QBHW2040 - 40 Amp Circuit Breaker

QBHW2040 Quicklag Circuit Breaker - 40 Amp, 2-Pole

When you’re working with electrical systems, the last thing you want to worry about is whether your breaker can handle the job. That’s where the Eaton QBHW2040 Quicklag Circuit Breaker comes in. Built for 40-amp, two-pole applications, it’s made to keep your systems safe by cutting power quickly in the event of overloads or short circuits. With a 22 kAIC interrupt rating, it’s strong enough for setups where high fault currents could otherwise cause big problems. Installation is straightforward too — the bolt-on design makes for a tight, secure fit that you can count on. Whether you’re outfitting a commercial building, keeping an HVAC system running smoothly, or maintaining an industrial setup, this breaker is built to give you reliable protection without the guesswork.

Key Features and Benefits

• Safety First – Handles high fault currents up to 22 kAIC, giving you the protection you need in demanding environments.
• Two-Pole Protection – Safeguards both sides of the circuit, perfect for larger systems or critical equipment.
• Smart Response – Thermal-magnetic trip technology reacts quickly to both overloads and short circuits, helping prevent damage.
• Easy Install – Bolt-on mounting means a secure connection without the hassle.
• Versatile Use – HACR rated, so it’s ideal for HVAC systems along with industrial and commercial applications.

Technical Specifications

• Amperage Rating: 40A
• Voltage Rating: 120/240V
• Interrupt Rating: 22 kAIC
• Poles: 2
• Trip Type: Thermal-Magnetic
• Mounting Method: Bolt-on
• Dimensions: 2.9" L x 2.9" H x 2" W
• Weight: 0.65 lb

Material Compliance and Certifications

• UL Listed and CSA Certified – Tested and approved to meet strict safety standards.
• Industry-Standard Compliance – Built to deliver safe, consistent performance.
• HACR Rated – Ready for use in Heating, Air Conditioning, and Refrigeration systems.

Where It Works Best

• The QBHW2040 is a great fit for industrial facilities, commercial buildings, and HVAC systems where reliable circuit protection is non-negotiable. If you’re managing heavy machinery, large electrical loads, or equipment that simply can’t afford downtime, this breaker is designed to keep things running smoothly. It gives you the peace of mind that your system is protected, so you can focus on the job at hand.