NFJ631175 - 175Amp Circuit Breaker

NFJ631175 - 175Amp Circuit Breaker

The NFJ631175 175 amp circuit breaker is commonly used when an existing electrical system needs to be repaired, serviced, or kept in operation without redesigning the panel. It’s a 3-pole thermal magnetic molded case breaker built to handle overloads and short-circuit conditions that can damage equipment or shut systems down unexpectedly. This model is typically selected as a replacement because it fits where it’s supposed to fit and does what it’s expected to do. The bolt-on mounting and included load-side lugs make installation straightforward for electricians working on maintenance or upgrade projects.

Key Features and Benefits

• Thermal magnetic protection: Responds to overloads and fault conditions
• 3-pole configuration: For use in three-phase applications
• Bolt-on design: Installs into compatible panels without extra work
• Load-side lug terminals included: So no additional hardware is needed
• Compact size: Works well in existing equipment layouts

Technical Specifications

• Amperage: 175A
• Poles: 3
• Voltage rating: 480 VAC / 240 VAC
• Interrupting capacity:
  • 22kA at 480 VAC
  • 25kA at 240 VAC
• Frame type: NFJ
• Mounting style: Bolt-on
• Breaker type: Thermal magnetic, molded case
• Operating temperature: 40°C
• Dimensions: 4.13" W x 9.31" L x 3.75" D
• Load-side lugs: Included

Material Compliance and Certifications

• This circuit breaker is manufactured using materials that meet standard industry requirements for electrical safety and performance. It is suitable for professional use in commercial and industrial environments where dependable operation and code-compliant equipment are expected.

Where It Works Best

• The NFJ631175 is best suited for maintenance and replacement work in existing electrical systems. It’s often used in commercial buildings, industrial facilities, and other installations where keeping equipment running safely is more important than adding new features. For electricians and maintenance teams, this breaker offers a straightforward way to restore proper circuit protection without changing the overall system design.