Square D HJA36025 - 25 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

The Square D HJA36025 is a 25A, 600V, 3-pole plug-in molded case circuit breaker designed to shield your electrical system from overloads and short circuits. Built for quick installation and effortless swaps, this unit snaps into compatible panelboards and load centers, delivering dependable branch circuit protection where reliability matters most.

Why this 3-pole plug-in breaker stands out

• Fast plug-in connection for rapid installation and streamlined replacements—minimizing downtime during upgrades or service.
• Thermal-magnetic trip unit delivers stable, repeatable protection characteristics against overcurrent and short-circuit events, helping safeguard wiring and equipment.
• OEM-compatible designed to work with matching Square D panelboards and load centers for a seamless, code-compliant fit.
• Versatile application suitable for residential, commercial, and light industrial environments where reliable three-phase protection is needed.

Technical snapshot

• Manufacturer: Square D
• Part Number: HJA36025
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 25A
• Voltage Rating: 600V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases and installation scenarios

• Upgrading or stocking spare breakers in service panels and load centers that use plug-in MCCB designs from Square D.
• Protecting 3-phase feeders in small commercial spaces, light industrial equipment, or HVAC controllers where 25A, 600V protection is appropriate.
• Replacing aging or failed plug-in breakers to restore dependable protection without rewiring or panel modification.
• Performing panel maintenance in environments where quick, tool-friendly plug-in installation reduces downtime and labor costs.

How this breaker supports safer, more reliable electrical systems

• By combining a fast plug-in mounting with a thermal-magnetic trip, it delivers prompt, predictable responses to overloads and short circuits, helping prevent insulation damage and equipment failure.
• The 3-pole configuration provides robust three-phase protection for balanced loads and motors, while the 25A rating protects downstream wiring from overcurrent without unnecessarily limiting service capacity.
• Compatibility with OEM load centers ensures a clean fit, preserving panel labeling, integrity, and code alignment during upgrades or maintenance.