C40N42D400 Schneider Electric Jistič základní rám, ComPact NSX400N 4P 400A 415VAC 50kA

The Schneider Electric C40N42D400 is a 4-pole ComPact NSX400N moulded case circuit breaker rated at 400 A, designed for electrical power distribution. Equipped with the MicroLogic 2.3 electronic protection unit, it delivers LSoI protection functions with a rated ultimate breaking capacity of 50 kA at 415 V AC, making it suitable for demanding industrial and commercial installations.

Technical specifications:

• Commercial reference: C40N42D400
• Manufacturer: Schneider Electric
• EAN:
• Series / range: ComPact NSX new generation
• Product type: Circuit breaker (MCCB)
• Number of poles: 4P
• Protected poles description: 4d / 3d + N/2 / 3d
• Rated current [In]: 400 A at 40 °C
• Rated voltage [Ue]: 690 V AC 50/60 Hz
• Network type: AC, 50/60 Hz
• Performance level: N - 50 kA at 415 V AC
• Breaking capacity [Icu] at 380/415 V AC: 50 kA (IEC 60947-2)
• Breaking capacity [Icu] at 220/240 V AC: 85 kA (IEC 60947-2)
• Breaking capacity [Icu] at 660/690 V AC: 10 kA (IEC 60947-2)
• Service breaking capacity [Ics] at 380/415 V AC: 50 kA (IEC 60947-2)
• Protection unit: MicroLogic 2.3, electronic technology
• Protection functions: L (overload), So (short-time delay short-circuit), I (instantaneous short-circuit)
• 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]: 4800 A (fixed)
• Rated insulation voltage [Ui]: 800 V AC 50/60 Hz
• Rated impulse withstand voltage [Uimp]: 8 kV
• Mechanical endurance: 15,000 cycles
• Electrical endurance: 12,000 cycles at 440 V In/2
• Mounting: Fixed, rear plate
• Handle mounting position: Horizontal and vertical
• Connection: Front upper and lower terminals, 45 mm
• IP protection rating: IP40 (IEC 60529)
• IK impact protection: IK07 (IEC 62262)
• Operating temperature: -25 to 70 °C
• Storage temperature: -50 to 85 °C
• Relative humidity: 0-95%
• Pollution degree: 3 (IEC 60664-1)
• Width x Height x Depth: 185 x 255 x 110 mm
• Weight: 7.9 kg
• Standard: EN/IEC 60947-2
• Auxiliary slots: 6

Features and benefits:

• MicroLogic 2.3 electronic protection unit provides precise LSoI protection with 9 adjustable settings for both long-time and short-time pick-up
• High breaking capacity of 50 kA at 415 V AC ensures reliable fault clearance in demanding distribution networks
• Thermal memory function active for 20 minutes before and after tripping, preventing nuisance re-closing under thermal stress
• Local LED signalling for device ready status, overload at 105% Ir (red), and pre-alarm at 90% Ir (orange)
• Suitable for isolation per EN/IEC 60947-2, supporting Category A applications
• Flexible neutral protection settings (0.5 x Ir, 1 x Ir, or unprotected) to match various network configurations

Applications:

• Main and sub-main distribution boards in industrial facilities and commercial buildings
• Protection of large electrical feeders and busbar systems up to 400 A
• Industrial power distribution panels requiring selective coordination with downstream protective devices
• Installations demanding high short-circuit breaking performance at medium voltage levels up to 690 V AC
• Switchgear assemblies where electronic adjustable protection and local fault signalling are required

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 C40N42D400, Schneider Electric C40N42D400, NSX400N 4P MCCB, ComPact NSX 400A circuit breaker.