OS125GBS40N2
Product ID:74957
Updated: 2026/4/3

Key Features
- 1Designed for high thermal current (Ith) and short-circuit current (Inc) ratings. 2、Side-operated mechanism ensures secure and efficient switching. 3、Meets British Standard and EU RoHS directives for environmental compliance. 4、Suitable for various voltage levels, including 500V and 690V AC. 5、Constructed with durable materials, ensuring long-lasting performance in harsh environments.
Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Pollution Degree | 3 | Product Net Width | 217 mm |
| Product Net Height | 140 mm | Product Net Depth / Length | 127 mm |
| Product Net Weight | 2.56 kg 5.64 lb | Conventional Free-air Thermal Current (Ith) | Π= 40 °C 125 A |
| Conventional Thermal Current (Ithe) | Fully Enclosed 125 A | Fourth Pole Position | Right Side |
| Fourth Pole Type | Switched - With Solid Link | Fuse Size | A2-A4 |
| Fuse System | British Standard | Handle Type | Handle and shaft not included |
| Mounting Type | Base mounting | Number of Poles | 4 |
| Operating Mode | Side Operated | Pollution Degree | 3 |
| Position of Line Terminals | Top In - Bottom Out, Bottom In - Top Out | Power Loss | at Rated Operating Conditions per Pole 4 W |
| Rated Conditional Short-Circuit Current (Inc) | (690 V) 80 kA | Rated Current (In) | Main Circuit 125 A |
| Rated Impulse Withstand Voltage (Uimp) | 8 kV | Rated Insulation Voltage (Ui) | 1000 V |
| Rated Operational Current AC-21A (Ie) | (500 V) 125 A (690 V) 125 A | Rated Operational Current AC-22A (Ie) | (500 V) 125 A (690 V) 125 A |
| Rated Operational Current AC-23A (Ie) | (500 V) 125 A (690 V) 125 A | Rated Operational Power AC-23A (Pe) | (220 ... 240 V) 37 kW (400 V) 55 kW (415 V) 55 kW (500 V) 75 kW (690 V) 110 kW |
| Rated Operational Voltage | Main Circuit 690 V AC | Rated Short-time Withstand Current Low Voltage (Icw) | for 1 s 5 kiloampere rms |
| Standards | IEC 60947-3 | Switches Operating Mechanism | 40 (Right Side) |
| Terminal Type | Lug terminals | Terminal Width | 20 mm |
| Tightening Torque | 15 ⦠22 N·m | Tightening Torque | 15 ⦠22 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 | 1SCA116761R1001 |
Specifications may be subject to change without notice
