E42B050 - 50Amp Circuit Breaker

E42B050 - 50 Amp Circuit Breaker

The E42B050 molded case circuit breaker is a 2-pole, 50-amp bolt-on breaker designed for dependable circuit protection in commercial and industrial electrical distribution systems. Built on the E42 frame, this breaker provides protection against overloads and short circuits while maintaining compatibility with equipment designed for this form factor. With an interrupting rating of 18kA at 480VAC and 25kA at 240VAC, the E42B050 is well-suited for panelboards and distribution equipment where these ratings are required. Its bolt-on mounting configuration offers a secure installation, and the included load-side terminals simplify wiring during maintenance or replacement. Rated for operation at 40°C and HACR applications, this molded case circuit breaker is commonly used as a form-fit-function replacement in existing electrical systems where matching specifications and reliable operation are essential. Like many molded case breakers built for industrial service, these units are designed with durability in mind and are built to last when installed and maintained properly.

Key Features and Benefits

• 50 Amp continuous current rating: suitable for branch circuit protection in compatible systems
• 2-pole configuration: for use in 240V and 480V electrical distribution applications
• Bolt-on mounting design: helps ensure a secure connection to panelboards and switchgear
• Interrupting capacity: of 18kA at 480VAC and 25kA at 240VAC for fault protection in appropriately rated systems
• Load-side terminals included: to support straightforward wiring during installation
• HACR rated: allowing use in heating, air conditioning, and refrigeration circuits where specified
• E42 frame type: designed to match equipment requiring this form, fit, and functional configuration
• Durable construction: constructed for long service life in properly maintained electrical installations
  

Technical Specifications

• Part Number: E42B050
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: E42
  
• Poles: 2
  
• Current Rating: 50 Amperes
  
• Interrupting Rating:
  • 18kA @ 480VAC
  • 25kA @ 240VAC
• Mounting Type: Bolt-On
  
• Operating Temperature Rating: 40°C
  
• HACR Rated: Yes
  
• Terminals: Load-side terminals included
  
• Approximate Shipping Weight: 2.0 lbs
  
• Approximate Height: 6.35 in
  

Material Compliance and Certifications

• Manufactured as a molded case circuit breaker designed to meet typical industry construction standards for electrical protection devices
• HACR rated for use in heating, air-conditioning, and refrigeration equipment circuits where applicable
• Built for installation in electrical systems that require breakers with the specified amperage, pole configuration, and interrupting capacity

Where It Works Best

• The E42B050 circuit breaker is commonly used in commercial buildings, industrial facilities, and electrical distribution panels where an E42 frame breaker with a 50-amp rating is required. It is particularly suitable for panelboards, control systems, HVAC equipment circuits, and distribution equipment designed to accept bolt-on molded case breakers with the same electrical ratings. Electricians and maintenance professionals often use this model when maintaining or servicing existing systems that require a matching form, fit, and functional replacement to maintain proper circuit protection and compatibility with installed equipment.