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QBHW2040S - 40 Amp Circuit Breaker

  • 40 Amp
  • 22k @ 120/240VAC
  • 2 Pole
Circuit BreakersSKU: QBHW2040S

Purchase Options: Brand New

QBHW2040S - 40 Amp Circuit Breaker Description

QBHW2040S - 40 Amp Circuit Breaker

Keep your electrical systems protected with the Eaton QBHW2040S, a two‑pole thermal‑magnetic breaker engineered for dependable performance in industrial and commercial settings. Built with a bolt‑on design and capable of handling 120V, 208V, and 240V loads, this circuit breaker is ideal when safety, efficiency, and durability matter. With a 22 kAIC interrupting rating and shunt‑trip option, it delivers solid protection against overloads and faults while allowing for controlled remote shutdowns when needed.

Key Features and Benefits

  • Flexible Voltage Compatibility: Works flawlessly on 120V, 208V, and 240V AC systems, giving you the freedom to use it across diverse applications without swapping equipment. marselectric.com+2rspsupply.com+2
  • Strong Fault Current Resistance: Rated for 22 kAIC, meaning it can safely interrupt high fault currents and reduce the risk of damage or threat to equipment. rspsupply.com+2Mouser Electronics+2
  • Thermal‑Magnetic Trip Protection: Offers both thermal protection for long‑term overcurrent and magnetic protection for instant response to short circuits. marselectric.com+1
  • Shunt‑Trip Capability: Enables remote disconnection when integrated with ancillary control systems, improving safety in emergency or automated shutdown scenarios. marselectric.com+1
  • Bolt‑On Mounting: Simple installation due to its bolt‑on style, giving electrical professionals a fast setup with secure, stable mounting. rspsupply.com+1

Technical Specifications

  • Model: QBHW2040S
  • Amperage Rating: 40 A rspsupply.com+1
  • Poles: 2‑Pole marselectric.com+1
  • Voltage Rating: 120V / 208V / 240V AC marselectric.com+2rspsupply.com+2
  • Interrupting Capacity: 22 kAIC rspsupply.com+1
  • Trip Type: Thermal‑Magnetic with Shunt‑Trip option marselectric.com+1
  • Mounting Method: Bolt‑On rspsupply.com+1
  • Physical Size / Weight: Approx. 1 in width × 1 in height × 1 in depth; about 1 lb (exact dimensions from manufacturers) rspsupply.com+1

Material Compliance and Certifications

  • UL Listed & CSA Certified: Complies with North American safety standards, ensuring quality manufacturing and reliable operation. rspsupply.com+1
  • HACR‑Rated: Approved for use with heating, air conditioning, and refrigeration equipment, making this breaker appropriate for HVAC circuits and related systems. rspsupply.com+1
  • Non‑Interchangeable Design: Ensures the breaker cannot be swapped with non‑compatible parts, maintaining safety and compliance. marselectric.com+1

Suitability

  • In industrial plants and manufacturing facilities where multiple machines or heavy loads operate and demand precise protection against overloads and short circuits.
  • In commercial buildings such as office complexes, retail spaces, or warehouses, especially on HVAC circuits or main feed runs needing high interrupting capacity.
  • When upgrading older panels or replacing service entrance devices where bolt‑on mounting saves installation time and effort.
  • In systems that require remote trip/shutdown capability—such as safety interlocks, emergency shutdown circuits, or automated control systems.


Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. All trademarks and registered trademarks are the property of their respective owners.

Specifications

  • Width:3.0
  • Height:3.41
  • Depth:2.92
  • Poles:2
  • Amperes:40
  • A.I.C. Rating & Volts:22k @ 120/240VAC
  • Type:QBHW
  • Approx Dimensions:3.00"W x 3.41"L x 2.92"D
  • Additional Notes:40°C, Quicklag HACR rated, Bolt-on Thermal Magnetic Circuit Breaker with 120Volts A.C. Shunt Trip Device

Returns are easy

You may return unused items within 30 days of delivery for a full refund.

FREE shipping on breaker orders over $100 and all other items with orders over $500.

CIRCUIT BREAKER SUPERSTORE® offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

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In rare circumstances, CIRCUIT BREAKER SUPERSTORE® may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.

CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).

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