Product Model
OS250B22LR
Selling Points
- 1High-performance switch fuse designed for motor protection in heavy industry.
- 2Rated for up to 250 A with a 22 kA breaking capacity.
- 3Meets British Standard (BS) and Pollution Degree 3 (PD3) requirements.
- 4Suitable for AC and DC applications up to 415 V and 660 V respectively.
- 5Ensures reliable operation with minimal power loss and high thermal current.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
| Parameter | Value | Parameter | Value |
|---|---|---|---|
Pollution Degree | 3 | Product Net Width | 154 mm |
Product Net Height | 277 mm | Product Net Depth / Length | 193 mm |
Product Net Weight | 7.8 kg | Conventional Free-air Thermal Current (Ith) | Π= 40 °C 250 A |
Conventional Thermal Current (Ithe) | Fully Enclosed 250 A | Fourth Pole Type | Switched - Fusible Pole |
Fuse Size | B1-B3 | Fuse System | British Standard |
Handle Type | Handle and shaft not included | Mounting Type | Base mounting |
Number of Poles | 4 | Operating Mode | Front Operated |
Pollution Degree | 3 | Position of Line Terminals | Left In - Right Out |
Power Loss | at Rated Operating Conditions per Pole 17 W | Rated Conditional Short-Circuit Current (Inc) | (690 V) 80 kA |
Rated Current (In) | Main Circuit 250 A | Rated Impulse Withstand Voltage (Uimp) | 12 kV |
Rated Insulation Voltage (Ui) | 1000 V | Rated Operational Current AC-21A (Ie) | (500 V) 250 A (690 V) 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 Power AC-23A (Pe) | (220 ... 240 V) 75 kW (400 V) 140 kW (415 V) 145 kW (500 V) 170 kW (690 V) 250 kW | Rated Operational Voltage | Main Circuit 690 V AC |
Rated Short-time Withstand Current Low Voltage (Icw) | for 1 s 8 kiloampere rms | Standards | IEC 60947-3 |
Switches Operating Mechanism | 22 (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 | 1SCA022854R7120 |
Specifications may be subject to change without notice