NEF421050 - 50Amp Circuit Breaker

NEF421050 - 50Amp Circuit Breaker

The NEF421050 50 amp circuit breaker is designed to protect dual-phase electrical circuits from overloads and short circuits in commercial, industrial, and residential applications. As a two-pole, bolt-on molded case circuit breaker, it provides steady, dependable performance in systems that require consistent 50A protection. The built-in thermal magnetic trip unit responds to both prolonged overcurrent conditions and sudden fault events, helping protect wiring, connected equipment, and panel components from damage. Its straightforward bolt-on design allows for a secure fit in compatible panels, while the compact size makes it a practical choice when space inside the enclosure is limited. Whether you’re replacing an existing breaker or maintaining an established electrical system, the NEF421050 offers reliable circuit protection without unnecessary complexity.

Key Features and Benefits

• 50 Amp Rating: Ideal for medium-load dual-phase circuits requiring consistent 50A protection.
• Two-Pole Configuration: Designed to protect both phases of a 240V or 480V circuit.
• Thermal Magnetic Trip: Provides dependable overload and short-circuit protection.
• Bolt-On Mounting: Secures firmly to the panel for stable electrical connections.
• Molded Case Design: Built for durability and long service life in demanding environments.
• Compact Footprint: Fits efficiently into compatible panelboards where space matters.
  

Technical Specifications

• Model Number: NEF421050
  
• Amperage: 50 Amps
  
• Poles: 2
  
• Voltage Rating: Up to 480VAC
  
• Interrupting Rating:
  • 14kA @ 480VAC
  • 18kA @ 240VAC
• Frame Type: NEF
  
• Mounting Type: Bolt-On
  
• Trip Type: Thermal Magnetic
  
• Dimensions:
  • Width: 2.75”
  • Length: 6.19”
  • Depth: 3.38”

Material Compliance and Certifications

• The NEF421050 is manufactured in accordance with recognized industry safety and performance standards. Each breaker is tested to help ensure it operates within its rated specifications.
• Constructed from quality materials, it is designed to handle normal operating demands while maintaining reliable protection over time.
  

Where It Works Best

• This 50 amp, 2 pole circuit breaker is commonly used in commercial buildings, light industrial facilities, and larger residential systems that require dependable dual-phase protection.
• It is well suited for panelboards supporting HVAC equipment, lighting circuits, small machinery, and general power distribution.
• For electrical professionals seeking a secure bolt-on replacement breaker with proven thermal magnetic protection, the NEF421050 is a practical and dependable option.