ABB OS63GB12 63 A three-pole front-operated switch fuse for British Standard A2/A3 fuse links, designed for industrial circuit protection and electrical isolation.
£137.47
The ABB OS63GB12 is a high-performance 63 A three-pole switch fuse designed for the safe switching, isolation and protection of low-voltage electrical circuits. As part of ABB's proven OS switch fuse range, it combines a robust switching mechanism with integrated fuse protection, making it ideal for industrial switchboards, motor control centres and commercial power distribution systems.
Designed for use with British Standard A2/A3 fuse links, the OS63GB12 provides dependable short-circuit protection while allowing rapid fuse replacement when required. The front-operated mechanism offers convenient operation from the front of the enclosure, while the compact design simplifies installation in new and retrofit applications.
The switch fuse is supplied without an operating handle or shaft, allowing these accessories to be selected separately to suit the installation. With a rated operational current of 63 A and operation up to 690 V AC, the OS63GB12 delivers reliable isolation and circuit protection for demanding industrial environments.
The ABB OS63GB12 combines manual isolation with fuse protection in a single compact unit, providing safe switching together with effective protection against overloads and short circuits. Its front-operated mechanism and robust construction make it well suited to industrial power distribution systems where dependable operation and ease of maintenance are essential.
Designed for use with British Standard A2/A3 fuse links, the switch fuse offers excellent protection for feeders, motors and distribution circuits. Optional ABB operating handles and shafts can be selected to match the enclosure configuration while maintaining IP65 protection when installed with compatible accessories.
| Current | 63 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | OS Switch Fuses |
| Model | OS63GB12 |
| Product ID | 1SCA115324R1001 |
| Product type | Switch fuse |
| Rated operational current (Ie) | 63 A |
| Number of poles | 3 |
| Fuse type | British Standard A2/A3 |
| Rated operational voltage | Up to 690 V AC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Rated operational power (AC-23A) | 55 kW at 690 V |
| Rated conditional short-circuit current | 80 kA |
| Rated short-time withstand current (Icw) | 2.5 kA (1 s) |
| Terminal type | Screw terminals |
| Mounting type | Busbar mounting |
| Operating mode | Front operated |
| Dimensions (W × H × D) | 112 × 125 × 109 mm |
| Net weight | Approx. 1.18 kg |
| Standards | IEC 60947-3 |
| HS Code | 85365080 |
| Country of Manufacture | Finland |
The ABB OS63GB12 is a switch fuse used to safely isolate and protect three-phase electrical circuits using British Standard A2/A3 fuse links.
The OS63GB12 has a rated operational current of 63 A.
The switch fuse is designed for British Standard A2/A3 fuse links.
No. The operating handle and shaft are supplied separately so they can be selected to suit the enclosure and installation requirements.
It is commonly installed in industrial switchboards, motor control centres, commercial distribution panels and machinery requiring reliable fused isolation.
ABB OS switch fuses are trusted worldwide by electrical engineers, panel builders and OEMs for dependable circuit protection, reliable switching performance and long-term durability in demanding low-voltage applications.
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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...