NJL631300 - 300Amp Circuit Breaker

NJL631300 - 300Amp Circuit Breaker

Need an NJL631300 for an existing electrical system? This 300-amp, 3-pole molded-case circuit breaker has a bolt-on design, thermal-magnetic trip, and load-side lug terminals. It is made for equipment designed around the NJL breaker configuration, so it's a useful option when the job calls for matching an existing breaker by type, size, and electrical rating.

The NJL631300 is rated 22k AIC at 600VAC, 30k AIC at 480VAC, and 42k AIC at 240VAC, with a 40°C rating. Physical dimensions are 10.13 inches high, 8.25 inches wide, and 3.88 inches deep. Those details are worth checking closely with older equipment, where the right fit can be as important as matching the amperage.

Another part number you may see is NJL632300, which also identifies this breaker. That can help when comparing the breaker in hand with older equipment records, parts lists, or previous maintenance documentation.

Simply put, the NJL631300 is built to last and designed to do one job: provide the correct form, fit, and function in compatible electrical equipment. Before installation, check the breaker type, pole count, amperage, AIC rating, dimensions, mounting style, and terminal configuration against the existing system requirements.

Key Features and Benefits

• 300A, 3-pole configuration for compatible electrical applications
• Thermal magnetic trip for overcurrent protection
• Bolt-on design for equipment designed to accept this mounting style
• 22 kAIC at 600VAC
• 30 kAIC at 480VAC
• 42 kAIC at 240VAC
• Rated at 40°C
• Load-side lug terminals included
• Also known by part number NJL632300
• Clearly defined dimensions make it easier to compare against an existing breaker
• Built to last for its intended molded case circuit breaker application

Technical Specifications

• Part Number: NJL631300
  
• Also Known As: NJL632300
  
• Type: NJL
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage: 300A
  
• Poles: 3
  
• Trip Type: Thermal Magnetic
  
• Mounting: Bolt-On
  
• AIC Rating @ 600VAC: 22k
  
• AIC Rating @ 480VAC: 30k
  
• AIC Rating @ 240VAC: 42k
  
• Temperature Rating: 40°C
  
• Height: 10.13 in.
  
• Width: 8.25 in.
  
• Depth: 3.88 in.
  
• Ship Weight: 23.00 lbs.
• Terminals: Load-Side Lug Terminals Included
  

Material Compliance and Certifications

• The available specifications for the NJL631300 do not include specific material compliance information, agency listings, or certifications. Confirm these details on the breaker nameplate or in applicable technical documentation when required for a particular installation.

Where It Works Best

• The NJL631300 300A circuit breaker is intended for compatible electrical distribution equipment that uses the NJL breaker configuration. It makes the most sense for maintenance and replacement work in existing or legacy systems where you need to match the original breaker as closely as possible.
• Don't rely on amperage alone when checking compatibility. Compare the NJL type, 300A rating, three poles, bolt-on mounting, thermal magnetic trip, AIC rating, dimensions, and terminal arrangement with the existing breaker and equipment requirements. When those specifications align, the NJL631300 provides the form, fit, and function needed for the application.