EGB14050 - 50 Amp Circuit Breaker

EGB14050 - 50 Amp Circuit Breaker

When it's time to replace a breaker in an existing NF panelboard, getting the right match isn't just important—it's what keeps your electrical system working the way it was designed. The EGB14050 is a 1-pole, 50-amp E-Frame miniature circuit breaker built as a form, fit, and functional replacement for compatible bolt-on applications. Designed for 277VAC systems, it combines a thermal-magnetic trip unit with a secure bolt-on mounting design to provide dependable protection against overloads and short circuits while maintaining compatibility with your existing equipment.

Whether you're troubleshooting a tripped circuit, performing scheduled maintenance, or replacing a worn breaker during a panel service, using the correct replacement helps minimize downtime and keeps your project moving.

Key Features and Benefits

• 50 Amp current rating for dependable branch circuit protection
• Single-pole design for compatible lighting and power distribution circuits
• Form, fit, and functional replacement for compatible E-Frame NF panelboard applications
• Bolt-on mounting for secure installation in compatible equipment
• Thermal-magnetic trip unit helps protect against overloads and short circuits
• Built-in trip indicator provides quick visual confirmation when the breaker has tripped
• Interrupting ratings:
  • 65kA @ 120VAC
  • 35kA @ 120/240VAC
  • 35kA @ 240VAC
  • 35kA @ 277VAC
• Rated for HID and HACR applications
• Designed for operation in 40°C (104°F) ambient environments
• Molded case construction built to last

Technical Specifications

• Catalog Number: EGB14050
  
• Product Type: E-Frame Miniature Circuit Breaker
  
• Series: EGB
  
• Frame: 125A EDB / EGB / EJB Frame
  
• Poles: 1
  
• Amperage: 50 Amps
  
• Maximum Operating Voltage: 277VAC
  
• Trip Unit Technology: Thermal-Magnetic
  
• Trip Unit Rating: 1800A
  
• Holding Current: 630A
  
• Interrupting Capacity:
  • 65kA @ 120VAC
  • 35kA @ 120/240VAC
  • 35kA @ 240VAC
  • 35kA @ 277VAC
• Mounting Type: Bolt-On
  
• Electrical Connections: Aluminum or Copper Lugs
  
• Compatible Wire Size:
  • Aluminum: AWG 12–2/0
  • Copper: AWG 14–2/0
• Torque Specifications:
  • 34.5 lb-in (3.9 N·m) for AWG 14–10
  • 49.6 lb-in (5.6 N·m) for AWG 8–2/0
• Compatible Equipment: NF Panelboards
  
• Dimensions:
  • Width: 0.98 in.
  • Height: 5.66 in.
  • Depth: 4.05 in.
• Approximate Weight: 2 lbs.
  
• Operating Temperature: 40°C (104°F)
  

Material Compliance and Certifications

The EGB14050 is cULus Listed, HACR Rated, and High Intensity Discharge (HID) Rated, making it suitable for applications requiring these certifications. It is also TAA Compliant. Before installation, verify compatibility with your existing NF panelboard and confirm that the electrical ratings meet your application's requirements. Installation should always follow applicable electrical codes and the equipment manufacturer's recommendations.

Where It Works Best

• Commercial office buildings
• Schools and educational facilities
• Hospitals and healthcare facilities
• Retail stores and shopping centers
• Manufacturing and industrial facilities
• Lighting panelboards
• HVAC equipment
• HID lighting circuits
• Maintenance and repair of existing electrical distribution systems