NEB2B050B - 50 Amp Circuit Breaker

NEB2B050B - 50 Amp Circuit Breaker

The NEB2B050B is a 50-amp, 2-pole molded-case circuit breaker for compatible panelboard applications. If you're replacing a breaker in an existing electrical system, the details matter. This Type NEB breaker measures about 5.5 inches high, 2 inches wide, and 3 inches deep so that you can check its dimensions against the breaker currently installed. It has an interrupting rating of 35k AIC at 480VAC and 85k AIC at 240VAC. The breaker is also HACR-rated, has a 40.25°C temperature rating, and includes load-side terminals. For facilities and electrical systems that require this particular NEB configuration, it provides the form, fit, and electrical ratings needed to match the intended application. This straightforward breaker is built to last and is well suited to maintaining compatible legacy equipment.

Key Features and Benefits

• 50-amp rating for applications designed around a 50A circuit breaker.
• 2-pole design for compatible two-pole panelboard applications.
• Type NEB configuration helps match existing equipment that calls for this breaker type.
• Rated 35 kAIC at 480VAC and 85 kAIC at 240VAC.
• Panelboard-mount configuration for compatible electrical equipment.
• HACR-rated for applicable heating, air-conditioning, and refrigeration applications.
• Load-side terminals are included.
• Compact 5.5" H × 2.0" W × 3.0" D dimensions make it easier to compare the breaker with an existing installation.
• A practical choice for maintaining legacy equipment when you need to match the original breaker specifications.
• Built to last when installed and used in the proper application.

Technical Specifications

• Part Number: NEB2B050B
  
• Type: NEB
  
• Product Type: Molded Case Circuit Breaker
  
• Mounting: Panelboard Mount
  
• Poles: 2
  
• Amperage: 50A
  
• AIC Rating: 35k @ 480VAC; 85k @ 240VAC
  
• Dimensions:
  • Height: 5.5 in.
  • Width: 2.0 in.
  • Depth: 3.0 in.
• Temperature Rating: 40.25°C
  
• HACR Rated: Yes
  
• Load-Side Terminals: Included
  

Material Compliance and Certifications

• The NEB2B050B is HACR-rated and has a specified temperature rating of 40.25°C. This makes the breaker suitable for applicable heating, air-conditioning, and refrigeration equipment, provided its electrical ratings and configuration meet the system requirements.
• No other certifications or material-compliance declarations are included in the available specifications. Confirm any project-specific certification or compliance requirements before installation rather than assuming them.

Where It Works Best

• The NEB2B050B works best in compatible panelboards and existing electrical distribution systems that require a 50A, 2-pole Type NEB molded case circuit breaker. It's especially relevant when maintaining older equipment and you need to match the existing breaker instead of changing the panel or electrical system.
• Before using the breaker as a replacement, compare more than the amperage. Check the NEB type, two-pole configuration, panelboard mounting, voltage, AIC rating, dimensions, and terminal arrangement against the existing equipment's requirements.
• When those specifications match, the NEB2B050B provides a straightforward way to maintain the installation's original form and function: no unnecessary sales language, just the right set of specifications for equipment designed to use this breaker.