NGB2B050B - 50 Amp Circuit Breaker

NGB2B050B - 50 Amp Circuit Breaker

Need an NGB2B050B circuit breaker for an existing panelboard? This 50-amp, 2-pole molded-case circuit breaker is designed for applications that call for an NGB Type breaker with the correct physical fit and electrical ratings. The NGB2B050B is rated 25k AIC at 480VAC and 100k AIC at 240VAC and measures approximately 5.0 inches high, 2.0 inches wide, and 3.06 inches deep. It is HACR rated, has a 40.25°C rating, mounts in a compatible panelboard, and comes with load-side terminals. Those details matter when you're working on existing electrical equipment. A breaker may have the right amperage but still be wrong for the application because of its mounting, dimensions, pole configuration, or interrupting rating. That's why the NGB2B050B is best considered when you match its specifications to the breaker and equipment already in place. For maintenance and replacement work involving compatible NGB equipment, it provides the form, fit, and function the application calls for, with molded-case construction built to last.

Key Features and Benefits

• 50 amp rating for applications specified for a 50A breaker.
• 2-pole design for compatible two-pole circuits and panelboard configurations.
• NGB Type molded case construction that's built to last in its intended application.
• Rated 25k AIC at 480VAC and 100k AIC at 240VAC.
• Panelboard mount configuration for compatible equipment.
• HACR rated for applications that require an HACR-rated breaker and meet the remaining specifications.
• Load-side terminals included with the breaker.
• Compact 5.0" H x 2.0" W x 3.06" D dimensions make it easier to compare physical fit with an existing breaker.
• Well suited to maintenance and replacement work in compatible legacy electrical systems.

Technical Specifications

• Part Number: NGB2B050B
  
• Type: NGB
  
• Breaker Type: Molded Case Circuit Breaker
  
• Amperage: 50 A
  
• Poles: 2
  
• AIC Rating & Voltage: 25k @ 480VAC; 100k @ 240VAC
  
• Mounting: Panelboard Mount
  
• HACR Rated: Yes
  
• Temperature Rating: 40.25°C
  
• Height: 5.0 in.
  
• Width: 2.0 in.
  
• Depth: 3.06 in.
  
• Load-Side Terminals: Included
  

Material Compliance and Certifications

• The NGB2B050B is HACR rated and carries a specified 40.25°C rating. Its stated interrupting capacities are 25k AIC at 480VAC and 100k AIC at 240VAC.
• No other material compliance standards or certifications were provided with the available product specifications. If a particular certification, code requirement, or material standard matters for your installation, verify it on the breaker labeling and in the applicable equipment documentation rather than assuming compliance.
  

Where It Works Best

• The NGB2B050B is a good fit for existing and legacy electrical equipment that specifically requires a compatible NGB Type 50A, 2-pole molded case circuit breaker. It's particularly relevant when you're maintaining a panelboard and need to preserve the existing equipment configuration rather than change it.
• And don't match a replacement breaker on amperage alone. Check the part number, number of poles, voltage, AIC rating, mounting method, dimensions, terminal configuration, and breaker type against the existing equipment. For the NGB2B050B, those details are key to determining whether it fits the job. A qualified electrical professional should confirm final compatibility and installation in accordance with applicable electrical codes.