OS125BS40N1W
Product ID:70719
Updated: 2026/7/14

Key Features
- 1Install flexibly with adjustable feet for top or side mounting.
- 2Operate safely using a double-insulated external handle.
- 3Simplify cable routing with high terminal positioning.
- 4Ensure versatile compatibility with DIN, BS, NFC, UL, and CSA fuse links.
- 5Enhance safety with lockable fuse covers in the OFF-position.
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Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Environmental Information | 1SCC311002D0201 | Product Net Width | 229 mm |
| Product Net Height | 144 mm | Product Net Depth / Length | 113 mm |
| Product Net Weight | 1.80 kg | Conventional Free-air Thermal Current (Ith) | Π= 40 °C 125 A |
| Conventional Thermal Current (Ithe) | Fully Enclosed 125 A | Fuse Size | A2, A3, A4 |
| Fuse System | British Standard | Fuse Type | BS |
| Handle Type | Not included | Number of Poles | 4P |
| Operating Mode | Side Operated | Position of Line Terminals | Top In - Bottom Out Bottom In - Top Out |
| Power Loss | at Rated Operating Conditions per Pole 5 W | Rated Operational Current AC-21A (Ie) | (380 ... 415 V) 125 A (500 V) 125 A (690 V) 125 A |
| Rated Operational Current AC-22A (Ie) | (380 ... 415 V) 125 A (500 V) 125 A (690 V) 125 A | Rated Operational Current AC-23A (Ie) | (500 V) 125 A (380 ... 415 V) 125 A |
| Rated Operational Current AC-23B (Ie) | (380 ... 415 V) 125 A (500 V) 125 A (690 V) 125 A | Rated Operational Power AC-23A (Pe) | (500 V) 55 kW (690 V) 110 kW (400 V) 55 kW (415 V) 55 kW (220 ... 240 V) 37 kW |
| Rated Operational Voltage | 690 V AC | Switches Operating Mechanism | Mechanism at the End of the Switch |
| Terminal Width | 20 mm | Object Classification Code | Q |
| ETIM 8 | EC001040 - Fuse switch disconnector | Manufacturer ID | 1SCA022552R4220 |
Specifications may be subject to change without notice
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