Schneider C403400S Switch Disconnector, ComPact NSX400NA, 3P 400A

The Schneider Electric C403400S is a ComPacT NSX400NA switch disconnector rated at 400 A thermal current, designed for distribution applications in AC networks up to 690 V. This 3-pole, fixed-mounting device provides reliable load switching and isolation conforming to EN/IEC 60947-3, with utilisation categories AC-22A and AC-23A.

Technical specifications:

• Commercial reference: C403400S
• Manufacturer: Schneider Electric
• Series / range: ComPacT NSX
• Product type: Switch disconnector
• Application: Distribution
• Number of poles: 3P
• Conventional free air thermal current [Ith]: 400 A at 50°C
• Rated operational current [Ie]: 400 A AC 50/60 Hz, 220-690 V (AC-22A and AC-23A)
• Rated operational voltage [Ue]: 690 V AC 50/60 Hz
• Rated insulation voltage [Ui]: 800 V AC 50/60 Hz
• Rated impulse withstand voltage [Uimp]: 8 kV
• Rated short-time withstand current [Icw]: 5 kA for 1 s, 5 kA for 3 s, 1.93 kA for 20 s
• Rated short-circuit making capacity [Icm]: 330 kA (with upstream protection), 7.1 kA (switch-disconnector alone)
• Network type: AC
• Mounting mode: Fixed
• Mounting support: Backplate
• Control type: Toggle
• Connection: Front (upside and downside), pitch 45 mm
• Dimensions (W x H x D): 140 x 255 x 110 mm
• Weight: 5.2 kg
• IP protection rating: IP40 (IEC 60529)
• IK protection rating: IK07 (IEC 62262)
• Electrical shock protection: Class II
• Pollution degree: 3 (IEC 60664-1)
• Operating temperature: -25 to 70°C
• Storage temperature: -50 to 85°C
• Mechanical durability: 15000 cycles
• Standards: EN/IEC 60947-1, EN/IEC 60947-3
• Warranty: 18 months

Features and benefits:

• Suitable for isolation conforming to EN/IEC 60947-3, ensuring safe maintenance and circuit de-energisation
• High short-circuit making capacity of 330 kA with upstream protection circuit breaker
• Contact position indicator provided for clear open/closed status visibility
• Wide operating temperature range of -25 to 70°C suitable for demanding environments
• Pollution degree 3 rating and IP40 protection for use in industrial enclosures
• AC-22A and AC-23A utilisation categories covering both non-inductive and motor load switching

Applications:

• Main or sub-main disconnection in industrial and commercial distribution boards
• Load switching and isolation in power distribution panels up to 690 V AC
• Motor feeder disconnection in manufacturing and process plant installations
• Switchgear assemblies requiring a fixed-mount 400 A isolating switch

Compliant with EN/IEC 60947-1 and EN/IEC 60947-3. Part of the Schneider Electric ComPacT NSX range.

Also known as: Schneider C403400S, Schneider Electric C403400S, NSX400NA switch disconnector, ComPacT NSX 400 A isolator.