NB3800 - 700 Amp Circuit Breaker

NB3800 - 700 Amp Circuit Breaker

If you’re working with heavy-duty electrical systems, you know reliability isn’t optional—it’s everything. The NB3800 700 Amp Circuit Breaker is designed to handle the kind of demanding environments where downtime simply isn’t acceptable. With a three-pole thermal magnetic design, this breaker keeps your equipment protected against overloads and short circuits, while still giving you flexibility with its interchangeable trip unit. Add in its 40°C rating and rugged build, and you’ve got a breaker that’s built to last and built to perform, even under pressure.

Key Features and Benefits

• Serious Power Handling: Rated at 700 amps, this breaker is made for high-demand applications where dependable circuit protection is critical.
• Three-Pole Coverage: Protects across all three phases, keeping your power balanced and your system safe.
• Customizable Protection: The interchangeable thermal magnetic trip unit lets you adapt to your specific setup instead of being locked into a one-size-fits-all solution.
• Tough Construction: Built to stand up to harsh industrial conditions, complete with load-side terminals for secure, long-lasting connections.
• Ready for Heat: With its 40°C rating, it operates smoothly in environments that put other breakers to the test.
  

Technical Specifications

• Weight: 57 lbs
  
• Dimensions:
  • Width: 8.25 inches
  • Length: 16.00 inches
  • Depth: 5.50 inches
• Poles: 3
  
• Amperage: 700A
  
• Interrupting Capacity:
  • 22kA at 600VAC
  • 30kA at 480VAC
  • 42kA at 240VAC
• Frame Type: NB
  
• Notes: Thermal Magnetic Circuit Breaker with Interchangeable Trip Unit, includes load-side terminals, 40°C rated.
  

Material Compliance and Certifications

• Industry Standards: The NB3800 is built to meet strict industry standards for safety and performance. Its thermal magnetic mechanism provides consistent, predictable trips, while the replaceable trip unit allows you to fine-tune protection as your system demands change. It’s a dependable solution you can count on to keep your infrastructure running safely.
  

Suitability

• This breaker is a go-to choice for electricians, contractors, and facility managers who need reliable, high-capacity protection in places like manufacturing plants, industrial facilities, and large commercial buildings. It’s especially valuable in environments where systems run around the clock and safety can’t be compromised. If you need a breaker that’s durable, adaptable, and proven to perform, the NB3800 is built for the job.