NB3700 - 700 Amp Circuit Breaker

NB3700 - 700 Amp Circuit Breaker

The NB3700 is a 700-amp, 3-pole thermal-magnetic circuit breaker for electrical equipment that requires a compatible NB-type breaker. It has an interchangeable trip unit, a 40°C rating, and comes with load-side terminals. Interrupting ratings are 22kA at 600VAC, 30kA at 480VAC, and 42kA at 240VAC. The breaker measures 16 inches high, 8.25 inches wide, and 5.5 inches deep. If you're replacing an existing NB3700, check the part number, electrical ratings, and physical dimensions. Matching the amperage, poles, voltage, AIC rating, and trip configuration helps ensure the breaker matches the equipment. The NB3700 is built to last when used within its specified ratings and properly installed, maintained, and protected.

Key Features and Benefits

• 700 amp rating
• 3-pole configuration
• Thermal magnetic protection
• Interchangeable trip unit
• 40°C rated
• 22kA AIC at 600VAC
• 30kA AIC at 480VAC
• 42kA AIC at 240VAC
• Load-side terminals included
• Designed for equipment requiring a compatible NB-type breaker

Technical Specifications

• Part Number: NB3700
  
• Type: NB
  
• Amperage: 700A
  
• Poles: 3
  
• Breaker Type: Thermal Magnetic
  
• Trip Unit: Interchangeable
  
• Temperature Rating: 40°C
  
• AIC Rating:
  • 22kA @ 600VAC
  • 30kA @ 480VAC
  • 42kA @ 240VAC
• Height: 16.0 in.
  
• Width: 8.25 in.
  
• Depth: 5.5 in.
  
• Load-Side Terminals: Included
  

Material Compliance and Certifications

• Specific certification numbers and material compliance information were not provided in the available specifications. Check the breaker label and applicable documentation if your installation requires a particular certification or compliance standard.

Where It Works Best

• The NB3700 is intended for existing electrical distribution equipment that calls for a compatible 700A, 3-pole NB-type circuit breaker. It's a practical choice for maintenance and replacement work where the original form, fit, ratings, and electrical function must match.
• Before installation, verify the part number, dimensions, amperage, number of poles, voltage, AIC rating, and trip configuration against the existing equipment.