NEB3B040B - 40Amp Circuit Breaker

NEB3B040B - 40Amp Circuit Breaker

When you're replacing a breaker in an existing panelboard, getting the details right matters. The NEB3B040B is a 40-amp, 3-pole molded-case circuit breaker for compatible panelboard applications using the NEB breaker type. It has an interrupting rating of 35 kAIC at 480VAC and 85 kAIC at 240VAC, a 40°C rating, and an HACR rating. The breaker measures about 5.5 inches high, 3 inches wide, and 3 inches deep, and includes load-side terminals. It's a useful option for maintaining legacy electrical equipment where the existing setup calls for this particular combination of breaker type, amperage, poles, mounting style, and interrupting capacity.

Key Features and Benefits

• 40-amp rating for compatible circuits requiring a 40A breaker.
• Three poles for applications designed around a 3-pole configuration.
• NEB molded case design for compatible existing panelboards and electrical equipment.
• Panelboard mount configuration.
• HACR rated for applications where this rating is required.
• 40°C rated.
• Load-side terminals included with the breaker configuration.
• Built to last when properly installed and used within its stated ratings.

Technical Specifications

• Part Number: NEB3B040B
  
• Product Type: Molded Case Circuit Breaker
  
• Type: NEB
  
• Amperage: 40 Amps
  
• Poles: 3
  
• AIC Rating: 35k @ 480VAC; 85k @ 240VAC
  
• Mounting: Panelboard Mount
  
• Temperature Rating: 40°C
  
• HACR Rated: Yes
  
• Load-Side Terminals: Included
  
• Height: 5.5 in.
  
• Width: 3.0 in.
  
• Depth: 3.0 in.
  
• Ship Weight: 6.00 lbs.
  

Material Compliance and Certifications

The NEB3B040B is HACR rated and carries a 40°C rating. No additional material-compliance or certification information has been specified here. If a particular listing, certification, or material requirement matters for the installation, check the markings on the breaker and the documentation for the equipment it will be installed in.

Where It Works Best

The NEB3B040B is best suited to compatible panelboards and legacy electrical systems that call for an NEB-type, 40 amp, 3-pole molded case circuit breaker with these ratings and dimensions. It's especially relevant for repair and maintenance jobs where keeping the existing equipment in service depends on finding a breaker with the correct form, fit, and function.