The Schneider Electric C40N42D250 is a high-quality circuit breaker designed to provide robust protection for a wide range of electrical applications. With a current rating of 250A, four poles, and a 50kA breaking capacity at 415VAC, this circuit breaker is engineered to ensure the safe and efficient operation of your electrical circuits.
Key Features:
High-Performance: This circuit breaker is part of the Compact NSX400N series, known for its high performance and reliable protection. It's designed to handle heavy electrical loads and deliver exceptional performance in demanding environments.
MicroLogic 2.3 Trip Unit: The MicroLogic 2.3 trip unit offers precise and adjustable protection settings, enhancing the safety and reliability of your electrical installation.
Four Poles: The inclusion of four poles adds an extra layer of safety and versatility to your electrical setup.
Whether you need dependable circuit protection in an industrial, commercial, or residential setting, the Schneider Electric C40N42D250 is a trusted choice.
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Specifications |
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Main |
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| Range | ComPacT new generation |
| Product name | ComPacT NSX new generation |
| device short name | NSX400N |
| 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 | 250 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 |
| [Icu] rated ultimate short-circuit breaking capacity | 85 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 |
| 50 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 | |
| 42 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 | |
| 30 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 | |
| 22 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 | |
| 10 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2 | |
| 50 kA at 480 V AC 50/60 Hz conforming to UL 508 | |
| Performance level | N 50 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 | |
| [Ui] rated insulation voltage | 800 V AC 50/60 Hz |
| [Uimp] rated impulse withstand voltage | 8 kV |
| [Ics] rated service short-circuit breaking capacity | 85 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 |
| 50 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 | |
| 42 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 | |
| 30 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 | |
| 11 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 | |
| 10 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 | 7.5 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 | 250 A at 40 °C |
| Long-time pick-up adjustment type Ir (thermal protection) | Adjustable 9 settings |
| [Ir] long-time protection pick-up adjustment range | 70...250 A |
| Long-time protection delay adjustment type tr | Fixed |
| [tr] long-time protection 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 settings | 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 | 3000 A |
| earth-leakage protection | Without |
| Zone selective interlocking ZSI | Without |
| Number of slots for electrical auxiliaries | 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 | |
| standards | EN/IEC 60947 |
| product certifications | CCC |
| EAC | |
| Marine | |
| Overvoltage category | Class II |
| Electrical shock protection class | Class II |
| 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 |