OS400B21LR
Product ID:77327
Updated: 2026/4/3
Key Features
- 1Ensure high protection and reliability with rapid fault clearance. 2、Simplify installation and customization via modular design. 3、Adjust shaft for various depths to save time and space. 4、Enhance safety with interlocking fuse covers during operation. 5、Install efficiently in smaller enclosures using a compact structure.
Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Pollution Degree | 3 | Product Net Width | 344 mm |
| Product Net Height | 150 mm | Product Net Depth / Length | 255 mm |
| Product Net Weight | 9.6 kg | Conventional Free-air Thermal Current (Ith) | Π= 40 °C 400 A |
| Conventional Thermal Current (Ithe) | Fully Enclosed 630 A | Fuse Size | B1-B4 |
| Fuse System | British Standard | Handle Type | Handle and shaft not included |
| Mounting Type | Base mounting | Number of Poles | 3 |
| Operating Mode | Front Operated | Pollution Degree | 3 |
| Position of Line Terminals | Left In - Right Out | Power Loss | at Rated Operating Conditions per Pole 40 W |
| Rated Conditional Short-Circuit Current (Inc) | (690 V) 80 kA | Rated Current (In) | Main Circuit 400 A |
| Rated Impulse Withstand Voltage (Uimp) | 12 kV | Rated Insulation Voltage (Ui) | 1000 V |
| Rated Operational Current AC-21A (Ie) | (500 V) 400 A (690 V) 400 A | Rated Operational Current AC-22A (Ie) | (380 ... 415 V) 400 A (500 V) 400 A (690 V) 400 A |
| Rated Operational Current AC-23A (Ie) | (380 ... 415 V) 400 A (500 V) 400 A (690 V) 400 A | Rated Operational Power AC-23A (Pe) | (220 ... 240 V) 132 kW (400 V) 220 kW (415 V) 230 kW (500 V) 280 kW (690 V) 400 kW |
| Rated Operational Voltage | Main Circuit 690 V AC | Rated Short-time Withstand Current Low Voltage (Icw) | for 1 s 14 kiloampere rms |
| Standards | IEC 60947-3 | Switches Operating Mechanism | 21 (Between the Poles) |
| Terminal Type | Lug terminals | Terminal Width | 25 mm |
| 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 | 1SCA022855R1310 |
Specifications may be subject to change without notice