Eaton HFD3040 - 40A, 600VAC, 3-Pole, Circuit Breaker

The Eaton HFD3040 40A, 600VAC, 3-Pole Circuit Breaker is engineered to safeguard three-phase systems in demanding environments. With a 40-amp rating and a maximum of 600V AC, this breaker delivers dependable overcurrent protection while streamlining panel layout and safety in industrial, commercial, and OEM applications.

Key specifications

• Current rating: 40A
• Voltage rating: 600VAC
• Poles: 3-Pole
• Breaker type: Circuit Breaker

Why this 3-pole design matters

The three-pole configuration ensures synchronized disconnection across all phases, enhancing protection for motors, drives, and other 3-phase equipment. This reduces the risk of phase imbalances and provides a safer, more reliable shutdown during fault conditions. Built to endure industrial duty, the HFD3040 is ready for installation in a wide range of distribution and control environments.

Ideal applications

• Panelboards and distribution panels in manufacturing and commercial facilities
• Switchboards and motor control centers where compact, multi-phase protection is essential
• OEM equipment where reliable 3-phase overcurrent protection is required

Unique value you’ll notice

Beyond basic specs, the Eaton HFD3040 integrates seamlessly into systems that demand consistent protection and straightforward integration. Its 3-Pole configuration simplifies wiring, coordination, and safety procedures in three-phase environments, helping you maintain uptime and protect downstream equipment without introducing extra components or complexity.

Practical considerations and tips

• Ensure installation is compatible with standard 3-phase bus architectures and mounting arrangements in your panel or MCC.
• Use in applications where a clear, orderly shutdown of all phases is required for safe maintenance and downtime minimization.
• Coordinate with your overall protection scheme to maintain proper selective coordination and fault clearance in the event of an overload or short circuit.