NFJ621125 - 125Amp Circuit Breaker

NFJ621125 - 125Amp Circuit Breaker

The NFJ621125 125 Amp circuit breaker is a dependable 2-pole molded case breaker designed to protect existing commercial and industrial electrical systems from overloads and short circuits. Built with a thermal magnetic trip unit, it responds accurately to both sustained overcurrent conditions and sudden fault events. Rated for use at 480VAC and 240VAC, this breaker is a practical solution for professionals who need consistent performance and reliable circuit protection in demanding environments. Its compact molded case design and bolt-on mounting make it well suited for panelboard installations where secure, stable connections are essential.

Key Features and Benefits

• 125 Amp, 2-Pole Design – Ideal for multi-phase applications requiring dependable 125A protection.
• Thermal Magnetic Trip Mechanism – Provides reliable overload and short-circuit protection.
• Bolt-On Mounting – Ensures a firm, secure installation in compatible equipment.
• High Interrupting Capacity – Rated 22kA at 480VAC and 25kA at 240VAC for strong fault-clearing capability.
• Load-Side Lug Terminals Included – Supports safe, secure conductor connections.
• Molded Case Construction – Built for durability and long-term service performance.

Technical Specifications

• Model: NFJ621125
  
• Amperage: 125A
  
• Poles: 2
  
• Voltage Rating: 480VAC / 240VAC
  
• AIC Rating:
  • 22kA @ 480VAC
  • 25kA @ 240VAC
• Frame Type: NFJ
  
• Installation: Bolt-On
  
• Breaker Type: Thermal Magnetic Molded Case
  
• Operating Temperature: 40°C
  
• Dimensions:
  • Width: 4.13"
  • Length: 9.31"
  • Depth: 3.75"
• Terminals: Load-Side Lugs Included
  

Material Compliance and Certifications

• The NFJ621125 is manufactured using quality materials that meet industry safety and performance standards. Its molded case housing provides insulation and protection for internal components, while the trip mechanism is engineered for consistent operation under rated conditions. When installed according to code and manufacturer guidelines, this breaker supports compliance in commercial and industrial electrical systems.

Where It Works Best

• This 125 amp circuit breaker is commonly used in commercial buildings, industrial facilities, and other environments where maintaining existing electrical distribution equipment is critical. It’s a strong fit for panelboards and distribution systems that require a 2-pole, bolt-on breaker with dependable fault protection. Whether you're replacing a failed unit or performing preventative maintenance, the NFJ621125 helps keep electrical systems operating safely and efficiently.