NGB1B070B - 70 Amp Circuit Breaker

NGB1B070B - 70 Amp Circuit Breaker

Need an NGB1B070B circuit breaker for an existing panelboard? This Type NGB molded-case circuit breaker is a 1-pole, 70-amp unit designed for compatible panelboard applications. It measures 5.0 inches high, 1.0 inch wide, and 3.06 inches deep, so check the physical size and electrical ratings when replacing a breaker in older equipment. The NGB1B070B is rated 25k AIC at 277VAC and 100k AIC at 120VAC, is HACR rated, and has a 40.25°C rating. Load-side terminals are included. For electricians and maintenance teams working with legacy electrical equipment, this breaker is primarily about getting the right form, fit, and function for a system that already uses the NGB configuration. Its molded case construction is built to last when the breaker is correctly installed and used within its specified ratings. Before installation, always check the full part number and specifications against the breaker being replaced and the panelboard requirements, not just the 70 amp rating.

Key Features and Benefits

• 70 amp, 1-pole breaker for applications that require this specific configuration.
• Type NGB molded case design for compatible panelboard equipment.
• Rated 25k AIC at 277VAC and 100k AIC at 120VAC.
• HACR rated for applications where this rating is required.
• Panelboard-mount configuration for the appropriate NGB equipment.
• Load-side terminals included with the breaker.
• Measures 5.0" H x 1.0" W x 3.06" D, making it easier to compare the physical footprint with an existing unit.
• Well suited to maintenance and replacement work in compatible legacy electrical systems.
• Molded case construction is built to last under the intended operating conditions.

Technical Specifications

• Part Number: NGB1B070B
  
• Type: NGB
  
• Breaker Type: Molded Case Circuit Breaker
  
• Amperes: 70A
  
• Poles: 1
  
• AIC Rating & Volts: 25k @ 277VAC; 100k @ 120VAC
  
• Height: 5.0 in.
  
• Width: 1.0 in.
  
• Depth: 3.06 in.
  
• Temperature Rating: 40.25°C
  
• Mounting: Panelboard Mount
  
• HACR Rated: Yes
  
• Load-Side Terminals: Included
  

Material Compliance and Certifications

• The available specifications identify the NGB1B070B as HACR rated. No other material-compliance certifications have been provided, so don't assume additional certifications or listings.
• If a particular certification, listing, or code requirement applies to your project, check the breaker specifications and the existing equipment requirements before installation.

Where It Works Best

• The NGB1B070B makes the most sense when you're maintaining or repairing a compatible panelboard that already calls for a Type NGB breaker. It's especially relevant in legacy electrical systems where the goal isn't to change the equipment—you need a breaker with the correct physical configuration and electrical characteristics.
• That distinction matters when replacing older circuit breakers. Matching amperage alone isn't enough. Check the part number, number of poles, AIC and voltage ratings, dimensions, mounting style, and other application requirements. If your equipment specifies the NGB1B070B 70 amp 1-pole breaker, those details help confirm you're looking at the right configuration for the job.