Schneider C4037E400 MicroLogic Vigi 7.3 E Trip Unit

The C4037E400 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 3-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.

Technical Specifications

• Model: C4037E400
• 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: 3P (Three Poles)
• Protected Poles: 3D
• 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
• 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

C4037E400 Physical Specifications

• Gross Weight: 1.862 kg

Dimensions:

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

C4037E400 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 measurement
  • Time-stamped event histories and alarm settings
  • Maintenance indicators, max/min meters, and test reports

Environmental Impact

• Carbon Footprint: 183 kg CO₂-eq (Total Life Cycle)
• Recycled Metal Content: 0%

Key Features & Benefits

✅ Integrated Energy Metering: Full LCD readout of energy use, demand current, and power quality.

✅ Advanced Earth Leakage Protection: Adjustable sensitivity and time delay with pre-alarm functionality.

✅ Visual Status Indication: Clear LEDs for operational readiness and overload levels.

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

✅ Versatile Protection: Combines overload, short-circuit, instantaneous, and earth leakage protections in one unit.

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