Eaton EHD3100K - 100 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Eaton EHD3100K is a 100A, 480V, three-pole bolt-on molded case circuit breaker designed to deliver dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays tight under demanding service conditions.
• Thermal-magnetic trip unit combines thermal overload and magnetic short-circuit protection for stable, repeatable performance across temperature swings and fault currents.
• OEM-compatible design ensures a precise fit with matching Eaton panelboards and load centers, streamlining replacements and upgrades.
• Versatile for multiple settings ideal for residential, commercial, and light industrial applications where reliable protection and easy installation matter.

Key specifications at a glance

• Manufacturer: Eaton
• Part Number: EHD3100K
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100A
• Voltage Rating: 480V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why it matters in real-world installations

In panelboards and load centers that endure vibration or flexing panels, a bolt-on connection reduces the risk of loose bus bars and intermittent trips. The three-pole 480V configuration is well-suited to three-phase electrical systems common in commercial and light industrial environments, while the 100A rating provides targeted protection for upstream feeders and branch circuits without unnecessary disruptions. The integrated thermal-magnetic trip delivers predictable response to both overloads and short circuits, helping protect downstream equipment and extend service life.

Who benefits most

Electrical contractors performing panel upgrades or retrofit installations, facility managers maintaining distributed power in small to mid-size buildings, and installers working in residential, commercial, or light industrial projects that require a robust, field-installable breaker with proven OEM compatibility.

Practical considerations and tips

• Confirm compatibility with your existing Eaton panelboard or load center to ensure seamless operation and coordinated protection.
• Use in environments where vibration resistance is important to maintain a solid, long-lasting connection.
• Rely on the thermal-magnetic trip for dependable protection across typical temperature ranges and fault conditions encountered in everyday installations.