OS250B03N3
Product ID:75516
Updated: 2026/4/3
Key Features
- 1Integrate a detachable neutral link for enhanced safety and installation flexibility. 2、Utilize a robust 4-pole design ideal for heavy industrial applications. 3、Meet stringent British Standard fuse specifications for guaranteed reliability. 4、Handle high thermal currents up to 250A in enclosed conditions. 5、Ensure compliance with EU RoHS Directive 2011/65/EU and amendments.
Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Pollution Degree | 3 | Product Net Width | 193 mm |
| Product Net Height | 208 mm | Product Net Depth / Length | 154 mm |
| Product Net Weight | 4.2 kg | Conventional Free-air Thermal Current (Ith) | Π= 40 °C 250 A |
| Conventional Thermal Current (Ithe) | Fully Enclosed 250 A | Fourth Pole Type | Detachable Neutral Link Integrated Into the Mechanism |
| Fuse Size | B1-B3 | 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 | Top In - Bottom Out, Bottom In - Top Out |
| Power Loss | at Rated Operating Conditions per Pole 13 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 | Special Functions | Detachable Neutral |
| Standards | IEC 60947-3 | Switches Operating Mechanism | 03 (Left Side) |
| 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 | 1SCA022750R7980 |
Specifications may be subject to change without notice