The Schneider Electric Compact NSX250N 3‑Pole 220 A Molded Case Circuit Breaker with MicroLogic 2.2 Trip Unit is a high‑performance protective device designed for low‑voltage AC electrical distribution systems.
Specifications
Parameter Specification
Manufacturer Schneider Electric
Product Series ComPacT NSX250N
Device Type Molded Case Circuit Breaker (MCCB)
Model / Trip Unit MicroLogic 2.2 M Electronic Trip Unit (220 A)
Poles 3P / 3D (three phases)
Rated Current (In) 220 A at 65 °C
Trip Unit Protection Functions L, So, I (Long‑time, Short‑time, Instantaneous)
Rated Operational Voltage (Ue) 690 V AC, 50/60 Hz
Network Type AC (Alternating Current)
Rated Insulation Voltage (Ui) 800 V AC
Rated Impulse Withstand (Uimp) 8 kV
Breaking Capacity (Icu) • 90 kA @ 220/240 V AC
• 50 kA @ 380/415 V AC
• Lower values at higher voltages per IEC standards
Utilisation Category Category A (general distribution)
Adjustable Protection Long‑time and short‑time adjustable settings; fixed instantaneous setting
Thermal Memory ~20 min before/after tripping
Local Signalling LED indications for ready/overload status
Mounting Mode Fixed (panel/switchboard)
Mechanical Durability ~20,000 operations
Electrical Durability Varies with voltage and usage
Protection Degree IP40
Standards Compliance IEC/EN 60947‑2