Square D HDA36030 - 30 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D HDA36030 — a 30A, 600V, 3-Pole Plug-In Molded Case Circuit Breaker designed to deliver dependable branch circuit protection in panelboards and load centers. Its plug-in design means fast, tool-efficient installation and straightforward replacement, helping minimize downtime during panel maintenance or upgrades.

• Plug-in installation — fast, secure connections that simplify servicing and reduce panel downtime.
• Thermal-magnetic trip unit — provides stable, repeatable protection by automatically adapting to normal operating conditions and fault currents, helping prevent nuisance trips while safeguarding wiring and equipment.
• Three-pole, 600V capability — ideal for three-phase commercial or light industrial circuits, delivering coordinated protection across phase conductors.
• OEM-loadcenter compatibility — engineered to match Square D panelboards and load centers, ensuring proper fit, electrical performance, and long-term reliability.
• Versatile applications — suitable for residential, commercial, and light industrial installations where compact, reliable overcurrent and short-circuit protection is needed.

Technical specifications at a glance

• Manufacturer: Square D
• Part Number: HDA36030
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 30A
• Voltage Rating: 600V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Why choose this model? The HDA36030 is built for real-world panel work, delivering quick upgrades or replacements without sacrificing protection quality. Its thermal-magnetic trip mechanism excels in environments with varying loads—think HVAC systems, lighting banks, small motors, and other three-phase equipment often found in commercial settings. When paired with compatible OEM panelboards, it offers predictable trip characteristics and consistent performance you can rely on during critical moments.

Use cases and practical considerations

• Upgrading aging or damaged breakers in Square D panelboards to restore reliable protection for three-phase circuits.
• Installing in light industrial subsystems where three-phase loads require solid overcurrent protection at 30A.
• Replacing failed plug-in breakers during routine maintenance to minimize panel downtime.
• Project scenarios where a compact, plug-in MCCB solution is preferred for easier servicing and future scalability.

Notes on compatibility and safe operation: verify that the panelboard is rated for 600V and supports plug-in MCCBs of the same family. Use appropriate torque and wiring practices per electrical standards, and ensure the installation aligns with local codes and manufacturer guidelines. The Square D HDA36030 is purpose-built for reliable, three-phase protection in commercial and light industrial environments, offering a practical balance of speed, safety, and performance.