General

• Product range: ComPacT NSXm (new generation)
• Type: Molded Case Circuit Breaker (MCCB)
• Application: Distribution / line protection
• Standards: IEC / EN 60947-2
• Utilization category: Category A
• Suitability for isolation: Yes

 Ratings (core requirement: up to 160 A)

• Rated current (In): 16 → 160 A
• Rated operational voltage (Ue): up to 690 V AC, 50/60 Hz
• Network: AC systems

 Breaking capacity (Icu – typical ranges)

Depending on performance class (B, F, N):

• 25 kA @ 415 V (B type)
• 36 kA @ 415 V (F type)
• 50 kA @ 415 V (N type)

 Insulation & dielectric properties

• Rated insulation voltage (Ui): 800 V
• Impulse withstand voltage (Uimp): 8 kV

 Trip units (protection technology)

Thermal-magnetic

• TM-D (standard)
• Protection: L (overload) + I (short-circuit)

Electronic (Micrologic)

• Micrologic 2 / 4 / 5 (depending on model)
• Functions:
  • L: overload
  • S: short-time
  • I: instantaneous
  • Optional R: earth leakage

 Protection functions

• Overload protection (thermal/electronic)
• Short-circuit protection
• Optional:
  • Earth leakage (Vigi / integrated versions)
  • Adjustable protection curves
  • Energy metering (Micrologic)

 Mechanical & construction

• Frame size: NSXm (compact frame)
• Mounting:
  • Fixed
  • DIN rail (some models)
• Poles:
  • 3P / 4P
• Typical dimensions:
  • Width ≈ 80 mm
  • Height ≈ 137 mm

 Performance & durability

• Mechanical durability: ~20,000 operations
• Electrical durability:
  • Up to 10,000 cycles (depending on load)

Key features (new generation advantages)

• Compact size (smallest in NSX range)
• EverLink connectors (high reliability terminals)
• Modular accessories (aux contacts, shunt trip, etc.)
• Communication-ready (with Micrologic)
• Optional integrated earth leakage protection