smart upgrade or replacement for residential, commercial, and light industrial applications.

• Fast plug-in connection: Quick, tool-free installation and easy replacement in compatible Square D panelboards, reducing downtime and simplifying maintenance.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection across temperature variations by combining a bimetallic thermal element with magnetic short-circuit sensing for immediate response to faults.
• 2-pole design for 240V circuits: Simultaneous disconnection of both hot conductors ensures comprehensive protection of multi‑wire branch circuits and equipment powered from shared neutrals.
• 40-Amp rating: Suitable for moderate-load circuits feeding electrical devices, motors, or heating elements where reliable protection is essential.
• Panelboard compatibility: Verified compatibility with matching OEM load centers and panelboards to maintain safe, code-compliant protection schemes.
• Versatile application: Ideal for service panels, subpanels, and control panels in homes, small offices, retail spaces, and light industrial settings.

What this means for you: with the Square D HJA260402, you get a robust, plug-in breaker that not only guards equipment and wiring from damaging faults but also streamlines installation and future service. Its thermal-magnetic technology helps prevent nuisance trips in everyday loads while delivering fast short-circuit interruption when it matters most, helping you maintain uptime and safety across your electrical system.

Technical specifications at a glance

• Manufacturer: Square D
• Part Number: HJA260402
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40A
• Number of Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

For installers and facility managers, this breaker provides a dependable, OEM-compatible solution that helps maintain consistent protection strategies across panelboards and load centers. When you’re updating or stocking panels, the Square D HJA260402 stands out for its combination of quick installation, precise protection, and durable construction—delivering peace of mind for electricians and property owners alike.