Eaton Cutler-Hammer EB3040L 40A 3P 240V Circuit Breaker | AmpState

Meet the Eaton Cutler-Hammer EB3040L—a reliable 3-pole, 40-amp, 240-volt circuit breaker designed to safeguard panelboards, load centers, and electrical distribution networks. Built for retrofit work and maintenance planning, this part number stays consistent, helping technicians avoid compatibility headaches when stocking spares or upgrading systems.

Why choose EB3040L? It’s a genuine Eaton Cutler-Hammer component, engineered to protect multi‑phase circuits with precision and to integrate smoothly into Eaton-based distributions. The 3-pole, 40 A, 240 V rating is perfect for 3‑phase loads common in commercial and light industrial settings, delivering dependable interrupting capacity and predictable trips when faults occur.

Key specifications at a glance

• Amperage: 40 A
• Poles: 3
• Voltage: 240 V
• Type: Circuit Breaker for panelboards, load centers, electrical distribution

Ideal for facilities teams and electrical contractors managing retrofit projects, service upgrades, or inventory with a need for part-number consistency. If you’re replacing an existing Eaton EB3040L or aligning spares across multiple sites, this breaker ensures seamless compatibility with your Eaton ecosystem.

Use cases and benefits

• Retrofit and maintenance planning where the part number must stay the same to avoid rework or re-labeling.
• Protection for three-phase circuits in commercial installations, respecting standard 240 V distribution schemes.
• Reliable protection against overloads and short circuits, reducing downtime and equipment damage.
• Streamlined procurement: available from AmpState to support consistent supply and fit checks.

How it compares to generic options In contrast to generic breakers that may vary in fit and trip characteristics, EB3040L is a purpose-built Eaton component designed to match Eaton panelboard architectures. This reduces the risk of misfits, ensures proper mounting and electrical contact, and simplifies future maintenance by preserving the original design language of your distribution system.

Practical installation and care tips

• Verify your panelboard or load center is rated for 240 V and compatible with a 3-pole breaker of 40 A rating.
• Ensure the trip curve and frame style align with the existing system to maintain protective coordination.
• Install by a qualified electrician following local electrical codes and NEC guidelines; torque terminals per manufacturer specs.
• Keep a consistent inventory of EB3040L parts, especially for retrofit programs, to minimize downtime during service windows.
• When in doubt about compatibility, AmpState offers assistance to confirm fit and ensure the correct part number is used.

With the EB3040L, you’re choosing a trusted, OEM-grade solution that supports dependable circuit protection while making retrofit and maintenance work more predictable and efficient. Ideal for engineers, facility managers, and electricians who value long-term reliability and streamlined sourcing in Eaton-powered electrical systems.