NEB2B040B - 40 Amp Circuit Breaker

NEB2B040B - 40 Amp Circuit Breaker

When you're replacing a breaker in an existing panelboard, getting the details right matters. The NEB2B040B is a 40-amp, 2-pole Type NEB molded-case circuit breaker for panelboard-mounted applications. It has an interrupting rating of 35k AIC at 480VAC and 85k AIC at 240VAC, a 40.25°C rating, and is HACR rated. Load-side terminals are included.

Size is another detail worth checking before installation. The NEB2B040B measures approximately 5.5 inches high, 2 inches wide, and 3 inches deep. Compare those dimensions, along with the Type NEB configuration, amperage, pole count, mounting style, and voltage ratings, with the existing breaker and panelboard requirements.

For maintenance work on compatible legacy electrical equipment, this breaker provides the specific form, fit, and function needed when an NEB2B040B is called for. Its molded case construction is built to last when properly applied, installed, and maintained. As always, confirm the complete set of electrical and physical specifications rather than relying on appearance or amperage alone.

Key Features and Benefits

• 40A rating with two poles for compatible electrical applications.
• Type NEB molded case construction for equipment designed around this breaker configuration.
• Panelboard-mount for the intended mounting arrangement.
• Rated 35k AIC at 480VAC and 85k AIC at 240VAC.
• HACR-rated for applicable heating, air-conditioning, and refrigeration equipment.
• 40.25°C rating as specified for this breaker.
• Load-side terminals included as part of the configuration.
• Compact 5.5" H x 2.0" W x 3.0" D dimensions make it straightforward to compare physical fit with the breaker being replaced.
• Built to last for its intended application when installed and maintained correctly.

Technical Specifications

• Part Number: NEB2B040B
  
• Type: NEB
  
• Breaker Type: Molded Case Circuit Breaker
  
• Mounting: Panelboard Mount
  
• Poles: 2
  
• Amperage: 40A
  
• AIC Rating at 480VAC: 35k
  
• AIC Rating at 240VAC: 85k
  
• Temperature Rating: 40.25°C
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 5.5 in.
  • Width: 2.0 in.
  • Depth: 3.0 in.
• Terminals: Includes Load-Side Terminals
  

Material Compliance and Certifications

• The NEB2B040B is HACR rated, making that specification easy to verify when you're matching a breaker for an applicable heating, air-conditioning, or refrigeration installation. The available specifications also list a 40.25°C rating.
• No other material-compliance certifications or environmental declarations are identified in the provided specifications. If a project requires specific certifications or compliance documentation, check the breaker markings and applicable equipment documentation before installation.

Where It Works Best

• The NEB2B040B is intended for existing and legacy panelboards that are designed to accept a Type NEB molded case circuit breaker with these specifications. It's a sensible fit for maintenance and replacement work where the goal is to preserve the original equipment's required form, fit, and function.
• Before replacing an existing breaker, take a minute to compare more than the amp rating. Check the NEB2B040B part number, two-pole configuration, 40A rating, voltage and AIC ratings, dimensions, panelboard mounting arrangement, and load-side terminal configuration. Each detail can matter when determining whether a breaker suits a particular installation.
• Select electrical equipment based on the panelboard and application requirements. Confirm final compatibility before installation, and have qualified personnel perform electrical work in accordance with applicable codes and equipment requirements.