Types of Molded Case Circuit Breakers: MCCB Guide for Engineers
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- Part number
- C40R42D400
- Model no
- NSX400R
Schneider Electric C40R42D400 ComPacT NSX400R 4P 400 A 200 kA MicroLogic 2.3 Moulded Case Circuit Breaker
ComPacT NSX400R 4P 400 A, 200 kA Icu, MicroLogic 2.3 trip unit.
Description
About the NSX400R
About the NSX400R
The C40R42D400 is a Schneider Electric ComPacT NSX400R 4-pole moulded case circuit breaker rated 400 A at 40 °C, with a 200 kA breaking capacity (Icu) at 380/415 V AC. It uses the MicroLogic 2.3 trip unit, which provides an adjustable long-time overload stage (Ir 160…400 A), a fixed-delay short-time stage and a fixed instantaneous stage at 4800 A, and is rated for isolation up to 690 V AC.
Certifications & Standards
- EN/IEC 60947-2
Selection Notes
The L-So-I MicroLogic 2.3 combines adjustable long-time overload protection (Ir 160…400 A) with a fixed-delay short-time stage and a fixed instantaneous stage at 4800 A. Pick this variant over the 5.3 E / 6.3 E versions when the board needs straightforward, non-communicating overcurrent protection without metering or zone-selective interlocking. At 200 kA Icu at 380/415 V AC, the R frame is the 200 kA 400 A ComPacT NSX option for boards needing 200 kA at 380/415 V.
Specification
Full specification
Main 21
| Range | ComPacT |
|---|---|
| Product name | ComPacT NSX |
| Device short name | NSX400R |
| Product or component type | Circuit breaker |
| Device application | Distribution |
| Poles description | 4P |
| Protected poles description | 4D, 3D + N/2, 3D |
| Neutral position | Left |
| [In] rated current | 400 A at 40 °C |
| [Ue] rated operational voltage | 690 V AC 50/60 Hz |
| Network type | AC |
| Network frequency | 50/60 Hz |
| Suitability for isolation | Yes conforming to EN/IEC 60947-2 |
| Utilisation category | Category A |
| Breaking capacity | 200 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2, 200 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2, 200 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2, 80 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2, 65 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2, 45 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2 |
| Breaking capacity code | R 200 kA 415 V AC |
| Trip unit name | MicroLogic 2.3 |
| Trip unit technology | Electronic |
| Trip unit protection functions | LSoI |
| Control type | Toggle |
| Circuit breaker mounting mode | Fixed |
Complementary 32
| [Ui] rated insulation voltage | 800 V AC 50/60 Hz |
|---|---|
| [Uimp] rated impulse withstand voltage | 8 kV |
| [Ics] rated service breaking capacity | 200 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2, 200 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2, 200 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2, 80 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2, 65 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2, 45 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2 |
| Mechanical durability | 15000 cycles |
| Electrical durability | 12000 cycles at 440 V In/2, 6000 cycles at 440 V In, 6000 cycles at 690 V In/2, 3000 cycles at 690 V In |
| Power dissipation per pole | 19.2 W |
| Mounting support | Backplate |
| Mounting position | Horizontal and vertical, Flat on the back |
| Upside connection | Front |
| Downside connection | Front |
| Connection pitch | 45 mm |
| Protection type | L : for overload protection (long time), So : for short time short-circuit protection with fixed delay, I : for instantaneous short-circuit protection |
| Trip unit rating | 400 A at 40 °C |
| Long-time pick-up adjustment type Ir (thermal protection) | Adjustable 9 settings |
| [Ir] long-time protection pick-up adjustment range | 160…400 A |
| Long-time protection delay adjustment type tr | Fixed |
| [tr] long-time delay adjustment range | 400 s at 1.5 x Ir, 16 s at 6 x Ir, 11 s at 7.2 x Ir |
| Neutral protection setting | 0.5 x Ir (3D + N/2), 1 x Ir (4D), No protection (3D) |
| Thermal memory | 20 minutes before and after tripping |
| Short-time protection pick-up adjustment type Isd | Adjustable 9 settings |
| [Isd] Short-time protection pick-up adjustment range | 1.5...10 x Ir |
| Short-time protection delay adjustment type tsd | Fixed |
| Instantaneous protection pick-up adjustment type Ii | Fixed |
| [Ii] instantaneous protection pick-up adjustment range | 4800 A |
| Earth-leakage protection | Without |
| Zone selective interlocking ZSI | Without |
| Number of slots | 6 slot(s) |
| Local signalling | Flashing LED (green) for ready to operate, LED 105 % Ir (red) for overload, LED 90 % Ir (orange) for overload |
| Width (W) | 185 mm |
| Height (H) | 255 mm |
| Depth (D) | 110 mm |
| Net weight | 7.9 kg |
Environment 10
| Standards | EN/IEC 60947-2 |
|---|---|
| Overvoltage category | III |
| Electrical shock protection class | Class II on front face |
| Pollution degree | 3 conforming to IEC 60664-1 |
| IP degree of protection | IP40 conforming to IEC 60529 |
| IK degree of protection | IK07 conforming to IEC 62262 |
| Ambient air temperature for operation | -25…70 °C |
| Ambient air temperature for storage | -50…85 °C |
| Relative humidity | 0…95 % |
| Operating altitude | 0...2000 m without derating, 2000 m...5000 m with derating |
Show all 81 specifications ↓ Show less ↑18 more values in Identification, Contractual warranty, Logistics.
Identification 7
| Part number | C40R42D400 |
|---|---|
| Type designation | NSX400R |
| Brand | Schneider Electric |
| Condition | New, factory sealed |
| Source | Schneider Electric and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
Contractual warranty 1
| Warranty (in months) | 18 |
|---|
Logistics 10
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 15.2 cm |
| Package 1 Width | 20.3 cm |
| Package 1 Length | 29.2 cm |
| Package 1 Weight | 7.593 kg |
| Shipping weight | 7.9 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 30 Oct 2026
Documents
Documents for C40R42D400
No documents are on file for this part yet.
Ask us for the datasheet
Certifications
Certifications and standards
- EN/IEC 60947-2
Quick answers
Questions about the NSX400R
What is the rated current of NSX400R?
The rated current of NSX400R is 400 A.
Which supply voltage is NSX400R rated for?
The rated operational voltage of NSX400R is 690 V AC.
What is the HS code of NSX400R for customs?
The tariff (HS) code on file for NSX400R is 85362090.
Where does NSX400R ship from, and how fast?
NSX400R ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Guides
Guides for MCCB
How to Select the Right MCCB for Your Application: Engineer Checklist
Select the right MCCB with our engineer checklist covering IEC 60947-2, sizing, breaking capacity, trip units, and derating for industry. Shop at Stoklink.
IEC 60947-2 Standards for Molded Case Circuit Breakers Explained
IEC 60947-2 defines MCCB ratings Icu, Ics, Icw, utilization categories A and B, and type tests for low-voltage circuit breakers up to 1000V. Shop...
Reviews
Customer reviews
Series
Schneider Electric Schneider ComPacT NSX
- Brand
- Schneider Electric
- Series
- Schneider ComPacT NSX
