ABB XRG250BS-50/5-4P 250 A four-pole switch disconnector fuse for 50 mm busbar systems with 5 mm busbar thickness, British Standard B2 fuse compatibility and manual operation.
£1,125.26
The ABB 1SEP204487R1700 is a heavy-duty 250 A, 4-pole switch disconnector fuse designed for safe isolation and fuse protection within industrial low-voltage power distribution systems. Identified as the XRG250BS-50/5-4P, this manually operated unit is engineered for direct mounting on busbar systems with a 50 mm phase distance and 5 mm busbar thickness.
Designed for use with British Standard B2 fuses, the ABB XRG250BS-50/5-4P combines circuit isolation and fuse protection in one robust assembly. Its four-pole configuration allows simultaneous switching of three phases and the neutral conductor, making it suitable for commercial and industrial distribution systems where complete circuit isolation is required.
The unit is rated at 250 A AC-22B at 500 V AC and has a rated insulation voltage of 1,000 V. With bolt-connected main terminals, front-side manual operation and an IP41 front protection rating, it provides dependable performance in switchboards, distribution panels and power-control assemblies.
Switch disconnector fuses provide both manual circuit isolation and protection against overcurrent or short-circuit conditions when fitted with correctly selected fuse links. This combined functionality helps simplify switchboard design while providing maintenance personnel with a clear and dependable means of disconnecting electrical circuits.
The ABB XRG250BS-50/5-4P is designed for high-current busbar distribution systems where robust construction, reliable operation and complete four-pole isolation are required. Its British Standard fuse compatibility makes it particularly suitable for UK industrial and commercial electrical installations.
| Phase | Three Phase |
|---|---|
| Manufacturer | ABB |
| Series | XRG |
| Model | XRG250BS-50/5-4P |
| Order number | 1SEP204487R1700 |
| EAN | 3800161651571 |
| Product type | Switch disconnector fuse |
| Rated operational current | 250 A |
| Rated operational voltage | 500 V AC |
| Rated insulation voltage | 1,000 V |
| Rated impulse withstand voltage | 8 kV |
| Utilisation category | AC-22B |
| Number of poles | 4 |
| Fuse system | British Standard |
| Fuse size | B2 |
| Operating mode | Manual |
| Terminal type | Bolt connection |
| Busbar phase distance | 50 mm |
| Busbar thickness | 5 mm |
| Protection rating | IP41 from the front |
| Power loss at rated load | 70 W |
| Standard | IEC 60947-3 |
| Dimensions (W × H × D) | 600 × 150 × 335 mm |
| Net weight | Approx. 8.57 kg |
It is used to provide manual electrical isolation and fuse protection for high-current circuits in industrial and commercial low-voltage distribution systems.
The ABB XRG250BS-50/5-4P has a rated operational current of 250 A.
It is designed for British Standard B2 fuse links. Fuse links should be selected according to the circuit design and protection requirements.
This model has four poles, allowing the three phase conductors and neutral conductor to be switched together.
It is designed for busbar systems with a 50 mm phase distance and 5 mm busbar thickness.
ABB switch disconnector fuses are trusted by panel builders, electrical contractors and industrial engineers for dependable circuit isolation, robust fuse protection and reliable operation in demanding power-distribution environments.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...