RC3840 - 40Amp Circuit Breaker

RC3840 - 40Amp Circuit Breaker

Keep your existing electrical system operating with this replacement for the RC3840 circuit breaker. Designed as a form, fit, and functional replacement for the original RC38-40, this 2-pole, 40-amp thermal-magnetic circuit breaker is manufactured to fit the existing mounting location without requiring modifications to the panel. Its space-saving plug-on design makes it well suited for maintaining compatible legacy electrical distribution systems while delivering dependable overcurrent and short-circuit protection. Built to last, this replacement breaker is rated for 120/240VAC applications with a 10kA interrupting capacity (A.I.C.), helping protect branch circuits from overloads and short circuits in residential and light commercial installations where the original RC38-40 was used. Developed with compatibility in mind, it offers an effective solution for restoring service while preserving the original panel configuration.

Key Features and Benefits

• Form, Fit, and Functional Replacement: For the original RC38-40 circuit breaker.
• 40 Amp, 2-Pole Configuration: For 120/240VAC branch circuit protection.
• Space-Saving Plug-On Design: Fits the existing breaker location.
• Thermal-Magnetic Trip Mechanism: Helps protect against overloads and short circuits.
• 10kA A.I.C. Interrupting Rating: At 120/240VAC.
• Compatible Installation: Manufactured for compatibility with existing installations that originally used the RC38-40.
• Built to Last: For dependable operation in compatible electrical systems.
  

Technical Specifications

• Part Number: RC3840
  
• Replacement For: RC38-40
  
• Type: RC38
  
• Poles: 2
  
• Current Rating: 40 Amps
  
• Voltage Rating: 120/240VAC
  
• Interrupt Rating (A.I.C.): 10kA @ 120/240VAC
  
• Trip Unit: Thermal-Magnetic
  
• Mounting Style: Space-Saving Plug-On
  
• Dimensions:
  • Height: 4.81 in.
  • Width: 0.75 in.
  • Depth: 2.50 in.

Material Compliance and Certifications

• Industry Standards: Manufactured to meet applicable industry standards for form, fit, and functional replacement applications.
• Panel Compatibility: Designed for use in compatible electrical panels that originally accepted the RC38-40 circuit breaker.
• Installation Notice: Always verify panel compatibility and applicable local electrical codes before installation.
  

Where It Works Best

• This replacement circuit breaker is well suited for maintaining compatible legacy load centers and panelboards that were originally equipped with the RC38-40. It is commonly used in residential and light commercial electrical systems requiring a 2-pole, 40-amp breaker for 120/240VAC branch circuits. Its form, fit, and functional compatibility allows existing equipment to remain in service without changing the original panel layout, making it an ideal choice for repairs, maintenance, and replacement projects.