The MasterPact NT is a compact low-voltage air circuit breaker designed for reliable protection of electrical distribution systems. With ratings up to 1600 A, it is recognized as one of the smallest true power circuit breakers, making it ideal for installations where space is limited.

Technical Specifications

General Ratings

• Rated Current (In): 630 – 1600 A
• Rated Voltage (Ue): Up to 690 V AC
• Frequency: 50/60 Hz
• Poles: 3P / 4P

Breaking Capacity (IEC)

• Icu:
  • Up to 150 kA @ 415 V (L1 performance level)
• Ics:
  • Up to 100% of Icu

Short-Time Withstand Current

• Icw: Up to 42 kA (1 s)

Making Capacity

• Icm: Up to 330 kA peak

Operating Performance

• Breaking Time:
  • 25 ms (standard)
  • Down to 9 ms (high-performance versions)