Schneider C6344A570 MicroLogic Vigi 4.3 AL Trip Unit

The C6344A570 Schneider is a MicroLogic Vigi 4.3 AL electronic trip unit designed for reliable protection in low-voltage power distribution systems. Specifically engineered for integration with ComPacT NSX630 circuit breakers, this unit supports 4-pole configurations and is rated for 570 A at 40 °C.

It offers essential protection functions, including long-time (L), short-time (S), and instantaneous (I) protection, with adjustable settings to accommodate various applications. The integrated earth leakage alarm provides early fault detection without tripping, enhancing system reliability.

Technical Specifications

• Model: C6344A570
• Type: Electronic Trip Unit with Earth Leakage Alarm
• Brand: Schneider Electric
• Range: ComPacT NSX New Generation

Power & Performance

• Rated Current: 570 A at 40°C
• Poles: 4P (Four Poles)
• Protected Poles: 3D + N/2, 4D, or 3D (configurable)
• Trip Unit Technology: Electronic
• Operational Voltage: 440V AC 50/60Hz
• Trip Unit Protections: L (Long-Time), So (Short-Time with fixed delay), I (Instantaneous)
• Application: Distribution

Protection Functions

• Long-Time Protection (Overload): Adjustable 250A – 570A (9 settings)
• Long-Time Delay: Fixed
  • 11s at 7.2 x Ir
  • 16s at 6 x Ir
  • 400s at 1.5 x Ir
• 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 6900A
• Earth Leakage Alarm:
  • Provides alarm (no trip) via terminal block
  • Sensitivity Adjustment Range: 0.3A / 0.5A / 1A / 3A / 5A / 10A
  • Time Delay: Adjustable (0 ms / 60 ms / 150 ms / 500 ms / 1 s)
  • Earth Leakage Mode: OFF using IΔn rotary switch
• Neutral Protection Settings:
  • 0.5 x Ir (3D + N/2)
  • 1 x Ir (4D)
  • No protection (3D)
• 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

C6344A570 Physical Specifications

• Gross Weight: 2.371 kg

Dimensions:

• Height: 17.2 cm
• Width: 21.2 cm
• Depth: 24.9 cm

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)

Environmental Impact

• Carbon Footprint: 357 kg CO₂-eq (Total Life Cycle)
• Recycled Metal Content: 0%

Key Features & Benefits

✅ Earth Leakage Alarm: Built-in earth leakage detection sends an alarm without tripping, ensuring advanced fault monitoring and enhanced system safety.

✅ Comprehensive Protection: Combines overload, short-circuit, and instantaneous protection with configurable neutral settings and clear local status indicators.

✅ Compact & Robust: Ideal for use in both standard and demanding applications on ComPacT NSX630 systems.

✅ EcoStruxure Power Ready: Compatible with PowerTag NSX for enhanced energy management and system connectivity.

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