Eaton QBHW3040H - 40 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton QBHW3040H is a robust bolt-on molded‑case circuit breaker engineered to deliver dependable branch‑circuit protection for panelboards and load centers. With a 40A rating at 240V and a 3‑pole configuration, this unit is built to handle everyday demand in residential, commercial, and light industrial environments while maintaining consistent protection performance.

• Secure bolt‑on mounting: provides a rigid, vibration‑resistant bus connection that stays tight through motor starts and routine panel activity, reducing the risk of loose connections and nuisance trips.
• Thermal‑magnetic trip unit: integrates overload and short‑circuit protection in a single mechanism, delivering stable, repeatable trips across temperature changes and varying load conditions.
• OEM‑compatible design: designed to drop into matching Eaton loadcenters and panelboards, streamlining installation and ensuring reliable coordination with existing hardware.
• Three‑pole, 240V protection: ideal for three‑phase circuits or multi‑wire branch circuits in appropriate panel configurations, providing comprehensive protection across all relevant conductors.
• Versatile applications: suitable for a wide range of settings—from home electrical panels to light commercial equipment and small industrial installations—where dependable overcurrent and short‑circuit protection matters most.

Technical specifications

• Manufacturer: Eaton
• Part Number: QBHW3040H
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage Rating: 40A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt‑on
• Application: Branch circuit overcurrent and short‑circuit protection

Why choose this breaker from AmpState: it’s purpose‑built to upgrade or replace a failing 3‑pole, 40A, 240V bolt‑on unit with a design that emphasizes a secure connection, consistent protection, and straightforward compatibility with Eaton panelboards. If your panel calls for a bolt‑on, molded‑case solution that you can trust in demanding environments, the QBHW3040H is a precise fit.

Practical usage notes

• Verify panelboard compatibility with Eaton bolt‑on breakers and confirm the 3‑pole, 240V configuration matches your setup.
• When planning replacement, align the amperage, pole count, and mounting style with the existing protective scheme to maintain proper coordination.
• Follow standard electrical safety practices during installation, ensuring power is off and all connections are secure before commissioning.