NFJ631200 - 200Amp Circuit Breaker

NFJ631200 - 200Amp Circuit Breaker

Need an NFJ631200 circuit breaker for an existing electrical system? This 200-amp, 3-pole molded-case circuit breaker features bolt-on mounting and thermal-magnetic protection. It's designed for compatible NFJ equipment where matching the original breaker's size, mounting arrangement, and electrical ratings is important. The NFJ631200 has an A.I.C. rating of 22kA at 480VAC and 25kA at 240VAC, with a 40°C rating. It measures 9.31 inches high, 4.13 inches wide, and 3.75 inches deep, and includes load-side lug terminals. You may also come across the NFJ434200 part number when identifying this breaker. For maintenance teams, electricians, and facility managers working with older electrical equipment, this cross-reference is useful. The NFJ631200 is a straightforward choice when the job calls for this particular NFJ form, fit, and function. Like many molded case breakers made for long-term electrical installations, these products were built to last when correctly applied and maintained.

Key Features and Benefits

• 200-amp rating for applications that require a 200A breaker.
• Three-pole design for compatible three-phase electrical systems.
• Bolt-on mounting to match equipment designed for this NFJ breaker configuration.
• Thermal-magnetic trip provides overload and short-circuit protection.
• Rated 22kA at 480VAC and 25kA at 240VAC.
• The breaker includes load-side lug terminals.
• 40°C rating for the specified operating conditions.
• Also identified as NFJ434200, which can help when cross-referencing an existing breaker.
• Well suited to replacement work where keeping the original form, fit, and function is the priority.

Technical Specifications

• Part Number: NFJ631200
  
• Alternate Part Number: NFJ434200
  
• Type: NFJ
  
• Amperage: 200A
  
• Poles: 3
  
• Breaker Type: Molded Case Circuit Breaker
  
• Trip Type: Thermal Magnetic
  
• Mounting: Bolt-On
  
• A.I.C. Rating: 22kA @ 480VAC; 25kA @ 240VAC
  
• Temperature Rating: 40°C
  
• Height: 9.31 in.
  
• Width: 4.13 in.
  
• Depth: 3.75 in.
  
• Ship Weight: 12.00 lbs. 
  
• Terminals: Load-Side Lug Terminals Included
  

Material Compliance and Certifications

• Material compliance and certification information is not included in the available specifications for the NFJ631200. Don't assume certification or compliance based on the part number alone. Check the markings on the breaker and confirm that its ratings and any required approvals meet the requirements of the equipment, installation, and applicable electrical codes.

Where It Works Best

• The NFJ631200 200A circuit breaker is best suited for maintenance and replacement in compatible electrical distribution equipment. It's a good fit when the existing system calls for an NFJ 3-pole, 200 amp, bolt-on thermal magnetic breaker with the same dimensions and electrical characteristics.
• This can be especially useful in commercial, industrial, and facility maintenance environments where existing electrical equipment stays in service. Rather than changing the system unnecessarily, the goal is simple: find a breaker that matches the equipment's requirements.
• Before making that match, check more than the part number. Confirm the 200A rating, three poles, bolt-on mounting, voltage and A.I.C. ratings, dimensions, terminal arrangement, and equipment compatibility. Those details are what determine whether the NFJ631200 is appropriate for the application.