Schneider C4045E400 ComPacT NSX400 Trip Unit 4P 400 A MicroLogic 5

The Schneider Electric C4045E400 is a MicroLogic 5.3E electronic trip unit for ComPacT NSX400 and NSX630 new generation circuit breakers, rated 400 A at 40°C. It delivers LSI protection - long-time, short-time, and instantaneous - with an integrated LCD multimeter, energy metering, and time-stamped event recording for advanced power distribution management.

Technical specifications:

• Commercial reference: C4045E400
• Manufacturer: Schneider Electric
• EAN:
• Series / range: ComPacT NSX400/630 new generation
• Trip unit name: MicroLogic 5.3E
• Trip unit technology: Electronic
• Number of poles: 4P
• Trip unit rating: 400 A at 40°C
• Rated voltage [Ue]: 690 V AC 50/60 Hz
• Network type: AC, 50/60 Hz
• Protection function: LSI (long-time, short-time, instantaneous)
• Long-time pick-up [Ir] adjustment range: 160...400 A, 9 settings
• Short-time pick-up [Isd] adjustment range: 1.5...10 x Ir, 9 settings
• Instantaneous pick-up [Ii] adjustment range: 1.5...12 x In
• Zone selective interlocking (ZSI): Yes
• Thermal memory: 20 minutes before and after tripping
• Display: LCD
• Electrical shock protection class: Class II
• IP protection rating: IP40 per IEC 60529
• Pollution degree: 3 per IEC 60947-1
• Operating temperature: -25...70°C
• Storage temperature: -40...85°C
• Mounting: Fixed
• Weight: 1.785 kg
• Standard: EN/IEC 60947-2

Features and benefits:

• Fully adjustable LSI protection with 9 independent settings each for long-time and short-time pick-up thresholds
• Integrated LCD multimeter with energy metering, power quality analysis, demand values, and time-stamped event recording
• Zone selective interlocking (ZSI) enables faster, selective tripping to minimise downtime
• Thermal memory holds thermal state for 20 minutes before and after tripping, preventing unsafe restart under overload
• LED local indication: green flashing (device ready), orange (90% Ir warning), red (105% Ir alarm)

Applications:

• Main and sub-main distribution boards in industrial and commercial buildings
• Electrical power distribution systems requiring coordinated selective protection
• Installations with integrated energy monitoring and power quality measurement requirements

Compliant with EN/IEC 60947-2. Part of the Schneider Electric ComPacT NSX new generation range.

Also known as: Schneider C4045E400, Schneider Electric C4045E400, MicroLogic 5.3E trip unit NSX400.