EB3050L - 50Amp Circuit Breaker

EB3050L - 50 Amp Circuit Breaker

The EB3050L circuit breaker is a 3-pole, 50-amp thermal-magnetic breaker designed for use in electrical distribution panels manufactured prior to 1989 that require the EB frame type. Built to provide dependable overcurrent protection for branch circuits and feeder applications, this breaker combines thermal and magnetic trip elements to respond to both sustained overloads and short-circuit conditions. The non-interchangeable trip unit ensures the breaker maintains its factory-set protection characteristics, supporting consistent operation within compatible legacy panelboards. Rated 10kA A.I.C. at 240VAC and calibrated for 40°C operation, the EB3050L is designed to meet the electrical demands of commercial and industrial systems where maintaining proper form and fit with existing equipment is essential. Line and load terminals are included to simplify installation and help maintain secure electrical connections. These breakers were built to last and remain a practical solution for maintaining older electrical systems where exact compatibility with existing panels is required.

Key Features and Benefits

• 50 Amp continuous current rating: suitable for branch circuit or feeder protection
• 3-pole configuration: for three-phase electrical systems
• Thermal-magnetic trip mechanism: helps protect against both overloads and short circuits
• 10kA interrupting rating at 240VAC: for dependable fault interruption
• EB frame type: designed for compatibility with specific legacy panelboards
• Non-interchangeable trip unit: maintains original protection calibration
• 40°C rated operation: for typical electrical room environments
• Line and load terminals included: to support secure wiring connections
• Built for long-term durability: in properly maintained electrical systems
  

Technical Specifications

• Part Number: EB3050L
  
• Amperage Rating: 50 Amps
  
• Poles: 3
  
• Interrupting Rating: 10k A.I.C.
  
• Voltage Rating: 240 VAC
  
• Trip Type: Thermal-Magnetic
  
• Frame Type: EB
  
• Trip Unit: Non-Interchangeable
  
• Temperature Rating: 40°C
  
• Terminals: Line and Load Included
  
• Panel Compatibility: Panels manufactured prior to 1989
  
• Ship Weight: 4.13 lbs
  
• Shipping Dimensions:
  • Height: 6.0 in

Material Compliance and Certifications

• Industry Standards: The EB3050L circuit breaker is manufactured to align with applicable electrical industry standards for molded case circuit breakers used in North American electrical systems.
• Construction and Safety: Components and construction follow established electrical safety requirements typically associated with UL-listed breaker designs used in legacy panel installations.
• Installation Note: Always verify compatibility with the specific panel and application requirements before installation.
  

Where It Works Best

• Commercial buildings with legacy electrical distribution panels
• Industrial facilities maintaining existing switchgear and panel systems
• Maintenance and repair projects requiring correct form-fit replacement breakers
• Electrical service contractors working with established three-phase power distribution equipment

Its ratings and frame design make it well suited for maintaining operational continuity in systems that require a compatible replacement rather than changes to the original panel configuration.