Schneider C2535E250 ComPacT NSX250 Trip Unit 3P 250 A MicroLogic 5

The Schneider Electric C2535E250 is the MicroLogic 5.2E electronic trip unit for the ComPacT NSX250 circuit breaker, rated 250 A at 40°C. It delivers 3-pole LSI protection with integrated energy metering and an LCD multimeter display for electrical power distribution applications.

Technical specifications:

• Commercial reference: C2535E250
• Manufacturer: Schneider Electric
• EAN:
• Series / range: ComPacT NSX100...250 new generation
• Trip unit name: MicroLogic 5.2E
• Technology: Electronic
• Compatible circuit breaker: ComPacT NSX250 new generation
• Number of poles: 3P
• Trip unit rating: 250 A at 40°C
• Rated voltage: 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): 100...250 A, 9 adjustable settings
• Long-time delay (tr): 15...400 s at 1.5x Ir
• Short-time pick-up (Isd): 1.5...10 x Ir, 9 adjustable settings
• Short-time delay (tsd): 0...0.4 s (I²t=off), 0.1...0.4 s (I²t=on)
• Instantaneous pick-up (Ii): 1.5...12 x In
• Thermal memory: 20 minutes before and after tripping
• Zone selective interlocking (ZSI): Yes
• Display: LCD multimeter
• IP protection: IP40 (IEC 60529)
• Electric shock protection class: Class II
• Pollution degree: 3 (IEC 60947-1)
• Operating temperature: -25...70°C
• Standard: EN/IEC 60947-2
• Package weight: 556 g

Features and benefits:

• Fully adjustable LSI protection with 9 settings each for Ir and Isd, enabling precise overcurrent discrimination
• Integrated energy metering with power quality data, demand values, and time-stamped event logging
• Zone selective interlocking (ZSI) reduces fault clearance time in coordinated multi-level protection schemes
• Thermal memory retains circuit temperature state for 20 minutes, preventing nuisance re-closing after tripping
• LED local signaling: ready (green), pre-alarm at 90% Ir (orange), overload at 105% Ir (red)

Applications:

• Main and feeder circuit protection in low-voltage distribution switchboards
• Industrial power distribution panels requiring coordinated protection with zone selective interlocking
• Energy management installations where integrated metering and power quality monitoring are required

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

Also known as: Schneider C2535E250, Schneider Electric C2535E250, MicroLogic 5.2E trip unit, NSX250 electronic trip unit.