NFJ631150R - 150Amp Circuit Breaker

NFJ631150R - 150Amp Circuit Breaker

Need to match an existing NFJ631150R circuit breaker? Start with the details that actually matter. This unit is a 150A, 3-pole molded-case circuit breaker with a thermal-magnetic trip, bolt-on mounting, and a rotary handle. It is rated 22k AIC at 480VAC and 25k AIC at 240VAC and includes load-side lug terminals. The breaker measures 9.31 inches high, 4.13 inches wide, and 3.75 inches deep, so check those dimensions carefully when working with existing equipment. For maintenance and replacement applications, the NFJ631150R is a practical choice when the original system calls for this specific combination of amperage, poles, mounting style, interrupting rating, and physical size. It's built to last in its intended application without adding unnecessary complexity to an established electrical system.

Key Features and Benefits

• 150A rating for electrical equipment designed around this amperage.
• 3-pole configuration for compatible three-pole applications.
• Thermal-magnetic trip provides overload and short-circuit protection within the breaker's specified ratings.
• 22k AIC at 480VAC and 25k AIC at 240VAC interrupting ratings.
• Bolt-on mounting for equipment designed to accept this NFJ configuration.
• Rotary-type handle matches applications requiring this operating style.
• Load-side lug terminals included, helping match the required connection arrangement.
• 40°C rating based on the available product specifications.
• A good fit for maintenance work where matching the original breaker's form and function is important.

Technical Specifications

• Part Number: NFJ631150R
  
• Type: NFJ
  
• Breaker Type: Molded Case Circuit Breaker
  
• Amperage: 150A
  
• Poles: 3
  
• Trip Type: Thermal Magnetic
  
• AIC Rating: 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

• Specific certification and material-compliance information was not provided in the available specifications for the NFJ631150R. If the application requires UL, CSA, RoHS, or another certification, confirm that information from the breaker markings or applicable technical documentation.
• Also check compatibility before installation. Verify the amperage, number of poles, voltage, and AIC ratings, mounting style, dimensions, terminals, and handle configuration against the existing breaker and electrical equipment.

Where It Works Best

• The NFJ631150R is best suited for compatible legacy electrical equipment designed for an NFJ 150A, 3-pole, bolt-on thermal magnetic breaker with a rotary-type handle. That makes it particularly relevant for maintenance and form, fit, and functional replacement work where the goal is to keep the existing equipment configuration.
• And with replacement breakers, the details count. A 150-amp, three-pole breaker doesn't automatically make the right fit. The AIC rating, voltage, dimensions, mounting arrangement, terminals, and handle style should also match the equipment requirements.
• When those specifications call for the NFJ631150R configuration, this breaker provides the electrical and physical characteristics needed for the intended application. Always confirm compatibility with existing equipment, and have qualified electrical personnel perform the installation in accordance with applicable codes.