NB31200F - 1200 Amp Max. *Frame Only*

NB31200F - 1200 Amp Thermal Magnetic Circuit Breaker (Frame Only)

Looking for a powerful, dependable backbone for your industrial or commercial electrical system? The NB31200F 1200 Amp Thermal Magnetic Circuit Breaker (Frame Only) delivers reliable performance where it matters most. Built for demanding environments, it offers top-tier protection without unnecessary complexity—just pair it with a compatible trip unit, and it’s ready to go.

Key Features and Benefits

• Massive 1200 Amp capacity: Perfect for heavy-duty electrical systems that demand high current control.
• Thermal magnetic protection: Covers you against both overloads and short circuits without a fuss.
• High interrupting capability: Rated at 22 kA @ 600 VAC, 30 kA @ 480 VAC, and 42 kA @ 240 VAC to handle voltage variations confidently.
• Rated for 40 °C ambient conditions: Designed to operate consistently in warmer industrial settings, so you don’t have to worry about heat diminishing performance.

Technical Specifications

• Poles: 3‑pole configuration for three-phase electrical systems.
• Amperage: 1200 A rating—ideal for large loads and critical circuits.
• Interrupting Capacity:
  • 22 kA at 600 VAC
  • 30 kA at 480 VAC
  • 42 kA at 240 VAC
• Frame Type: NB series high‑capacity frame.
• Dimensions:
  • Width: 8.25 inches
  • Length: 16 inches
  • Depth: 5.50 inches
• Weight: Approximately 57 lb—solid build without going overboard.
• Temperature Rating: Certified for 40 °C ambient use to maintain consistent performance even in warm environments.

Material Compliance and Certifications

• Manufactured to meet stringent industry safety requirements, this circuit breaker uses high‑quality materials that comply with all relevant electrical standards. You can count on durable, trusted components that deliver safety and uptime, especially during critical maintenance tasks or in demanding industrial settings.

Suitability

• This frame‑only breaker is at home in older installations that need a reliable, high‑capacity protective device without complete system redesign. It’s a smart choice for maintenance teams upgrading or rebuilding existing panels, offering dependable protection and minimal hassle—just add the matching trip unit and you’re all set.