Square D HJA261004 - 100 A, 2-Pole Plug-In Circuit Breaker | AmpState

Introducing the Square D HJA261004, a robust 100 A, 2-pole plug-in molded case circuit breaker designed to protect your panelboards and load centers from overcurrent and short circuits. Built for quick, reliable upgrades, this plug-in breaker delivers dependable branch circuit protection with a straightforward installation path, making it a smart choice for both new setups and panel maintenance.

• Fast plug-in connection for rapid installation and easy replacement in compatible panelboards and load centers, minimizing downtime during upgrades or servicing.
• Thermal-magnetic trip unit provides stable, repeatable protection by responding to both overloads (thermal) and short circuits (magnetic), helping to prevent damage to wiring and connected devices.
• 2-pole, 100 A design protects two hot conductors, making it suitable for residential panels, light commercial subpanels, and other two-pole protection applications.
• OEM-compatible ensures compatibility with matching Square D OEM load centers and panelboards, delivering proper fit, coordination, and reliable performance.
• Versatile application ideal for branch circuit protection in homes, small offices, and light industrial environments where quick replacement and dependable protection matter.

Technical specifications at a glance

• Manufacturer: Square D
• Part Number: HJA261004
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Number of Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Who this is for and practical use

This 100 A, 2-pole plug-in breaker is ideal for electricians and facility managers looking to maintain clean, reliable protection in residential service panels, subpanels, and light commercial distribution boards. If you’re upgrading an aging panel, performing routine maintenance, or stocking replacement parts for mixed or OEM-specific systems, the HJA261004 offers a straightforward, OEM-aligned solution that reduces installation complexity and ensures consistent protection performance.

Tips for optimal results

• Always verify the breaker is compatible with your specific load center or panelboard before installation.
• Use the plug-in design to minimize downtime during replacement—disconnect power and snap the breaker into place following the panel’s guidelines.
• Pair with correctly rated conductors and protective devices to maintain system safety and electrical code compliance.
• Store spare units in a controlled environment to preserve internal trip mechanisms and lubrication for long-term reliability.