E42B020 - 20Amp Circuit Breaker

E42B020 - 20 Amp Circuit Breaker

The E42B020 molded case circuit breaker is a 2-pole, 20-amp bolt-on breaker designed for dependable overcurrent protection in commercial and industrial electrical distribution systems. Built for applications that require stable protection at higher voltage levels, this breaker carries an interrupting rating of 18kA at 480VAC and 25kA at 240VAC, helping safeguard equipment and wiring from damage caused by overloads or short circuits. Its E42 frame design allows it to fit compatible panelboards and switchboards where this frame type is specified, making it a practical form-fit-function replacement for existing installations. Rated for operation at 40°C and HACR applications, the E42B020 is commonly used in HVAC-related systems as well as general power distribution. The bolt-on mounting configuration provides a secure connection to the panelboard bus, while the included load-side terminals simplify installation. Molded case circuit breakers like the E42B020 are built to last, offering consistent electrical protection in systems where maintaining compatibility with existing equipment is important.

Key Features and Benefits

• 20 Amp Rating: Designed to protect circuits carrying up to 20 amps.
• 2-Pole Configuration: Provides protection for two-phase circuits in commercial and industrial systems.
• Bolt-On Mounting: Attaches securely to compatible panelboards for reliable electrical contact.
• High Interrupting Capacity: Rated 18kA at 480VAC and 25kA at 240VAC to help safely interrupt fault currents.
• E42 Frame Compatibility: Suitable as a direct replacement where E42 frame molded case breakers are specified.
• HACR Rated: Approved for use in heating, air conditioning, and refrigeration equipment circuits.
• Includes Load-Side Terminals: Allows straightforward conductor connections during installation.
• Designed for 40°C Operation: Suitable for environments that meet standard electrical equipment temperature ratings.

Technical Specifications

• Part Number: E42B020
  
• Device Type: Molded Case Circuit Breaker
  
• Frame Type: E42
  
• Poles: 2
  
• Amperage Rating: 20 Amps
  
• Interrupting Rating:
  • 18kA @ 480VAC
  • 25kA @ 240VAC
• Mounting Style: Bolt-On
  
• Temperature Rating: 40°C
  
• HACR Rated: Yes
  
• Terminals: Includes Load-Side Terminals
  
• Approximate Ship Weight: 2.0 lbs
  
• Height: 6.35 in.
  

Material Compliance and Certifications

• Industry Standards: The E42B020 molded case circuit breaker is manufactured to meet industry electrical safety and performance standards commonly required for molded case circuit breakers used in commercial and industrial systems.
• Compatibility: Components are designed for compatibility with listed panelboards and electrical distribution equipment where E42 frame breakers are specified.
  

Where It Works Best

• Commercial panelboards and switchboards requiring E42 frame breakers
• HVAC and refrigeration circuits due to its HACR rating
• Industrial facilities maintaining legacy electrical distribution equipment
• Maintenance and repair projects where form, fit, and functional replacement is required
• Electrical systems operating at 240VAC or 480VAC that require dependable circuit protection