NGB1B030B - 30 Amp Circuit Breaker

NGB1B030B - 30 Amp Circuit Breaker

When you're replacing a circuit breaker in an existing panelboard, the details matter. The NGB1B030B is a 30-amp, 1-pole Type NGB molded-case circuit breaker designed for compatible panelboard applications. It measures 5.0 inches high, 1.0 inch wide, and 3.06 inches deep, so you can compare the dimensions with the breaker you're replacing before installation. Electrically, the NGB1B030B is rated 25k AIC at 277VAC and 100k AIC at 120VAC. It's also HACR-rated, carries a 40.25°C rating, and comes with load-side terminals. This breaker makes the most sense when you're maintaining an existing or legacy electrical system that specifically calls for the NGB type and these ratings. Rather than changing the established setup, you can match the part number, dimensions, pole count, amperage, mounting style, and interrupting rating to the equipment already in place. Straightforward specs, a familiar molded-case design, and construction built to last make the NGB1B030B a practical option for the right application.

Key Features and Benefits

• 30 amp, 1-pole breaker for compatible electrical applications.
• Type NGB molded-case design for equipment that requires this specific breaker type.
• Panelboard mount configuration for compatible panelboard installations.
• Rated 25k AIC at 277VAC and 100k AIC at 120VAC.
• HACR rated for applications where this designation is required.
• 40.25°C rating based on the available product specifications.
• Load-side terminals included.
• Compact 5.0" H × 1.0" W × 3.06" D dimensions make it easier to check physical fit against an existing breaker.
• Built to last when correctly matched, installed, and operated within its specified ratings.

Technical Specifications

• Part Number: NGB1B030B
  
• Product Type: Molded Case Circuit Breaker
  
• Type: NGB
  
• Amperage: 30A
  
• Poles: 1
  
• A.I.C. Rating: 25k @ 277VAC; 100k @ 120VAC
  
• Height: 5.0 in.
  
• Width: 1.0 in.
  
• Depth: 3.06 in.
  
• Mounting: Panelboard Mount
  
• Temperature Rating: 40.25°C
  
• HACR Rated: Yes
  
• Load-Side Terminals: Included
  

Material Compliance and Certifications

• The available specifications identify the NGB1B030B as HACR rated. No other material compliance certifications or regulatory listings have been provided, so we don't make assumptions about them. For jobs that require a particular listing, certification, or material standard, check the breaker nameplate and applicable manufacturer documentation before installation.

Where It Works Best

• The NGB1B030B is best suited to compatible panelboards and legacy electrical equipment that already call for a 30-amp, single-pole Type NGB circuit breaker. It's a sensible choice for maintenance and replacement work where keeping the original form, fit, and function is important.