NEF431100 - 100Amp Circuit Breaker

NEF431100 - 100Amp Circuit Breaker

The NEF431100 100 Amp circuit breaker is built to deliver consistent, dependable protection in commercial and industrial electrical systems. Designed as a thermal magnetic molded case circuit breaker, this 3-pole unit safeguards equipment and conductors from both overloads and short circuits. With its bolt-on mounting configuration and NEF frame construction, the NEF431100 is a practical solution for maintaining and servicing existing distribution panels. When system uptime and safety matter, this breaker provides the reliable performance professionals expect from a 100A molded case circuit breaker rated for 480VAC and 240VAC applications.

Key Features and Benefits

• Thermal Magnetic Protection: Combines thermal overload protection with magnetic short-circuit interruption to help prevent equipment damage and electrical hazards.
• 100 Amp, 3 Pole Configuration: Designed for three-phase power distribution systems requiring stable 100A protection.
• Bolt-On Installation: Secure bolt-on mounting ensures a firm electrical connection and dependable operation within compatible panels.
• High Interrupting Capacity: Rated at 14k AIC at 480VAC and 18k AIC at 240VAC for effective fault current interruption.
• Compact Footprint: Engineered to fit within tight panel spaces while maintaining performance and compliance standards.
• Durable Molded Case Design: Built with high-quality materials intended for long-term use in demanding electrical environments.

Technical Specifications

• Model: NEF431100
  
• Amperage Rating: 100 Amps
  
• Poles: 3
  
• Voltage Rating: 480VAC / 240VAC
  
• Interrupting Rating (AIC): 14kA @ 480VAC; 18kA @ 240VAC
  
• Frame Type: NEF
  
• Breaker Type: Thermal Magnetic, Molded Case
  
• Installation Type: Bolt-On
  
• Dimensions: 4.13" W x 6.19" L x 3.38" D
  

Material Compliance and Certifications

• Industry Standards: The NEF431100 circuit breaker is manufactured using industry-compliant materials that meet recognized electrical safety and performance standards.
• Performance and Safety: Molded case circuit breakers in this class are designed and tested to operate within specified voltage and interrupting ratings, supporting safe integration into properly rated electrical distribution systems. Its construction supports consistent trip performance under approved load conditions, helping maintenance professionals uphold code-compliant installations.
  

Where It Works Best

• The NEF431100 100A 3-pole circuit breaker is ideal for maintenance and replacement applications in commercial buildings, industrial facilities, and institutional environments operating on 480V or 240V three-phase systems. It’s especially well-suited for restoring existing panelboards and distribution equipment to proper working order without system redesign. For facility managers, electrical contractors, and maintenance teams seeking a dependable bolt-on molded case circuit breaker, the NEF431100 offers a straightforward, performance-driven solution for ongoing electrical system protection.