NJL631350 - 350Amp Circuit Breaker

NJL631350 - 350Amp Circuit Breaker

If you're replacing an NJL631350, getting the details right matters. This is a 350-amp, 3-pole molded-case circuit breaker with a thermal-magnetic trip and bolt-on mounting. It's intended for compatible electrical equipment where the original breaker specifications need to be closely matched, particularly in legacy systems.

The NJL631350 is rated 22k A.I.C. at 600VAC, 30k A.I.C. at 480VAC, and 42k A.I.C. at 240VAC. It measures 10.13 inches high, 8.25 inches wide, and 3.88 inches deep, has a 40°C rating, and includes load-side lug terminals.

You may also see this breaker identified as NJL632350. That alternate number is worth knowing when you're checking an existing installation or identifying a replacement. As with any molded case circuit breaker, don't go by the catalog number alone. The amperage, poles, mounting, dimensions, voltage, interrupting rating, and terminal configuration must match the equipment requirements. The NJL631350 is built to last and is a practical choice when this specific NJL configuration is called for.

Key Features and Benefits

• 350A, 3-pole configuration for equipment designed to use this NJL breaker arrangement.
• Thermal-magnetic trip provides overcurrent and short-circuit protection.
• Bolt-on mounting for compatible electrical equipment.
• Interrupting ratings of 22k A.I.C. at 600VAC, 30k A.I.C. at 480VAC, and 42k A.I.C. at 240VAC.
• Includes load-side lug terminals for the specified load connection.
• 40°C rated.
• Also identified by the part number NJL632350, which can help when cross-checking an existing breaker.
• Designed to maintain the required form, fit, and function when properly matched to compatible equipment.

Technical Specifications

• Part Number: NJL631350
  
• Alternate Part Number: NJL632350
  
• Type: NJL
  
• Breaker Type: Molded Case Circuit Breaker
  
• Trip Type: Thermal Magnetic
  
• Amperage: 350A
  
• Poles: 3
  
• A.I.C. Rating at 600VAC: 22k
  
• A.I.C. Rating at 480VAC: 30k
  
• A.I.C. Rating at 240VAC: 42k
  
• Mounting: Bolt-On
  
• 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 did not include specific agency certifications, certification file numbers, or material compliance information. If a particular certification or compliance standard is required for the installation, confirm those requirements before using the breaker.
• Electrical requirements can vary by application. Always match the breaker to the equipment and applicable electrical codes, including the required voltage and interrupting capacity.

Where It Works Best

• The NJL631350 350A circuit breaker is best suited for maintenance and replacement work in compatible legacy electrical systems that require this NJL breaker configuration. It's particularly useful when an existing installation calls for an NJL631350 or NJL632350 and you need to retain the correct physical and electrical characteristics.
• Before using it as a replacement, compare it with the existing breaker and equipment requirements. Check the 350-amp rating, three poles, bolt-on mounting, dimensions, load-side lug arrangement, system voltage, and required A.I.C. rating. Those details are what determine whether the breaker is the right fit for the application.