NEF431050R - 50Amp Circuit Breaker

NEF431050R - 50Amp Circuit Breaker

The NEF431050R 50 amp circuit breaker is built to deliver dependable protection for commercial and industrial electrical systems operating at up to 480VAC. Designed as a 3 pole, thermal magnetic molded case circuit breaker, this unit helps safeguard equipment and wiring from overloads and short circuits, reducing the risk of costly downtime and electrical damage. Its bolt-on configuration provides a secure installation within compatible panelboards, while the integrated rotary handle allows for clear on/off indication and controlled manual operation. For maintenance teams and facility managers, the NEF431050R offers a practical, easy-to-operate solution that keeps existing electrical infrastructure protected and performing as intended.

Key Features and Benefits

• 50 Amp, 3 Pole Protection: Delivers consistent overload and short-circuit protection for three-phase systems.
• Thermal Magnetic Trip Mechanism: Combines thermal overload protection with instantaneous magnetic response for fast fault interruption.
• Rotary Handle Operation: Provides clear visual status indication and smooth manual control during servicing or routine inspections.
• Bolt-On Installation: Ensures a secure, stable connection within compatible panelboards, minimizing movement and enhancing reliability.
• Compact Molded Case Design: Engineered to fit efficiently within electrical enclosures without sacrificing performance.
  

Technical Specifications

• Amperage: 50A
  
• Poles: 3
  
• Voltage Rating: 480VAC / 240VAC
  
• AIC Rating: 14kA @ 480VAC; 18kA @ 240VAC
  
• Frame Type: NEF
  
• Breaker Type: Thermal Magnetic, Molded Case Circuit Breaker
  
• Installation Type: Bolt-On
  
• Dimensions: 4.13" W x 6.19" L x 3.38" D
  
• Operating Feature: Rotary Handle
  

Material Compliance and Certifications

• The NEF431050R circuit breaker is manufactured using high-quality, industry-compliant materials designed to meet established electrical safety and performance standards. Its molded case construction and internal components are engineered for professional use in commercial and industrial environments, supporting code-compliant installations and long-term system safety.

Where It Works Best

• This 50 amp bolt-on circuit breaker is well suited for maintenance replacement projects, facility upgrades, and service applications within commercial buildings, industrial plants, and other three-phase electrical systems. It’s an ideal choice when restoring protection to existing panelboards that require a properly rated NEF frame breaker with reliable thermal magnetic performance and straightforward rotary operation.