ABB XRG63BS-50/5-3P three-pole British Standard switch disconnector fuse rated at 63 A and 690 V AC for 50 mm busbar systems.
£505.89
The ABB 1SEP204484R1500, also known as the XRG63BS-50/5-3P, is a compact three-pole switch disconnector fuse from the ABB SlimLine XR Gold range. Designed for low-voltage power distribution systems, it combines load switching, circuit isolation and fuse protection within a single busbar-mounted device.
Rated at 63 A and 690 V AC, this model is designed for installations with 50 mm phase spacing and 5 mm-thick busbars. It uses British Standard A3 fuse links, making it suitable for industrial and commercial systems that require dependable protection for mixed, inductive and motor loads.
The XRG63BS-50/5-3P supports both AC-22B and AC-23A utilisation categories. Its narrow 50 mm width helps maximise the number of outgoing feeders within a switchboard, while the front-facing IP41 protection and manual operating mechanism support safe, straightforward operation and maintenance.
British Standard fuse switch disconnectors provide reliable overcurrent protection while allowing an electrical circuit to be manually switched and safely isolated. The replaceable fuse links interrupt excessive fault currents, while the disconnector mechanism creates a defined isolation point for inspection and maintenance.
The ABB SlimLine XR Gold design is particularly well suited to densely populated switchboards. Its slim form factor and direct busbar connection help reduce installation space, cabling requirements and assembly time while maintaining dependable electrical performance.
| Phase | Three Phase |
|---|---|
| Manufacturer | ABB |
| Series | SlimLine XR Gold |
| Product ID | 1SEP204484R1500 |
| Model | XRG63BS-50/5-3P |
| Product type | Switch disconnector fuse |
| Rated current | 63 A |
| Rated operational current, AC-22B | 63 A at 500 V and 690 V AC |
| Rated operational current, AC-23A | 63 A at 500 V and 690 V AC |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage | 1,000 V |
| Rated impulse withstand voltage | 8 kV |
| Number of poles | 3 |
| Fuse system | British Standard |
| Fuse size | A3 |
| Phase spacing | 50 mm |
| Compatible busbar thickness | 5 mm |
| Operating mode | Manual |
| Terminal type | Bolt |
| Electronic fuse monitoring | No |
| Power loss at rated load | 33 W |
| Front protection rating | IP41 |
| Product width | 590 mm |
| Product height | 50 mm |
| Product depth | 335 mm |
| Net weight | 3.7 kg |
| EAN | 3800161652325 |
| Country of origin | Bulgaria |
| Standard | IEC 60947-3 |
It is used to switch, isolate and protect three-phase low-voltage circuits in industrial and commercial power distribution systems.
The switch disconnector fuse has a rated current of 63 A.
The unit is designed for British Standard A3 fuse links.
It is designed for busbars with 50 mm phase spacing and a thickness of 5 mm.
Yes. It is rated for the AC-23A utilisation category, which covers frequent switching of motor loads and other highly inductive loads.
No. The ABB 1SEP204484R1500 is the manually operated version without integrated electronic fuse monitoring.
ABB SlimLine XR Gold switch disconnector fuses are specified by panel builders, electrical contractors and industrial engineers for compact installation, dependable isolation and reliable fuse protection in low-voltage distribution systems.
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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...