NM632500 - 500Amp Circuit Breaker

NM632500 - 500Amp Circuit Breaker

When you replace a breaker in existing equipment, the small details can matter as much as the amp rating. The NM632500 is a 500A, 3-pole Type NM molded case circuit breaker with a bolt-on design and thermal-magnetic protection. Its interrupting ratings are 22k A.I.C. at 600VAC, 30k A.I.C. at 480VAC, and 42k A.I.C. at 240VAC. It is rated at 40°C and comes with load-side lug terminals. The breaker measures 15.5 inches high, 8.19 inches wide, and 4.13 inches deep. For maintenance teams, electricians, and facility professionals working with compatible legacy electrical equipment, the NM632500 can provide the form, fit, and function needed when the existing installation calls for this configuration. It's a straightforward, built-to-last molded-case breaker for applications where matching the original electrical ratings, mounting style, dimensions, and connections matters.

Key Features and Benefits

• 500A, 3-pole configuration for compatible electrical distribution equipment.
• Thermal-magnetic operation provides overcurrent and short-circuit protection within the breaker's specified ratings.
• Bolt-on mounting matches equipment designed for this installation style.
• Multiple interrupting ratings: 22k A.I.C. at 600VAC, 30k A.I.C. at 480VAC, and 42k A.I.C. at 240VAC.
• Load-side lug terminals included, an important detail when matching an existing breaker's connection setup.
• 40°C rating for applications designed around this temperature reference.
• Molded case construction provides a durable, built-to-last enclosure for the breaker components.
• A practical choice for form, fit, and functional replacement when the existing system requires the NM632500 configuration.

Technical Specifications

• Part Number: NM632500
  
• Type: NM
  
• Product Type: Molded Case Circuit Breaker
  
• Amperes: 500A
  
• Poles: 3
  
• Trip Type: Thermal Magnetic
  
• Mounting: Bolt-On
  
• A.I.C. @ 600VAC: 22k
  
• A.I.C. @ 480VAC: 30k
  
• A.I.C. @ 240VAC: 42k
  
• Temperature Rating: 40°C
  
• Height: 15.5 in.
  
• Width: 8.19 in.
  
• Depth: 4.13 in.
  
• Ship Weight: 38.00 lbs.
  
• Terminals: Load-Side Lug Terminals Included
  

Material Compliance and Certifications

• No specific material-compliance declarations or certifications were provided with the available NM632500 specifications. If a particular certification, approval, or material requirement applies to your installation, check the breaker labeling and supporting technical documentation before use. This is especially important for facilities or applications with specific regulatory requirements.

Where It Works Best

• The NM632500 is best suited to existing electrical systems that require a 500-amp, 3-pole Type NM molded case circuit breaker with a bolt-on mounting arrangement. It's a natural fit for maintenance and replacement work in compatible commercial, industrial, and facility electrical distribution equipment.
• And one important point: 500 amps alone doesn't determine compatibility. Before using the NM632500 as a replacement, compare the part number, pole count, physical dimensions, mounting arrangement, terminal configuration, voltage, and A.I.C. rating with the breaker and equipment already in place. For legacy electrical systems, getting those details right matters most.