Schneider C4047E400 MicroLogic Vigi 7.3 E Trip Unit

The C4047E400 Schneider is a MicroLogic Vigi 7.3 E electronic trip unit designed for advanced protection and monitoring 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 an energy meter with an LCD display, enabling real-time monitoring of energy consumption and power quality. Compliant with IEC 60947-2 standards, it ensures reliable performance in industrial and commercial environments.

C4047E400 Technical Specifications

• Model: C4047E400
• Type: Electronic Trip Unit with Energy Meter
• 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, 4D, 3D + OSN, or 3D
• Neutral Position: Left
• Trip Unit Technology: Electronic
• Operational Voltage: 440V AC 50/60Hz
• Trip Unit Protections: L (Long-Time), S (Short-Time), I (Instantaneous), R (Earth Leakage)
• Application: Distribution with Energy Metering

Protection Functions

• Long-Time Protection (Overload): Adjustable 160A – 400A (9 settings)
• Long-Time Delay: Adjustable
  • 15 to 400s at 1.5 x Ir
  • 0.5 to 16s at 6 x Ir
  • 0.35 to 11s at 7.2 x Ir
• Neutral Protection Settings:
  • 0.5 x Ir (3D + N/2)
  • 1 x Ir (4D)
  • 1.6 x Ir (3D + OSN)
  • No protection (3D)
• Thermal Memory: 20 minutes before and after tripping
• Short-Time Protection: Adjustable 1.5 to 10 x Ir
• Short-Time Delay: Adjustable
  • 0 to 0.4s (I²t OFF)
  • 0.1 to 0.4s (I²t ON)
• Instantaneous Protection: Adjustable 1.5 to 12 x In
• 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
• Display Module: LCD for energy measurement, event history, and fine adjustment settings

C4047E400 Physical Specifications

• Gross Weight: 1.954 kg

Dimensions:

• Height: 95 mm
• Width: 113 mm
• Depth: 185 mm

Additional Features

• Operating Temperature: -25°C to 70°C
• Storage Temperature: -40°C to 85°C
• Standards Compliance: IEC 60947-2, Pollution Degree 3
• Electrical Shock Protection: Class II
• IP Rating: IP40 (IEC 60529)
• Communication & Data:
  • Energy metering and demand values
  • Earth leakage current monitoring
  • Time-stamped event histories and alarm settings
  • Maintenance indicators, max/min meters, test reports, power quality

Environmental Impact

• Carbon Footprint: 184 kg CO₂-eq (Total Life Cycle)
• Recycled Metal Content: 0%

Key Features & Benefits

✅ Integrated Energy Metering: Real-time LCD readout of power quality, demand, and consumption.

✅ Advanced Earth Leakage Protection: Adjustable sensitivity and time delay with pre-alarm function for enhanced safety.

✅ Neutral Protection Flexibility: Multiple neutral protection options for 4-pole applications.

✅ EcoStruxure Power Ready: Fully compatible with PowerTag NSX for connected monitoring and energy management.

✅ Comprehensive Protection: Combines overload, short-circuit, instantaneous, and earth leakage functions in a compact design.

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