E43B020L - 20Amp Circuit Breaker

E43B020L - 20Amp Circuit Breaker

Finding the right replacement circuit breaker isn't just about matching the amperage rating—it's about ensuring compatibility with the existing electrical system. The E43B020L is a 20-amp, 3-pole molded-case circuit breaker designed for applications requiring a Type E43 breaker with specific interrupting and voltage ratings. Whether you're performing routine maintenance, replacing a failed breaker, or supporting an existing electrical distribution system, this breaker provides the form, fit, and function needed for compatible installations.

With an interrupting capacity of 25kA at 240VAC and 18kA at 480VAC, the E43B020L is designed to help protect electrical circuits from overloads and short circuits within its rated specifications. Its 3-pole configuration makes it well-suited for three-phase power systems commonly found in commercial buildings, industrial facilities, manufacturing environments, and mechanical equipment installations.

Electrical systems often remain in service for decades, and maintaining them requires components that match the original design requirements. Built to last and designed for dependable operation within its published ratings, the E43B020L molded case circuit breaker is a practical solution for keeping existing electrical infrastructure operating as intended without altering system specifications.

Key Features and Benefits

• 20 Amp current rating
• 3-pole configuration for three-phase power systems
• Type E43 molded case circuit breaker
• Includes both line-side and load-side terminals
• HACR rated for qualifying HVAC and refrigeration applications
• Interrupting capacity of 25kA at 240VAC
• Interrupting capacity of 18kA at 480VAC
• Designed for operation in 40°C ambient environments
• Supports form, fit, and functional replacement requirements
• Suitable for commercial, industrial, and facility maintenance applications
• Helps maintain compatibility with existing electrical equipment
• Built to last in demanding electrical environments
• Compact footprint for installation in compatible electrical assemblies

Technical Specifications

• Part Number: E43B020L
  
• Type: E43
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage Rating: 20 Amps
  
• Poles: 3
  
• A.I.C. Rating: 25kA @ 240VAC; 18kA @ 480VAC
  
• Operating Temperature: 40°C
  
• HACR Rated: Yes
  
• Included Accessories: Line-Side and Load-Side Terminals
  
• Width: 3.0 in
  
• Height: 6.35 in
  
• Depth: 3.92 in
  
• Dimensions: 3.0"W x 6.35"H x 3.92"D
  
• Approximate Shipping Weight: 5.38 lbs
  

Material Compliance and Certifications

• The E43B020L molded case circuit breaker is HACR rated and intended for installation and operation within its published electrical ratings.
• Compatibility with the existing panelboard, switchboard, or distribution equipment should be verified prior to installation.
• All installation, inspection, testing, and maintenance should be performed by qualified personnel and in accordance with applicable electrical codes, standards, and site requirements.

Where It Works Best

The E43B020L is commonly used in a variety of commercial and industrial electrical applications, including:

• Three-phase power distribution systems
• Commercial office buildings
• Manufacturing and processing facilities
• HVAC and refrigeration equipment
• Electrical panelboards and switchboards
• Facility maintenance and repair projects
• Industrial machinery and support equipment
• Replacement applications requiring a compatible Type E43 breaker
• Branch circuit protection in qualifying electrical systems