Schneider C2542G250 MicroLogic 2.2 G Electronic Trip Unit

The C2542G250 Schneider is a MicroLogic 2.2 G electronic trip unit designed for generator protection in low-voltage power systems. Built for use with ComPacT NSX250 circuit breakers, it supports 4-pole configurations and is rated for 250 A at 40 °C.

It provides adjustable long-time and short-time protection, with fixed instantaneous settings for fast response. Ideal for generator and backup installations, the unit includes LED status indicators and complies with IEC 60947-2 standards for safe and reliable operation in industrial and commercial environments.

Technical Specifications

• Model: C2542G250
• Type: MicroLogic 2.2 G Electronic Trip Unit
• Brand: Schneider Electric
• Range: ComPacT NSX New Generation

Power & Performance

• Rated Current: 250 A at 40°C
• Poles: 4P (Four Poles)
• Protected Poles: 3D + N/2, 4D, or 3D (Selectable Neutral Protection)
• Trip Unit Technology: Electronic
• Application: Generator Protection
• Protection Functions:
  • L: Long-time overload protection (adjustable)
  • S: Short-time short-circuit protection with fixed delay (adjustable)
  • I: Instantaneous short-circuit protection (fixed)
• Rated Operational Voltage (Ue): 690V AC 50/60Hz
• Network Type: AC
• Network Frequency: 50/60 Hz

Advanced Protection Features

• Long-time Protection Range (Ir): 100…250 A (9 settings adjustable)
• Long-time Protection Delay (tr): Fixed
  • 15 s at 1.5 x Ir
  • 0.35 s at 7.2 x Ir
  • 0.5 s at 6 x Ir
• Neutral Protection Settings:
  • 0.5 x Ir (3D + N/2)
  • 1 x Ir (4D)
  • No protection (3D)
• Short-time Protection Range (Isd): 1.5…9 x Ir (adjustable)
• Short-time Delay (tsd): Fixed
• Instantaneous Protection (Ii): Fixed at 3000 A
• Thermal Memory: 20 minutes before and after tripping

User Interface & Local Signaling

• Ready to Operate: Flashing Green LED
• Overload Indications:
  • Orange LED at 90% Ir
  • Red LED at 105% Ir
• Additional: Includes lead-seal device to protect settings

C2542G250 Physical Specifications

• Gross Weight: 568 g

Dimensions:

• Height: 6.5 cm
• Width: 9.5 cm
• Length: 15.0 cm

Environmental Specifications

• Standards: EN/IEC 60947-2
• Shock Protection Class: Class II
• Pollution Degree: 3 (IEC 60947-1)
• IP Degree of Protection: IP40 (IEC 60529)
• Ambient Temperature for Operation: -25°C to +70°C
• Ambient Temperature for Storage: -50°C to +85°C
• Carbon Footprint: 87 kg CO₂-eq (Total Life Cycle)
• Recycled Metal Content: 0%

Key Features & Benefits

✅ 4-Pole Generator Protection: Advanced trip unit with selectable neutral protection for flexible installation.

✅ Reliable Overload Indication: Multi-stage LED alerts provide clear visual status and system monitoring.

✅ Secure Settings: Includes lead-seal device to prevent unauthorized changes to protection settings.

✅ Compact & Robust Design: Designed to fit ComPacT NSX250 circuit breakers perfectly.

✅ EcoStruxure Ready: Fully compatible with PowerTag NSX for advanced energy monitoring and EcoStruxure Power architecture integration.

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