EB3050L - 50Amp Circuit Breaker

EB3050L - 50Amp Circuit Breaker

If you’re working on an older electrical system, you already know this: finding the right replacement breaker isn’t about “new vs old”—it’s about fit, compatibility, and keeping your system operating the way it was originally designed. The EB3050L 50 Amp 3-Pole Type EB circuit breaker is built specifically for that purpose.

Inside, the EB3050L uses a thermal-magnetic trip mechanism, which responds to both overload conditions and short-circuit events. That combination of protection has been widely used in electrical distribution systems for decades, and it remains a dependable method for safeguarding circuits in properly maintained equipment.

Because this is a non-interchangeable trip unit, it maintains the original design integrity of compatible Type EB panels. That’s especially important when working with legacy systems where consistency and proper matching are critical for safe operation.

In the field, you’ll typically find this breaker used in older commercial buildings, industrial facilities, institutional campuses, and municipal infrastructure—anywhere electrical systems from earlier panel generations are still in service and being maintained rather than replaced.

Key Features and Benefits

• Built for Type EB panelboards manufactured before 1989
• 50 amp, 3-pole breaker for three-phase electrical systems
• Thermal-magnetic protection for overload and short-circuit conditions
• 240VAC rating with 10kA interrupting capacity
• Non-interchangeable trip design for proper system compatibility
• Includes line and load terminals for easier replacement work
• Designed for form, fit, and function in existing legacy panels
• Commonly used in maintenance and repair of older electrical systems
• Suitable for commercial, industrial, and institutional environments
• Built to last for long-term service in properly maintained equipment

Technical Specifications

• Part Number: EB3050L
  
• Type: EB
  
• Amperage: 50 Amps
  
• Poles: 3
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity: 10kA A.I.C. @ 240VAC
  
• Trip Type: Thermal-Magnetic
  
• Trip Unit: Non-Interchangeable
  
• Temperature Rating: 40°C (104°F)
  
• Terminals: Line and Load Included
  
• Dimensions: 4.13" W × 6.0" H × 3.38" D
  
• Shipping Weight: Approx. 5.50 lbs
  

Material Compliance and Certifications

The EB3050L is intended for use in compatible Type EB electrical panelboards and should only be installed by qualified electrical personnel. Always confirm panel compatibility, voltage rating, and system requirements before installation. Proper installation helps ensure safe operation within the design limits of the equipment.

Where It Works Best

The EB3050L is a strong fit for environments where older electrical systems are still in operation and reliability depends on correct component matching, including:

• Legacy commercial electrical distribution systems
• Industrial facilities with older Type EB panelboards
• Institutional buildings such as schools and campuses
• Municipal and government infrastructure systems
• Maintenance and repair projects on pre-1989 panel installations
• Three-phase power distribution setups requiring a 50 amp breaker