OS1250D04FK
Product ID:75232
Updated: 2026/7/14
Key Features
- 1Ensure rapid fault clearance and sustained protection levels.
- 2Install and maintain easily with a modular, adjustable design.
- 3Save on space and costs using a compact, lightweight unit.
- 4Extend electrical life with self-cleaning, maintenance-free contacts.
- 5Enhance personnel safety via interlocking fuse covers.
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Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Pollution Degree | 3 | Product Net Width | 539 mm |
| Product Net Height | 356 mm | Product Net Depth / Length | 294 mm |
| Product Net Weight | 36.495 kg 80.46 lb | Cable Cross-Section | 2.5 ... 25 mm² |
| Conventional Free-air Thermal Current (Ith) | Π= 40 °C 1250 A | Conventional Thermal Current (Ithe) | Fully Enclosed 1000 A |
| Fourth Pole Type | Switched - Fusible Pole | Fuse Size | NH4 |
| Fuse System | DIN | Handle Type | Direct mounted handle |
| Mounting Type | Base mounting | Number of Poles | 4 |
| Operating Mode | Front Operated | Pollution Degree | 3 |
| Position of Line Terminals | Top In - Bottom Out Bottom In - Top Out | Power Loss | at Rated Operating Conditions per Pole 75 W |
| Rated Conditional Short-Circuit Current (Inc) | (690 V) 80 kA | Rated Current (In) | Main Circuit 1250 A |
| Rated Impulse Withstand Voltage (Uimp) | 12 kV | Rated Insulation Voltage (Ui) | 1000 V |
| Rated Operational Current AC-21A (Ie) | (380 ... 415 V) 1250 A (500 V) 1250 A (690 V) 1250 A | Rated Operational Current AC-21B (Ie) | (500 V) 1250 A (690 V) 1250 A |
| Rated Operational Current AC-22A (Ie) | (380 ... 415 V) 1250 A | Rated Operational Current AC-22B (Ie) | (500 V) 1250 A (690 V) 1250 A |
| Rated Operational Current AC-23A (Ie) | (380 ... 415 V) 1000 A | Rated Operational Current AC-23B (Ie) | (500 V) 1000 A (690 V) 1000 A |
| Rated Operational Power AC-23A (Pe) | (220 ... 240 V) 315 kW (400 V) 560 kW (415 V) 560 kW (500 V) 710 kW (690 V) 1000 kW | Rated Operational Voltage | Main Circuit 690 V AC |
| Rated Short-time Withstand Current Low Voltage (Icw) | for 1 s 40 kiloampere rms | Standards | IEC 60947-3 |
| Switches Operating Mechanism | 04 (Left Side) | Terminal Type | Lug terminals |
| Terminal Width | 50 mm | Tightening Torque | 50 ... 75 N·m |
| Tightening Torque | 50 ... 75 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 | 4. Large Equipment (Any External Dimension More Than 50 cm) |
| Manufacturer ID | 1SCA113109R1001 |
Specifications may be subject to change without notice
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