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Schneider Electric 31770 Compact NS250N Circuit Breaker, 250 A, 3-Pole 690 V AC
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$380.00 USD
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$380.00 USD
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The Schneider Electric Compact NS250N (catalogue number 31770) is a 3-pole moulded-case circuit breaker built for distribution applications in AC or DC networks up to 690 V AC. Equipped with an electronic STR22SE trip unit, it offers adjustable long-time and short-time protection for currents up to 250 A and maintains high breaking performance in accordance with IEC 60947-2.
- Rated current: 250 A at 40 °C
- Electronic trip unit: STR22SE with adjustable long/short-time settings
- Breaking capacity: up to 36 kA Icu at 380/415 V AC
- Rated operational voltage: 690 V AC 50/60 Hz; 750 V DC
- Fixed mounting; front connections; positive contact indication
- Mechanical life: 20 000 cycles; electrical life: 10 000 cycles
| Product ID | 31770 |
| Extended Product Type | Circuit breaker |
| Brand | Schneider Electric |
| Series / Range | Compact NS250N |
| Poles | 3 P |
| Rated Current (In) | 250 A |
| Rated Operational Voltage (Ue) | 690 V AC 50/60 Hz; 750 V DC |
| Rated Insulation Voltage (Ui) | 750 V AC |
| Rated Impulse Withstand (Uimp) | 8 kV |
| Breaking Capacity (Icu) 380/415 V AC | 36 kA |
| Trip Unit | STR22SE (electronic) |
| Utilisation Category | A |
| Mounting Mode | Fixed (backplate) |
| Connection | Front (up & down) |
| Mechanical Durability | 20 000 cycles |
| Electrical Durability | 10 000 cycles @ 440 V AC |
| Protection Rating | IP40 |
| Operating Temperature | -25…70 °C |
| Dimensions (H × W × D) | 161 mm × 105 mm × 86 mm |
| Standards | IEC 60947-2 |
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