Product: Eaton Moeller series Power Defense molded case circuit-breaker
Description: Eaton Moeller series Power Defense – Molded Case Circuit Breaker. Circuit-breaker LZM, 4 p, 250A, N2-4-A250-I
📋 Detailed Specifications
| Parameter | Value |
|---|---|
| Model Code | LZMN2-4-A250-I |
| Catalog Number | 174439 |
| EAN / GTIN-13 | 4015081709014 |
| Length | 149.0 mm |
| Height | 184.0 mm |
| Width | 140.0 mm |
| Weight | 3.0 kg |
| Amperage Rating | 250 A |
| Voltage Rating (AC) | 690 V – 690 V |
| Voltage Rating (DC) | 750 VDC |
| Rated Insulation Voltage (Ui) | 1000 V AC |
| Rated Operational Current (In) | 250 A |
| Number of Poles | Four-pole |
| Pollution Degree | 3 |
| Overvoltage Category | III |
| Degree of Protection | In the area of the HMI devices: IP20 (basic protection type) | IP20 |
| Release System | Thermomagnetic release |
| Utilization Category | A (IEC/EN 60947-2) |
| Overload Setting (Ir) — min | 200 A |
| Overload Setting (Ir) — max | 250 A |
| Instantaneous Setting (Ii) — min | 1500 A |
| Instantaneous Setting (Ii) — max | 2500 A |
| Short-circuit Release — min | 1500 A |
| Short-circuit Release — max | 2500 A |
| Short-time Withstand 0.3s | 1.9 kA |
| Short-time Withstand 1s | 1.9 kA |
| Ics @ 230 V | 85 kA |
| Ics @ 400/415 V | 50 kA |
| Ics @ 440 V | 35 kA |
| Ics @ 525 V | 25 kA |
| Icm @ 400/415 V | 105 kA |
| Icm @ 440 V | 74 kA |
| Icm @ 525 V | 53 kA |
| Icm @ 690 V | 40 kA |
| Uimp (main) | 8000 V |
| Uimp (auxiliary) | 6000 V |
| Mechanical Lifespan | 20000 operations |
| Electrical Lifespan | 3000 operations at 750 V DC-3 | 5000 operations at 690 V AC-3 | 10000 operations at 400 V AC-1 | 7500 operations at 690 V AC-1 | 7500 operations at 750 V DC-1 | 3000 operations at 500 V DC-3 | 10000 operations at 415 V AC-1 | 6500 operations at 400 V AC-3 | 6500 operations at 415 V AC-3 | 7500 operations at 500 V DC-1 |
| Standard Terminals | Screw terminal |
| Connection Type | Screw connection |
| Frame Type | LZM2 |
| Handle Type | Rocker lever |
| Mounting Method | DIN rail (top hat rail) mounting optional | Built-in device fixed built-in technique | Fixed |
| Application | Use in unearthed supply systems at 690 V |
| Functions | System and cable protection |
| Special Features | Maximum back-up fuse, if the expected short-circuit currents at the installation location exceed the switching capacity of the circuit breaker (Rated short-circuit breaking capacity Icn) | Rated current = rated uninterrupted current: 250 A | Set value in neutral conductor is synchronous with set value Ir of main pole. |
| Compliances | RoHS conform |
| Certifications | VDE 0660 | IEC/EN 60947 | IEC |
📄 Specifications are sourced from official manufacturer datasheets and are provided for reference only.
For the latest official information and pricing, please contact us for an authoritative quotation.
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