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Square D Bolt On Circuit Breaker, 40 Amps, Number of Poles: 2, 120/240VAC AC Voltage Rating - QOB240
Max. AIR Rating 10kA at 120/240V AC
Square D Bolt On Circuit Breaker, 40 Amps, Number of Poles: 2, 120/240VAC AC Voltage Rating - QOB240
Item #: 85053367

Square D Bolt On Circuit Breaker, 40 Amps, Number of Poles: 2, 120/240VAC AC Voltage Rating - QOB240

Item #: 85053367

GMD 3981

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Max. AIR Rating 10kA at 120/240V AC
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

High Amperage
With a robust 40 amp capacity, this breaker ensures reliable protection for high-demand circuits, making it a suitable choice for both residential and commercial applications.
Dual Poles
Featuring a dual-pole design, this breaker provides versatile 120/240VAC compatibility, ideal for various electrical setups and enhancing its overall adaptability in different installations.
Bolt-On Design
The bolt-on installation method offers superior stability and safety, minimizing the risk of accidental disconnection while ensuring a secure fit within the panel for long-term reliability.

Product Details

Shop Square D Bolt On Circuit Breaker, 40 Amps, Number of Poles: 2, 120/240VAC AC Voltage Rating - QOB240 online at a best price in The Gambia. B07KT6L99B
Brand NameSquare D
ModelBQD240
ManufacturerSquare D
Item Weight0.01 Ounces (0.28 grams)
Unit Count1.0 Count
Current Rating40 Amps
Circuit Breaker TypeStandard
Mounting TypeBolt-On Mount
Number of Poles2
Voltage240 Volts
Item Dimensions D x W x H2.91"D x 1.5"W x 2.91"H (7.4 x 3.8 x 7.4 cm)
BrandSquare D
Product Dimensions (L x W x H)2.91"D x 1.5"W x 2.91"H (7.4 x 3.8 x 7.4 cm)

Who Should Buy?

Suitable For
  • Residential Users

    Ideal for homeowners needing a reliable circuit breaker for standard electrical systems and appliance protection.

  • Electricians

    Perfect for electricians requiring durable, efficient breakers for various residential and commercial electrical installations.

  • DIY Enthusiasts

    Great choice for DIYers seeking to upgrade or replace circuit breakers in their home projects safely.

Not Suitable For
  • High Voltage Applications

    Not suitable for industrial settings or high voltage applications requiring higher amperage or specialized circuit breakers.

Product Description

Square D Bolt On Circuit Breaker, 40 Amps, Number of Poles: 2, 120/240VAC AC Voltage Rating - QOB240

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Customer Questions & Answers

  • Question: What is the purpose of the Square D Bolt On Circuit Breaker, 40 Amps?

    Answer: The Square D Bolt On Circuit Breaker operates as a protective device in electrical panels to prevent overloads and short circuits. With a 40 amp capacity, it effectively handles significant electrical loads, ideal for residential or commercial electrical systems. Using a bolt-on design provides a secure connection that enhances stability and reduces the risk of arcing, making it an excellent choice for applications requiring dependable circuit protection.
  • Question: How do I install the Square D QOB240 circuit breaker?

    Answer: Installing the Square D QOB240 requires turning off the main power supply to avoid electrical hazards. Once safe, secure the breaker within your panel by bolting it onto the bus bars. It's essential to follow the manufacturer's installation instructions carefully and confirm proper compatibility with your panel system. This breaker is suitable for a dual-pole application, ensuring reliable performance for 120/240VAC circuits in your home or business setup.
  • Question: Can the Square D Bolt On Circuit Breaker be used for home appliances?

    Answer: Yes, the Square D Bolt On Circuit Breaker is ideal for home appliances and machinery that require a considerable amount of power. With its 40 amp capacity, it can support equipment such as HVAC systems, electric water heaters, or circuits that power multiple appliances. It ensures efficient protection against current fluctuations, thereby extending the life of your appliances and minimizing potential damage caused by overload situations.
  • Question: What are the advantages of using a bolt-on circuit breaker like the QOB240?

    Answer: A bolt-on circuit breaker, like the QOB240, offers increased stability and reliability due to its secure installation method. This design minimizes arcing and provides enhanced conductivity, making it more efficient for handling high-load applications. Additionally, the dual-pole configuration allows for easy control of 120/240VAC systems, making it a versatile option for various electrical installations in both residential and commercial settings.
  • Question: Is the Square D QOB240 compatible with different brands of electrical panels?

    Answer: The Square D QOB240 is specifically designed to work with Square D panels. Using this circuit breaker in non-compatible panels can result in safety hazards and malfunctions. Always check compatibility with panel brands to ensure optimal performance and safety compliance. For custom installations or unique applications, consult with an electrician to select the right breaker that matches your system's specifications.
  • Question: What features should I look for in a circuit breaker?

    Answer: When choosing a circuit breaker, key features include ampere rating, voltage compatibility, the number of poles, and installation type. The ampere rating, such as the 40 amps in the QOB240, indicates the maximum load it can handle. Consider voltage ratings compatible with your systems, such as the 120/240VAC for this model. Additionally, look for a breaker with reliable thermal and magnetic trip mechanisms to ensure effective protection against overloads and short circuits.
  • Question: What types of circuits can the Square D QOB240 be used for?

    Answer: The Square D QOB240 is well-suited for various circuits, particularly in residential, commercial, and industrial applications. Its dual-pole design and 40-amp capacity make it ideal for circuits powering large appliances, including air conditioning units, electric heaters, or workshops with significant power needs. It's also beneficial for creating dedicated circuits that lower the risk of overloads while ensuring efficient energy management in high-demand environments.
  • Question: How can I troubleshoot issues with my Square D QOB240 circuit breaker?

    Answer: If you encounter issues with your Square D QOB240 circuit breaker, start by checking for a tripped breaker or signs of an overload. You can reset the breaker if it has tripped due to temporary surges. If the breaker keeps tripping, inspect the connected circuits for potential short circuits or overloaded wiring. If problems persist, it's advisable to consult a qualified electrician who can diagnose the issue safely and accurately.
  • Question: Where can I buy Square D Bolt On Circuit Breaker, 40 Amps, Number of Poles: 2, 120240VAC?

    Answer: You can buy the Square D Bolt On Circuit Breaker, 40 Amps, Number of Poles: 2, 120240VAC from Ubuy. It provides a wide selection of electrical components, including this circuit breaker, ensuring you can find the right products for your electrical needs. Ubuy is known for delivering quality and reliable options, making it a convenient choice for your purchase.
  • Question: What is the lifespan of a circuit breaker like the QOB240?

    Answer: The lifespan of a circuit breaker, including the Square D QOB240, generally depends on its usage and the conditions it operates under. High-quality circuit breakers can last for decades if maintained properly and not subjected to frequent tripping. Regular inspections can help ensure functionality and performance, allowing users to identify potential issues before they lead to failures. Consider replacing circuit breakers that frequently trip or show signs of wear to maintain electrical safety.

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