NEB2B045B - 45 Amp Circuit Breaker

NEB2B045B - 45 Amp Circuit Breaker

When you replace a circuit breaker in an existing panelboard, the details must match. The NEB2B045B is a 45-amp, 2-pole Type NEB molded-case circuit breaker made for compatible panelboard applications. It carries an interrupting rating of 35k AIC at 480VAC and 85k AIC at 240VAC and measures 5.5 inches high, 2.0 inches wide, and 3.0 inches deep. The breaker is also HACR rated, has a 40.25°C rating, and includes load-side terminals. For electricians, maintenance departments, and facility teams working with existing equipment, the NEB2B045B can be a good fit when these exact specifications are required. Instead of changing the existing setup, it lets you match the breaker's amperage, pole count, mounting style, dimensions, and electrical ratings to the application. It's a straightforward molded case breaker built to last when installed and used within its specified ratings.

Key Features and Benefits

• 45-amp rating for applications that specifically require a 45A breaker.
• Two-pole design for compatible electrical systems and panelboards.
• Type NEB configuration helps maintain the correct form and fit in equipment designed for this breaker type.
• Rated 35k AIC at 480VAC and 85k AIC at 240VAC.
• Panelboard mount configuration for compatible installations.
• HACR rated for applications where this designation is required.
• Load-side terminals are included, providing the specified load connection arrangement.
• At 5.5" H × 2.0" W × 3.0" D, the breaker's dimensions can be checked against the existing unit and available panelboard space.
• Built for lasting service when correctly installed, maintained, and operated within its intended specifications.

Technical Specifications

• Part Number: NEB2B045B
  
• Product Type: Molded Case Circuit Breaker
  
• Type: NEB
  
• Amperage: 45A
  
• Poles: 2
  
• AIC Rating: 35k @ 480VAC; 85k @ 240VAC
  
• Dimensions:
  • Height: 5.5 in.
  • Width: 2.0 in.
  • Depth: 3.0 in.
• Mounting: Panelboard Mount
  
• Temperature Rating: 40.25°C
  
• HACR Rated: Yes
  
• Terminals: Includes Load-Side Terminals
  

Material Compliance and Certifications

• Based on the available specifications, the NEB2B045B is HACR rated. This may be important when working with compatible heating, air-conditioning, or refrigeration equipment that calls for an HACR-rated breaker.
• No other material compliance or certification information has been provided for this part number, so do not assume additional certifications. Always check the breaker nameplate and the equipment and installation requirements before use.

Where It Works Best

• The NEB2B045B is best suited to existing panelboards and electrical distribution equipment designed to accept a Type NEB, 45 amp, 2-pole molded case circuit breaker with the ratings and dimensions listed above. This makes particular sense for repair and maintenance work where the goal is to keep the original equipment configuration.
• Before replacing an existing breaker, compare more than just the part number. Check the amperage, number of poles, voltage, AIC rating, dimensions, mounting method, and terminal configuration against the breaker being replaced and the panelboard requirements. If those specifications match, the NEB2B045B provides the appropriate form, fit, and function for the intended application.