NFJ631200R - 200Amp Circuit Breaker

NFJ631200R - 200Amp Circuit Breaker

When you're replacing a breaker in existing equipment, getting the details right matters. The NFJ631200R is a 200A, 3-pole Type NFJ molded case circuit breaker with a bolt-on design, thermal-magnetic trip, and rotary-style handle. It includes load-side lug terminals and is rated 22k AIC at 480VAC and 25k AIC at 240VAC. The breaker measures 9.31 inches high, 4.13 inches wide, and 3.75 inches deep. For facilities, maintenance teams, and electrical professionals working with compatible legacy equipment, those details make it easier to determine whether this breaker matches the existing application. Its molded-case construction is built to last when properly installed, used, and maintained within its specified ratings. Before putting it into service, compare the part number and specifications with the breaker being replaced and the equipment's requirements.

Key Features and Benefits

• 200A rating for equipment designed around this amperage requirement.
• 3-pole configuration for compatible three-pole applications.
• Thermal-magnetic trip provides the specified circuit protection without adding unnecessary complexity.
• Bolt-on mounting matches equipment designed for this connection style.
• Rotary-type handle provides a straightforward operating arrangement.
• Rated 22 kA at 480VAC and 25 kA at 240VAC.
• Load-side lug terminals are included.
• 40°C rating for applications calling for this specification.
• Molded-case construction is built to last when correctly applied and maintained.

Technical Specifications

• Part Number: NFJ631200R
  
• Type: NFJ
  
• Breaker Style: Molded Case Circuit Breaker
  
• Amperage: 200A
  
• Poles: 3
  
• Trip Type: Thermal Magnetic
  
• AIC / Voltage: 22k @ 480VAC; 25k @ 240VAC
  
• Mounting: Bolt-On
  
• Handle: Rotary Type
  
• Terminals: Load-Side Lug Terminals Included
  
• Temperature Rating: 40°C
  
• Height: 9.31 in.
  
• Width: 4.13 in.
  
• Depth: 3.75 in.
• Ship Weight: 12.00 lbs. 
  

Material Compliance and Certifications

• Material compliance and certification details were not provided in the available specifications for the NFJ631200R. Confirm any required listing, certification, or material-compliance information on the breaker label and in applicable product documentation before installation.
• Requirements can vary by equipment, application, and local electrical codes, so don't assume these details.

Where It Works Best

• The NFJ631200R makes the most sense in existing electrical equipment designed to accept a Type NFJ 200A, 3-pole molded case circuit breaker with the same mounting arrangement and electrical ratings.
• This is especially relevant when you're maintaining legacy equipment and need to match the installed breaker. In these situations, it's not about adding features you don't need. It's about getting the form, fit, ratings, and function right.