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QO340VH - 40Amp Circuit Breaker

  • 40 Amp
  • 22k @ 240VAC
  • 3 Pole
Circuit BreakersSKU: QO340VH

Purchase Options: New In Box

QO340VH - 40Amp Circuit Breaker Description

QO340VH - 40Amp Circuit Breaker

When you need dependable circuit protection for a three-phase electrical system, the QO340VH is built to get the job done. This 40 amp, 3-pole plug-on circuit breaker is designed to help protect electrical circuits from overloads and short circuits while providing a 22kA interrupting rating at 240VAC for applications where higher fault current capacity is required. Its plug-on design makes installation into compatible equipment straightforward, making it a practical choice whether you're replacing an existing breaker or completing a new electrical project. The compact size also helps conserve valuable panel space without sacrificing performance. From commercial buildings to industrial facilities and larger residential installations, the QO340VH is a reliable solution for protecting equipment and keeping electrical systems operating safely.

Key Features and Benefits

  • 40 amp current rating: For branch circuit protection.
  • Three-pole design: For compatible three-phase electrical systems.
  • 22kA interrupting capacity at 240VAC: For applications where higher fault current capacity is required.
  • Plug-on construction: For fast installation in compatible panels.
  • Compact dimensions: Help maximize available panel space.
  • Helps reduce the risk of equipment damage: Caused by overloads and short circuits.
  • Suitable for both replacement and new installation projects.

Technical Specifications

  • Part Number: QO340VH
  • Type: QO-VH
  • Style: Plug-On Circuit Breaker
  • Poles: 3
  • Current Rating: 40 Amps
  • Voltage: 240VAC
  • Interrupting Rating: 22kA @ 240VAC
  • Dimensions:
    • Height: 3.5 in.
    • Width: 2.25 in.
    • Depth: 2.5 in.

Material Compliance and Certifications

  • Manufactured for use: In compatible electrical distribution equipment.
  • Industry Requirements: Designed to meet applicable industry requirements for molded case circuit breakers.
  • Installation Requirements: Installation should follow the National Electrical Code (NEC), local electrical codes, and manufacturer recommendations. Always confirm panel compatibility before installation.

Where It Works Best

  • The QO340VH is a good fit for commercial, industrial, and residential electrical systems that require a 3-pole, 40 amp circuit breaker with a 22kA interrupting rating at 240VAC. It's commonly used to protect HVAC equipment, pumps, lighting circuits, machinery, distribution panels, and other three-phase branch circuits where dependable overcurrent protection is essential.

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. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.

Square D® is a registered trademark of Schneider Electric. Products sold are surplus, used, or refurbished and are NOT supplied by Schneider Electric or its affiliates.

Specifications

  • Depth:2.5
  • Height:3.5
  • Width:2.25
  • Poles:3
  • Amperes:40
  • A.I.C. Rating & Volts:22k @ 240VAC
  • Type:QO-VH
  • Approx Dimensions:2.25"W x 3.50"L x 2.50"D
  • Additional Notes:Plug-On Circuit Breaker

Returns are easy

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

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

Shipping charges are Prepaid and Allowed on UPS Ground orders for all other products on orders over $500.00, again only when shipping within the lower 48 continental United States, provided the product(s) can safely ship UPS Ground.

If the product cannot safely ship via UPS Ground, or is too heavy to ship UPS Ground, then the product will be shipped via freightliner at buyer's expense.

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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