Square D HJA260401 - 40 A, 2-Pole Plug-In Circuit Breaker | AmpState

Introducing the Square D HJA260401 — a 40 A, 2-pole plug-in molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection for panelboards and loadcenters. With a fast plug-in connection and a robust thermal-magnetic trip unit, this breaker keeps electrical systems running smoothly with precise, repeatable protection.

• Fast plug-in connection: Simplifies installation and replacement, minimizing downtime during panel service or upgrades.
• Thermal-magnetic trip unit: Provides stable, repeatable protection by responding to both overloads and short circuits for reliable circuit safety.
• OEM-compatible: Designed to fit and work with matching square D OEM loadcenters and panelboards, ensuring proper operation within existing systems.
• Ideal for multiple environments: Suitable for residential, commercial, and light industrial applications where dependable protection is essential.

Key specifications at a glance

• Manufacturer: Square D
• Part Number: HJA260401
• 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

Why this breaker stands out

In electrical panels, reliability is non-negotiable. The Square D HJA260401 is purpose-built to handle daily loads while protecting wiring and devices from damage due to overloads and faults. The plug-in design reduces service time during installation or replacement, and the thermal-magnetic mechanism delivers quick, predictable tripping characteristics, so you can trust it to intervene when needed and stay out of the way during normal operation.

Who benefits most

This breaker is an excellent choice for professionals and DIY installers working on:

• Residential electrical panels upgrading or replacing aging protection devices
• Commercial panel installations requiring reliable branch circuit protection
• Light industrial setups where compact, quick-install protection is valued

Practical considerations and use cases

• Installing as a dedicated 40 A, 2-pole protection device for circuits that require strong current handling with clean, fast disconnection on fault conditions.
• Pairing with matching OEM loadcenters and panelboards to maintain system integrity and consistent protection performance.
• Using in applications where minimize downtime is important—the plug-in design supports swift replacements without extensive panel disassembly.

With the Square D HJA260401, you get a purpose-built solution that combines quick installation, precise protection, and compatibility with standard panelboard architectures. It’s a dependable choice for safeguarding electrical circuits across a range of settings while simplifying service and upgrades.