NFJ631175R - 175Amp Circuit Breaker

NFJ631175R - 175Amp Circuit Breaker

When you replace a circuit breaker in existing equipment, the small details can matter as much as the amp rating. The NFJ631175R is a 175-amp, 3-pole Type NFJ molded-case circuit breaker with a bolt-on design and thermal-magnetic protection. It features a rotary-type handle and includes load-side lug terminals. The breaker is rated 22kA at 480VAC and 25kA at 240VAC, with a 40°C rating. Size is another detail worth checking before installation: the NFJ631175R measures 9.31 inches high, 4.13 inches wide, and 3.75 inches deep. That combination of dimensions, mounting style, electrical ratings, and NFJ configuration makes this breaker a practical fit for compatible existing and legacy electrical equipment. Its molded-case construction is built to last when properly installed and operated within its stated ratings.

Key Features and Benefits

• 175A rating with three poles for equipment designed to use this NFJ configuration.
• Thermal magnetic trip protection provides overcurrent and short-circuit protection within the breaker's specified ratings.
• Bolt-on mounting lets you install the breaker in compatible equipment designed for this connection style.
• A rotary-type handle provides a straightforward way to operate the breaker.
• Rated 22kA at 480VAC and 25kA at 240VAC.
• Load-side lug terminals are included, an important detail when checking the breaker against an existing installation.
• 40°C rating for applications operating within the breaker's specified conditions.
• Its defined dimensions and NFJ form factor help make it easier to check physical fit before installation.

Technical Specifications

• Part Number: NFJ631175R
  
• Type: NFJ
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage: 175A
  
• Poles: 3
  
• Trip Type: Thermal Magnetic
  
• A.I.C. Rating: 22kA @ 480VAC; 25kA @ 240VAC
  
• Mounting: Bolt-On
  
• Handle: Rotary Type
  
• Temperature Rating: 40°C
  
• Terminals: Load-Side Lug Terminals Included
  
• Height: 9.31 in.
  
• Width: 4.13 in.
  
• Depth: 3.75 in.
• Ship Weight: 12.00 lbs. 
  

Material Compliance and Certifications

• The available specifications for the NFJ631175R do not include material-compliance information, agency listings, or certification details. Rather than assume a certification based on the breaker family or part number, check the markings on the actual breaker and the documentation for the equipment where it will be installed.
• If a job has specific code, certification, or material-compliance requirements, confirm those requirements before installation. As with any molded case circuit breaker, qualified electrical personnel should handle installation and follow applicable electrical codes and equipment requirements.

Where It Works Best

• The NFJ631175R circuit breaker is intended for compatible electrical equipment that requires its particular combination of 175A capacity, three poles, NFJ configuration, bolt-on mounting, thermal magnetic protection, and rotary handle. It is especially relevant when servicing existing or legacy electrical distribution equipment where maintaining the original form, fit, and electrical characteristics matters.
• Check the complete specification before treating any circuit breaker as a replacement. Amperage is only one piece of the puzzle. Compare the part number, dimensions, pole count, mounting method, voltage and A.I.C. ratings, terminal arrangement, handle type, and other equipment requirements.
• For an application that specifically calls for the NFJ631175R configuration, those details matter most. You get a 175A, 3-pole molded case circuit breaker with clearly defined electrical ratings and physical dimensions, making it easier to determine whether it matches the equipment already in place.