Square D HJA260302 - 30 A, 600 V, 2-Pole Plug-In Circuit Breaker | AmpState

The Square D HJA260302 is a rugged 30A, 600V, 2-pole plug-in molded case circuit breaker designed to protect branches in panelboards and loadcenters with confidence. Built for quick, reliable protection, this device blends seamless plug-in installation with precise thermal-magnetic trip technology to keep circuits safe from overloads and short circuits.

Fast, dependable protection at the snap of a plug

With a fast plug-in connection, the HJA260302 minimizes downtime during installation or replacement. This means fewer service interruptions and quicker commissioning of panelboards in both renovation projects and new builds. The two-pole design ensures both conductors disconnect simultaneously, enhancing safety and simplifying troubleshooting in 2‑pole configurations.

Key benefits that matter in real-world use

• Rapid plug-in installation—efficient electrical work reduces labor time and downtime.
• Thermal-magnetic trip unit—provides stable, repeatable protection by combining thermal overload response with a magnetic trip for instantaneous fault interruption at high fault currents.
• OEM-compatible—specifically designed to pair with matching Square D OEM load centers and panelboards for a clean, code-compliant fit.
• Versatile application—well suited for residential, commercial, and light industrial environments where reliable branch circuit protection is essential.

Technical snapshot

• Manufacturer: Square D
• Part Number: HJA260302
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 30A
• Voltage Rating: 600V
• Number of Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

Upgrade or expand panelboards in commercial spaces, retrofit older electrical systems, or perform routine maintenance in light industrial facilities. The HJA260302 is a natural fit where a dependable, quick-replacing plug-in breaker is needed to protect circuits powering lighting, receptacles, and small equipment loads. Its 600V rating accommodates a wide range of distribution environments, while the 30A capacity supports typical branch circuits without unnecessary nuisance trips.

Why choose this Square D breaker

Choosing the Square D HJA260302 means selecting a component designed around reliable protection and practical installation. The plug-in design minimizes service disruptions, while the thermal-magnetic trip mechanism delivers consistent performance across temperature variations and electrical load conditions. For professionals managing panelboard inventories, this breaker offers predictable behavior, straightforward compatibility with OEM panels, and clear, actionable protection for everyday electrical systems.