Eaton HFD2040 - 40 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Eaton HFD2040 is a 40A, 600V, 2-pole bolt-on molded case circuit breaker engineered for dependable branch circuit protection in panelboards and loadcenters. Built to stand up to daily electrical demands in residential, commercial, and light industrial environments, this breaker delivers reliable protection when it matters most.

Why this design stands out in real-world installations:

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection. In spaces with equipment vibration or where panel enclosures see frequent door openings and door closures, this mounting method maintains a solid, low-mistance connection that stays put over time.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance. The thermal element handles gradual heating from normal loads, while the magnetic element responds quickly to high-mault fault currents, helping prevent arc faults and reducing nuisance trips on startup surges.
• 2-pole design, 40A rating, 600V maximum supports standard 2-wire circuits and higher-voltage applications common in commercial and light-industrial gear feeds, while protecting against overcurrent and short circuits.
• OEM-compatible compatibility works with matching OEM loadcenters and panelboards, making replacements, expansions, or upgrades straightforward without modifying bus connections or enclosures.
• Versatile application across sectors ideal for protecting feeders, branch circuits, and critical equipment in homes, offices, retail spaces, and light manufacturing lines.

Key use cases and practical benefits:

• Upgrade or retrofit a panelboard in a small office building to ensure reliable protection for a 40A lighting and receptacle circuit or a dedicated equipment feeder.
• Protect HVAC subsystems, pumps, and motor-driven loads in light commercial spaces where consistent thermal-magnetic performance reduces nuisance trips during normal operation.
• Install in new residential or commercial projects that require robust, standardized protection for circuits up to 40 amps and up to 600V, ensuring compatibility with common OEM panel configurations.
• Facilitate quick, dependable maintenance with a bolt-on format that supports solid electrical contact and ease of replacement when panel maintenance is needed.

Technical snapshot

• Manufacturer: Eaton
• Part Number: HFD2040
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40A
• Voltage Rating:
600V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

With the Eaton HFD2040, you’re choosing a purpose-built solution that combines rugged mechanical integrity with precise, reliable protection. It’s a practical, standards-aligned choice for technicians and facilities managers who value consistent performance, ease of installation, and seamless integration with existing panel systems.