Eaton QBHW3045H - 45 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Eaton QBHW3045H — a 45A, 240V, 3-pole bolt-on molded case circuit breaker designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for durability and reliable performance, it’s the right choice when you need solid protection that stands up to real-world use in homes, businesses, and light industrial settings.

• Secure bolt-on mounting: delivers a rigid, vibration-resistant bus connection that stays firmly in place, even in installations subject to movement or equipment vibration.
• Thermal-magnetic trip unit: combines precise thermal protection with fast magnetic trip action for repeatable protection against overloads and sudden short circuits.
• OEM-compatible design: engineered to pair with matching Eaton OEM loadcenters and panelboards, simplifying upgrades, replacements, and service work.
• Versatile application: ideal for residential panel upgrades, commercial distribution, and light industrial electrical loads that require reliable 3-pole protection at 45A and 240V.

Why this matters: A dedicated 45A, 240V three-pole breaker provides targeted protection for multi-branch circuits or three-phase distribution scenarios in a single device, helping protect downstream equipment and reduce the risk of fire or equipment damage.

Who it’s for: electricians, facilities managers, and maintenance teams installing or upgrading panelboards and loadcenters who need a bolt-on solution with stable, predictable trip performance.

Technical snapshot:

• Manufacturer: Eaton
• Part Number: QBHW3045H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 45A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases

• Upgrading a residential service panel to provide reliable protection for multiple circuits or to feed a subpanel with a 45A, 240V protection device.
• Replacing an aging breaker in a commercial panelboard where a secure bolt-on connection minimizes vibration and wear over time.
• Installing in light industrial distributions to guard motors, heaters, and other high-current loads with consistent thermal-magnetic protection.

With the Eaton QBHW3045H, you gain a dependable, easy-to-install solution that delivers precise protection characteristics, a rugged connection, and compatibility with Eaton’s panelboard ecosystem — helping you keep power distribution safe, compliant, and ready for the next project.