E2040 - 40Amp Circuit Breaker

E2040 - 40Amp Circuit Breaker

When you're replacing a breaker in an existing panel, the most important thing is getting a direct match that keeps the system working the way it was originally designed. The E2040 40 Amp 2-Pole Circuit Breaker is used in electrical systems that require a Type E thermal-magnetic breaker with a 40 Amp rating and 120/240VAC service. It’s commonly selected for maintenance and replacement work where keeping the original breaker type, footprint, and electrical characteristics is essential.

The breaker uses a thermal-magnetic trip design, which is a familiar setup in commercial and industrial electrical systems. The thermal side responds to gradual overloads that build heat in the circuit, while the magnetic side reacts instantly during short-circuit conditions. It’s a straightforward, proven approach to circuit protection that works well in established electrical infrastructure.

This model is rated for a 10kA interrupting capacity at 120/240VAC, making it suitable for a variety of general-purpose applications within its listed ratings. It also includes a non-interchangeable trip unit, helping maintain the original factory configuration of the equipment it’s installed in.

Key Features and Benefits

• 40 Amp rating for branch circuit protection
• 2-pole design for 120/240VAC systems
• Type E thermal-magnetic breaker construction
• Overload and short-circuit protection in one device
• Non-interchangeable trip unit preserves original setup
• 10kA interrupting capacity at 120/240VAC
• Rated for operation up to 40°C (104°F)
• Includes load terminals for compatible installations
• Compact design for use in existing electrical equipment
• Built to last in long-term electrical system applications
• Ideal for form, fit, and functional replacement work
  

Technical Specifications

• Part Number: E2040
  
• Type: E
  
• Product Type: Thermal-Magnetic Circuit Breaker
  
• Amperage Rating: 40 Amps
  
• Poles: 2
  
• Voltage Rating: 120/240 VAC
  
• Interrupting Capacity: 10kA @ 120/240VAC
  
• Trip Unit: Non-Interchangeable
  
• Temperature Rating: 40°C (104°F)
  
• Included Terminals: Load Terminals
  
• Dimensions:
  • Width: 2.75 in
  • Height: 6.00 in
  • Depth: 3.31 in
  • Dimensions: 2.75"W x 6.00"H x 3.31"D
• Approximate Shipping Weight: 4.00 lbs
  

Material Compliance and Certifications

The E2040 should be installed and maintained by qualified electrical personnel following all applicable electrical codes and equipment manufacturer instructions. Before installation, confirm compatibility with the existing system, including voltage, amperage, interrupting rating, pole configuration, and physical fit. No additional certification data was provided in the available specifications.

Where It Works Best

• The E2040 is commonly used in:
• Commercial electrical distribution systems
• Industrial facilities and manufacturing environments
• Institutional buildings and campuses
• Maintenance and repair work on existing equipment
• Branch circuit protection applications
• Systems requiring a Type E circuit breaker replacement
• 120/240VAC electrical distribution setups
• Legacy panels where matching original breaker specifications is required
• Equipment requiring a 40 Amp 2-pole breaker