QC40 - 40Amp Circuit Breaker

QC40 - 40Amp Circuit Breaker

Keep your existing electrical distribution system operating with the QC40 40 Amp 2-Pole Plug-On Thermal-Magnetic Circuit Breaker, a replacement circuit breaker compatible with legacy QC load centers. This 40-amp, 2-pole plug-on circuit breaker provides thermal-magnetic overcurrent protection for 120/240 VAC electrical systems and features a 10 kA interrupting capacity (A.I.C.). Built for dependable, long-term service, it is engineered for proper form, fit, and function, allowing it to install in the existing QC40 breaker location without requiring panel modifications. As the original QC40 is no longer manufactured, this new aftermarket replacement is specially designed to fit and replace the original breaker while maintaining the electrical ratings and physical compatibility required for the application.

Key Features and Benefits

• Replacement for the QC40 circuit breaker in compatible legacy load centers.
• 40 Amp current rating for branch circuit protection.
• 2-pole design for 120/240VAC applications.
• Plug-on mounting allows installation in the existing breaker position.
• Thermal-magnetic trip mechanism helps protect against overloads and short circuits.
• 10kA A.I.C. rating at 120/240VAC.
• New aftermarket replacement engineered for proper form, fit, and function.
• Designed for lasting service in compatible electrical systems.
  

Technical Specifications

• Part Number: QC40
  
• Type: QC
  
• Breaker Style: Plug-On, Thermal-Magnetic
  
• Poles: 2
  
• Amperage: 40 Amps
  
• Voltage Rating: 120/240VAC
  
• Interrupting Capacity (A.I.C.): 10kA @ 120/240VAC
  
• Dimensions:
  • Height: 4.81 in.
  • Width: 1.50 in.
  • Depth: 2.50 in.

Material Compliance and Certifications

• Manufactured to meet applicable industry standards for replacement circuit breakers.
• Designed for compatibility with the original QC40 installation location in qualifying legacy electrical panels.
• Built using quality materials intended for long service life when installed and used according to applicable electrical codes and manufacturer recommendations.
  

Where It Works Best

• The QC40 replacement circuit breaker is well-suited for existing residential, commercial, and light industrial electrical systems that utilize compatible QC load centers requiring a 40-Amp, 2-pole plug-on breaker. It is commonly used to protect 120/240 VAC branch circuits serving larger electrical loads, where the panel was originally designed to accept a QC40 breaker. This replacement is intended for maintenance, repair, and continued operation of compatible legacy electrical installations while preserving the original panel configuration.