Schneider Electric LV431670 Compact NSX250H 3-pole 250A MCCB, TMD thermal-magnetic trip. High breaking 70kA at 415V AC per IEC 60947-2. For switchboards with high fault levels. Installed as the primary motor branch-circuit protection device between the incoming feeder and the contactor.
| Series | Compact NSX250H |
| Poles | 3P |
| Rated Current | 250A |
| Trip Unit | TMD thermal-magnetic, fixed |
| Breaking Capacity Icu | 70kA at 415V AC |
| Rated Voltage | 690V AC max |
| Frame Size | 250A |
| Mounting | Plate |
| Breaking capacity | 70 kA |
| Number of poles | 3 |
| Rated current | 250 A |
| Trip unit | TMD |
| Range | ComPact |
| Product name | ComPact NSX |
| Range of product | ComPact NSX100...250 |
| Device short name | NSX250H |
| Product or component type | Circuit breaker |
| Device application | Distribution |
| Protected poles description | 3t |
| [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 at 240 V AC 50/60 Hz conforming to UL 508; 65 kA at 480 V AC 50/60 Hz conforming to UL 508; 10 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2; 100 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2; 35 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2; 50 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2; 65 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2; 70 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2; 15 kA at 600 V AC 50/60 Hz conforming to UL 508 |
| Performance level | H 70 kA 415 V AC |
| Trip unit name | TM-D |
| Trip unit technology | Thermal-magnetic |
| Trip unit protection functions | LI |
| Control type | Toggle |
| Circuit breaker mounting mode | Fixed |
| [Ui] rated insulation voltage | 800 V AC 50/60 Hz |
| [Uimp] rated impulse withstand voltage | 8 kV |
| [Ics] rated service short-circuit breaking capacity | 10 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2; 100 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2; 35 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2; 50 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2; 65 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2; 70 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 |
| Mechanical durability | 20000 cycles |
| Electrical durability | 5000 cycles at 690 V In; 10000 cycles at 690 V In/2; 10000 cycles at 440 V In; 20000 cycles at 440 V In/2 |
| Mounting support | Backplate |
| Upside connection | Front |
| Downside connection | Front |
| Connection pitch | 35 mm |
| Protection type | L : for overload protection (thermal); I : for short-circuit protection (magnetic) |
| Trip unit rating | 250 A at 40 °C |
| Long-time pick-up adjustment type Ir (thermal protection) | Adjustable |
| [Ir] long-time protection pick-up adjustment range | 0.7...1 x In |
| Long-time protection delay adjustment type tr | Fixed |
| [tr] long-time protection delay adjustment range | 120…400 s at 1.5 x In; 15 s at 6 x Ir |
| Short-time protection pick-up adjustment type Isd | Adjustable |
| [Isd] Short-time protection pick-up adjustment range | 5...10 x In |
| Short-time protection delay adjustment type tsd | Fixed |
| Earth-leakage protection | Without |
| Number of slots for electrical auxiliaries | 5 slot(s) |
| Width (W) | 105 mm |
| Height (H) | 161 mm |
| Depth (D) | 86 mm |
| Product weight | 2.4 kg |
| Standards | EN/IEC 60947 |
| Product certifications | Marine; EAC; CCC |
| 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 |
| Number of Units in Package 1 | 1 |
| Number of Units in Package 2 | 12 |
| Country of origin | PL |
| Warranty (in months) | 18 |
| EAN | 3606480014468 |
| Primary standard | IEC 60947-2; UL 489 |
| MOQ | 1 |
NSX250 frame. Full NSX accessory range supported including shunt trip MX, undervoltage MN, OF/SD/SDE auxiliaries, Vigi MH RCD.