Schneider C40N3 ComPacT NSX400N Trip Unit 3P

The Schneider Electric C40N3 is a 3-pole ComPacT NSX400N basic frame rated at 400 A and 690 V AC, designed for electrical energy distribution. The frame is supplied without a protection unit, allowing a separately selected trip unit to be fitted for tailored protection. It achieves a rated ultimate breaking capacity of 50 kA at 415 V AC (performance level N).

Technical specifications:

• Commercial reference: C40N3
• Manufacturer: Schneider Electric
• EAN:
• Series / range: ComPacT NSX new generation
• Product type: Basic frame, without protection unit
• Number of poles: 3P
• Rated current [In]: 400 A at 40°C
• Rated voltage [Ue]: 690 V AC 50/60 Hz per IEC 60947-2
• Rated insulation voltage [Ui]: 800 V AC per IEC 60947-2
• Rated impulse withstand voltage [Uimp]: 8 kV per IEC 60947-2
• Network type: AC, 50/60 Hz
• Usage category: Category A
• Rated ultimate breaking capacity [Icu]: 85 kA at 220/240 V AC - 50 kA at 380/415 V AC - 42 kA at 440 V AC - 30 kA at 500 V AC - 22 kA at 525 V AC - 10 kA at 660/690 V AC (per IEC 60947-2)
• Performance level: N, 50 kA at 415 V AC
• Suitable for isolation: Yes, per EN/IEC 60947-2
• Control type: Handle
• Mounting: Fixed, rear plate
• Connection: Front upper and lower, 45 mm
• Mechanical endurance: 15,000 cycles per IEC 60947-2
• IP protection: IP40 per IEC 60529
• IK protection: IK07 per IEC 62262
• Pollution degree: 3 per IEC 60664-1
• Operating temperature: -25...70°C
• Storage temperature: -50...85°C
• Dimensions (W x H x D): 140 x 255 x 110 mm
• Weight: 4.424 kg
• Standards: EN/IEC 60947-2, UL 60947-4-1

Features and benefits:

• Breaking capacity of 50 kA at 415 V AC meets the demands of heavy industrial distribution networks
• Frame-only design allows the protection unit to be specified separately for application-specific tripping characteristics
• Wide rated voltage range up to 690 V AC covers diverse network configurations
• Approved for use as an isolating device per EN/IEC 60947-2, supporting safe maintenance procedures
• 15,000-cycle mechanical endurance rating ensures reliable long-term operation
• Halogen-free plastic parts and PVC-free construction support environmental compliance requirements

Applications:

• Main incoming protection in medium and large industrial distribution boards
• Power distribution panels in manufacturing and process facilities
• Commercial building main switchboards requiring high breaking capacity
• Industrial control panels where the trip unit is sourced and specified independently

Compliant with EN/IEC 60947-2 and UL 60947-4-1. Part of the Schneider Electric ComPacT NSX new generation range.

Also known as: Schneider C40N3, Schneider Electric C40N3, ComPacT NSX400N frame, NSX400N basic frame.