Q40 - 40Amp Circuit Breaker

Q40 - 40Amp Circuit Breaker

The Q40 circuit breaker is a 40-amp, 1-pole Type Q plug-on circuit breaker designed for your compatible electrical panels and load centers that require this specific breaker configuration. With a 10kA interrupting rating at 120VAC, the Q40 provides the electrical ratings needed for appropriate branch-circuit applications while maintaining the form and fit associated with Type Q installations. Its plug-on mounting style allows the breaker to connect within a compatible panel without a bolt-on mounting arrangement. Measuring approximately 4.81 inches high, 0.75 inches wide, and 2.5 inches deep, this breaker is particularly useful when you're maintaining or replacing components in existing electrical systems where matching the breaker type, physical dimensions, pole configuration, amperage, voltage, and interrupting capacity matters. Built to last in its intended application, the Q40 offers a straightforward replacement for qualified installations requiring a 40A single-pole Type Q breaker. Always verify panel compatibility, electrical ratings, and applicable code requirements before installation.

Key Features and Benefits

• Rated for 40-amp circuit applications where the electrical system specifies this amperage.
• One-pole design suited to compatible single-pole circuit positions.
• Intended for electrical equipment that specifically accepts the Q40 Type Q breaker configuration.
• Plug-on construction supports proper form and fit in compatible panel assemblies.
• Rated at 10,000 amps (10kA) at 120VAC based on the provided product specifications.
• The approximately 0.75-inch width helps maintain the required physical footprint in compatible equipment.
• Designed for lasting service when correctly selected, installed, and used within its specified electrical ratings.
• A practical choice when an existing system calls for the Q40 part number, Type Q configuration, and matching electrical characteristics.

Technical Specifications

• Part Number: Q40
  
• Product Type: Circuit Breaker
  
• Type: Q
  
• Mounting Style: Plug-On
  
• Number of Poles: 1
  
• Amperage: 40A
  
• A.I.C. Rating: 10kA
  
• Voltage: 120VAC
  
• Dimensions:
  • Height: 4.81 in.
  • Width: 0.75 in.
  • Depth: 2.5 in.

Material Compliance and Certifications

• Specific material-compliance declarations and certification details were not provided in the available Q40 specifications. Because electrical certifications can depend on the exact manufacturer, production version, and product labeling, certification claims should not be assumed from the part number alone. For safety-sensitive electrical equipment, verify the markings on the breaker and the applicable manufacturer documentation to confirm the required listings, approvals, material compliance information, and suitability for the intended installation. This accuracy-first approach is especially important when matching components in existing electrical systems.

Where It Works Best

• The Q40 40-amp circuit breaker works best as a form, fit, and function replacement in compatible electrical panels or load centers that accept the Type Q plug-on configuration and meet the breaker's stated dimensions and ratings. It is suited to applications calling for a single-pole, 40A breaker with a 10kA A.I.C. rating at 120VAC, including maintenance and replacement work in existing or legacy electrical systems where retaining the specified breaker format is important. Compatibility should never be determined by amperage alone; confirm the panel or equipment requirements, mounting configuration, voltage, interrupting rating, physical fit, and applicable electrical codes before installation. Installation and replacement should be performed by a qualified electrical professional where required.