E3020 - 20 Amp Circuit Breaker

E3020 - 20 Amp Circuit Breaker

When you're working with a three-phase electrical system, replacing a breaker usually comes down to one thing—matching the original specifications so the system keeps operating the way it was designed. The E3020 20 Amp 3-Pole Circuit Breaker is built for that kind of application. It’s a Type E thermal-magnetic breaker designed for systems that require a 20 Amp rating, 3-pole configuration, and 240VAC service, commonly found in established commercial and industrial electrical distribution setups.

Inside the breaker, a thermal-magnetic trip mechanism provides two layers of protection. The thermal element responds to sustained overload conditions by reacting to heat buildup in the circuit over time, while the magnetic element reacts instantly during short-circuit events. This type of protection system is widely used in legacy three-phase installations because it delivers consistent and predictable operation across all phases.

For electricians and maintenance teams, this breaker is typically used during repair or replacement work where keeping the original system design intact is the priority. Matching the correct amperage, pole configuration, and voltage rating helps ensure the electrical system continues to operate as intended without unnecessary modifications.

Key Features and Benefits

• 20 Amp current rating for three-phase circuit protection
• 3-pole configuration for 240VAC systems
• Type E thermal-magnetic breaker design
• Thermal and magnetic trip response for overloads and short circuits
• Non-interchangeable trip unit maintains original configuration
• 10kA interrupting capacity at 240VAC
• Rated for operation in ambient temperatures up to 40°C
• Includes load terminals for installation in compatible equipment
• Compact footprint for use in existing electrical systems
• Built to last for ongoing maintenance and replacement applications
• Suitable for form, fit, and functional replacement requirements
  

Technical Specifications

• Part Number: E3020
  
• Type: E
  
• Product Type: Thermal-Magnetic Circuit Breaker
  
• Amperage Rating: 20 Amps
  
• Poles: 3
  
• Voltage Rating: 240 VAC
  
• Interrupting Capacity: 10kA @ 240VAC
  
• Trip Unit: Non-Interchangeable
  
• Temperature Rating: 40°C (104°F)
  
• Included Terminals: Load Terminals
  
• Dimensions:
  • Width: 4.13 in
  • Height: 6.00 in
  • Depth: 3.31 in
  • Dimensions: 4.13"W x 6.00"H x 3.31"D
• Approximate Shipping Weight: 4.50 lbs
  

Material Compliance and Certifications

The E3020 should be installed and maintained by qualified electrical personnel in accordance with applicable electrical codes, safety standards, and manufacturer instructions. Before installation, verify compatibility with the existing electrical system, including voltage rating, amperage rating, interrupting capacity, pole configuration, and physical fit. No additional compliance or certification information was provided in the available specifications.

Where It Works Best

• The E3020 is commonly used in:
• Commercial electrical distribution systems
• Industrial facilities and manufacturing environments
• Institutional buildings such as schools and healthcare facilities
• Maintenance and repair work on existing equipment
• Three-phase systems requiring a Type E circuit breaker replacement
• 240VAC electrical distribution systems
• Legacy installations where matching original breaker specifications is required
• Equipment requiring a 20 Amp 3-pole breaker configuration