NEB3B100B - 100Amp Circuit Breaker

NEB3B100B - 100Amp Circuit Breaker

Need an NEB3B100B circuit breaker for an existing panelboard? This 100-amp, 3-pole molded-case circuit breaker is an NEB-type breaker made for panelboard-mounted applications. It carries an interrupting rating of 35 kA.I.C. at 480VAC and 85 kA.I.C. at 240VAC, and it is both 40°C and HACR rated. The breaker measures approximately 5.5 inches high, 3 inches wide, and 3 inches deep, with load-side terminals included. For maintenance and replacement work, those details matter. A breaker must match the system's electrical requirements, as well as the physical space and mounting arrangement. The NEB3B100B is especially useful for compatible legacy equipment where the goal is to maintain the original form, fit, and function. It's a straightforward molded-case breaker built to last and designed to do the job it was made for.

Key Features and Benefits

• 100-amp rating for applications designed around a 100A breaker.
• Three poles for compatible three-phase electrical systems.
• NEB-type construction to match equipment designed for this breaker style.
• Rated 35k A.I.C. at 480VAC and 85k A.I.C. at 240VAC.
• Panelboard mount configuration for compatible installations.
• Load-side terminals included for the specified connection arrangement.
• HACR rated for compatible heating, air-conditioning, and refrigeration applications where this rating is required.
• 40°C rated to match equipment calling for this specification.
• Compact 5.5" x 3.0" x 3.0" dimensions make checking the available mounting space straightforward.
• Built to last when correctly installed and used within its specified ratings.
  

Technical Specifications

• Part Number: NEB3B100B
  
• Type: NEB
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage: 100 Amps
  
• Poles: 3
  
• A.I.C. Rating: 35k @ 480VAC; 85k @ 240VAC
  
• Temperature Rating: 40°C
  
• HACR Rated: Yes
  
• Mounting: Panelboard Mount
  
• Load-Side Terminals: Included
  
• Height: 5.5 in.
  
• Width: 3.0 in.
  
• Depth: 3.0 in.
  

Material Compliance and Certifications

• The NEB3B100B is HACR rated and carries a 40°C rating based on the available specifications. Do not assume additional material-compliance certifications unless you can confirm them in the product documentation or labeling.
• As with any replacement circuit breaker, check the complete set of specifications before installation. The amperage, number of poles, voltage, A.I.C. rating, mounting arrangement, terminals, and physical dimensions should match the equipment requirements. Qualified electrical personnel should handle installation and complete it in accordance with applicable electrical codes and equipment requirements.
  

Where It Works Best

• The NEB3B100B is a good fit for compatible legacy panelboards and electrical equipment originally designed around an NEB type molded case circuit breaker. It makes sense for maintenance and replacement projects where the objective is to keep the existing equipment configuration and match the required breaker specifications.
• It can also be used in compatible HACR applications when the equipment specifically calls for an HACR-rated breaker with the same electrical characteristics. Before replacing an existing breaker, compare the NEB3B100B part number, 100A rating, three-pole configuration, A.I.C. ratings, dimensions, mounting style, and terminal arrangement with the existing equipment.