Schneider C4044V400 MicroLogic Vigi 4.3 Trip Unit

The C4044V400 Schneider is a MicroLogic Vigi 4.3 electronic trip unit designed for advanced protection in low-voltage power distribution systems. Specifically engineered for integration with ComPacT NSX400 and NSX630 circuit breakers, this unit supports 4-pole configurations and is rated for 400 A at 40 °C.

It offers comprehensive protection functions, including long-time (L), short-time (S), instantaneous (I), and earth-leakage (R) protection, with adjustable settings to suit various applications. The integrated earth leakage protection provides early fault detection with tripping functionality, enhancing system safety. Additionally, the unit features LED indicators for overload and readiness status, enabling real-time monitoring of system conditions. Compliant with IEC 60947-2 standards, it ensures reliable performance in industrial and commercial environments.

Technical Specifications

• Model: C4044V400
• Type: Electronic Trip Unit with Earth Leakage Protection
• Brand: Schneider Electric
• Range: ComPacT NSX New Generation

Power & Performance

• Rated Current: 400 A at 40°C
• Poles: 4P (Four Poles)
• Protected Poles: 3D + N/2 or 4D or 3D
• Neutral Position: Left
• Trip Unit Technology: Electronic
• Operational Voltage: 440V AC 50/60Hz
• Trip Unit Protections: L (Long-Time), So (Short-Time), I (Instantaneous), R (Earth Leakage)
• Application: Distribution

Protection Functions

• Long-Time Protection (Overload): Adjustable 160A – 400A (9 settings)
• Long-Time Delay: Fixed
  • 400s at 1.5 x Ir
  • 16s at 6 x Ir
  • 11s at 7.2 x Ir
• Neutral Protection Settings:
  • 0.5 x Ir (3D + N/2)
  • 1 x Ir (4D)
  • No protection (3D)
• Thermal Memory: 20 minutes before and after tripping
• Short-Time Protection: Adjustable 1.5 to 10 x Ir
• Short-Time Delay: Fixed
• Instantaneous Protection: Fixed at 4800A
• Earth Leakage Protection: Integrated (Class A)
  • Sensitivity Range: 0.3A / 0.5A / 1A / 3A / 5A / 10A (Adjustable)
  • Time Delay: Adjustable (0 ms / 60 ms / 150 ms / 500 ms / 1 s)
  • Earth Leakage Specific Mode: OFF using IΔn rotary switch
• Zone Selective Interlocking (ZSI): Not Available

Build & Design

• Mounting Mode: Fixed
• Local Signaling:
  • Flashing Green LED – Ready to operate
  • Red LED – Overload above 105% Ir
  • Orange LED – Overload above 90% Ir
  • Yellow Indicator – Residual current status

C4044V400 Physical Specifications

• Gross Weight: 2.378 kg

Dimensions:

• Height: 170 mm
• Width: 210 mm
• Depth: 250 mm

C4044V400 Additional Features

• Operating Temperature: -25°C to 70°C
• Storage Temperature: -50°C to 85°C
• Standards Compliance: IEC 60947-2, Pollution Degree 3
• Electrical Shock Protection: Class II
• IP Rating: IP40 (IEC 60529)

C4044V400 Environmental Impact

• Carbon Footprint: 189 kg CO₂-eq (Total Life Cycle)
• Recycled Metal Content: 0%

Key Features & Benefits

✅ Integrated Earth Leakage Protection: Fully adjustable sensitivity and time delay for ground fault protection.

✅ Neutral Protection Options: Selectable 3D, 3D+N/2, or full 4D protection for flexibility.

✅ Visual Status Indication: LED indicators for ready status, overload conditions, and residual current detection.

✅ EcoStruxure Power Ready: Supports PowerTag NSX for advanced energy monitoring and connectivity.

✅ Designed for NSX400/630: Perfect fit for 4-pole ComPacT NSX applications needing reliable earth leakage protection.

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