Square D HLA36040AA 36040A 3-Pole 600 V Circuit Breaker Potential Transformer

Meet the Square D HLA36040AA, a high-performance 3-pole circuit breaker engineered for demanding 600 V electrical environments. Built to protect three-phase systems, this device pairs robust fault interruption with practical potential transformer compatibility, making it a smart choice for protection and measurement-ready installations. Part Number HLA36040AA, it’s designed to integrate into commercial and industrial switchgear, panel boards, and motor control centers with reliability you can count on.

• Three-pole protection for balanced three-phase circuits, ensuring synchronized interruption across all phases.
• 600 V voltage rating suitable for a wide range of industrial power distribution applications.
• Current rating: 36040 A as specified by the official part documentation, delivering dependable interruption performance for high-load environments.
• Part Number: HLA36040AA—a precise component for spec-driven procurement and maintenance workflows.
• Potential transformer compatibility designed to support metering and protection schemes that rely on accurate sensing and measurement signals, reducing wiring complexity and enabling smarter protection strategies.
• Rugged Square D construction built to withstand industrial conditions, with reliable electrical performance over time.

Who benefits from this model? Facilities engineers, maintenance technicians, and electrical contractors working with 3-phase power systems in manufacturing plants, distribution centers, and large commercial buildings will appreciate the combination of solid protective capability and measurement-ready functionality. If your system requires dependable fault interruption at 600 V while coordinating with metering or protection relays through a potential transformer, this device is purpose-built for that role.

Why choose this Square D solution over standard breakers? The HLA36040AA isn’t just about interrupting faults—it’s designed to fit into protection architectures that demand accurate sensing and streamlined integration with PT-based monitoring. The result is quicker fault identification, easier diagnostics, and a cleaner wiring layout in switchgear and panel assemblies.

Practical tips for successful use:

• Verify panel compatibility and mounting arrangements to ensure a secure, code-compliant installation.
• Follow manufacturer guidance for wiring, torque, and clearance to maintain optimal performance and safe operation.
• Leverage potential transformer connections to feed protection relays or metering systems for accurate current measurements and alert signaling.
• Document the part number (HLA36040AA) and current rating during procurement and service records to simplify future maintenance or upgrades.

In short, the Square D HLA36040AA 3-Pole 600 V Circuit Breaker with potential transformer compatibility delivers reliable protection for three-phase power, precision in sensing, and a streamlined path toward smarter electrical protection systems. It’s an ideal choice for those who demand robust interrupting capability, accurate monitoring, and a design tailored to professional, spec-driven installations.