OS250B04N1
Product ID:74755
Updated: 2026/7/14
Key Features
- 1Deliver exceptional reliability in demanding 250A applications.
- 2Optimize motor protection with rapid fault clearance.
- 3Simplify installation using a modular, adjustable design.
- 4Enhance safety with interlocking fuse covers.
- 5Select from various ampere ratings and voltage configurations.
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Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Product Net Width | 154 mm | Product Net Height | 262 mm |
| Product Net Depth / Length | 193 mm | Product Net Weight | 4.7 kg |
| Fuse Size | B1-B3 | Fuse System | British Standard |
| Mounting Type | Base mounting | Number of Poles | 4 |
| Operating Mode | Front Operated | Power Loss | at Rated Operating Conditions per Pole 13 W |
| Rated Conditional Short-Circuit Current (Inc) | (690 V AC) 80 kA | Rated Current (In) | Main Circuit 250 A |
| Rated Impulse Withstand Voltage (Uimp) | Main Circuit 12 kV | Rated Operational Current AC-21A (Ie) | (380 ... 415 V) 250 A (500 V AC) 250 A (690 V AC) 250 A |
| Rated Operational Current AC-22A (Ie) | (380 ... 415 V) 250 A (500 V) 250 A (690 V) 250 A | Rated Operational Current AC-23A (Ie) | (380 ... 415 V) 250 A (500 V) 250 A (690 V) 250 A |
| Rated Operational Voltage | Main Circuit 690 V AC | Rated Short-time Withstand Current Low Voltage (Icw) | for 1 s 8 kA |
| Standards | IEC 60947-3 | Terminal Type | Lug terminals |
| Tightening Torque | 30 ⦠44 N·m | Tightening Torque | 30 ⦠44 N·m |
| Object Classification Code | Q | ETIM 8 | EC001040 - Fuse switch disconnector |
| ETIM 9 | EC001040 - Fuse switch disconnector | UNSPSC | 39122233 |
| IDEA Granular Category Code (IGCC) | 5291 >> Fuse switch disconnector | eClass | V11.1 : 27371401 |
| WEEE Category | 5. Small Equipment (No External Dimension More Than 50 cm) | Manufacturer ID | 1SCA022750R7040 |
Specifications may be subject to change without notice
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