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1SCA111664R1001 ABB 1250 A 4-Pole BS Switch Fuse
ABB OS1250B22N2 is a 1250 A 4-pole British Standard switch fuse with a D1 mechanical fuse size, mechanism positioned between the poles and a right-side switched fourth pole with solid link.
£3,017.96
Why Choose the ABB OS1250B22N2 1250 A 4-Pole Switch Fuse?
The ABB OS1250B22N2 is a heavy-duty 1250 A 4-pole switch fuse designed for high-current switching, isolation and fuse-based protection in low-voltage power distribution systems. Part of the ABB OS1250 fuse switch range, it combines dependable manual isolation with British Standard fuse protection for demanding industrial and commercial installations.
The OS1250B22N2 uses the British Standard fuse system with D1 mechanical fuse size and features a front-operated mechanism positioned between the poles. Its base-mounted construction and heavy-duty 50 mm lug terminals make it suitable for integration into substantial switchboards and power-distribution assemblies.
This 4-pole configuration incorporates a switched fourth pole with a solid link, positioned on the right-hand side of the assembly. The OS1250B22N2 is supplied without a handle and operating shaft, allowing suitable ABB operating accessories to be selected separately for the enclosure and installation arrangement.
Key Advantages
- Heavy-duty 1250 A 4-pole switch fuse for high-current distribution systems.
- Uses the British Standard fuse system with D1 mechanical fuse size.
- Operating mechanism positioned between the poles for an integrated installation arrangement.
- Switched fourth pole with solid link for four-pole circuit isolation.
- Robust 50 mm lug terminals for high-current connections.
- Front-operated and base-mounted design for switchboard integration.
- Supplied without handle and shaft for flexible operating-accessory selection.
Key Features
- ABB OS1250 fuse switch.
- 1250 A switching current.
- 4-pole configuration.
- British Standard fuse system.
- D1 mechanical fuse size.
- Front-operated switching arrangement.
- Operating mechanism 22, positioned between the poles.
- Fourth pole positioned on the right side.
- Fourth pole switched with a solid link.
- Base-mounted construction.
- 50 mm wide lug terminals.
- Handle and operating shaft not included.
High-Current Four-Pole Switching and Fuse Protection
The ABB OS1250B22N2 combines high-current manual switching and isolation with the protection provided by appropriately selected British Standard D1 fuse links. Its 1250 A, 4-pole configuration is intended for substantial low-voltage distribution circuits where dependable disconnection and fuse-based protection are required.
The operating mechanism is positioned between the poles, while the fourth pole is located on the right side and switched using a solid link. Together with its base-mounted construction and 50 mm lug terminals, this arrangement makes the OS1250B22N2 suitable for integration into high-current industrial switchboards, with the appropriate handle and shaft selected separately for the installation.
Typical Applications
- High-current industrial power distribution systems.
- Main low-voltage switchboards.
- Four-pole feeder switching and isolation.
- Industrial plant and machinery power supplies.
- Power distribution and control assemblies.
- Installations requiring high-current British Standard fuse protection.
Technical Specifications
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| Mounting Type | Base / panel | |
|---|---|---|
| Series | OS1250 | |
| ABB order code | 1SCA111664R1001 | |
| Product type | Switch fuse / fuse switch disconnector | |
| ABB product group | 311021-OS Fuse Switches | |
| Rated current | 1250 A | |
| Number of poles | 4 | |
| Fuse system | British Standard | |
| Mechanical fuse size | D1 | |
| Operation | Front operated | |
| Operating mechanism | 22, between the poles | |
| Fourth-pole position | Right side | |
| Fourth-pole type | Switched with solid link | |
| Mounting type | Base mounting | |
| Terminal type | Lug terminals | |
| Terminal width | 50 mm | |
| Handle | Not included | |
| Operating shaft | Not included | |
| Pollution degree | 3 | |
| Standard | IEC 60947-3 | |
| Country of origin | Finland |
Frequently Asked Questions
What is the ABB OS1250B22N2 used for?
The ABB OS1250B22N2 is a 1250 A 4-pole switch fuse designed for high-current switching, isolation and fuse-based protection in low-voltage electrical distribution systems.
What fuse system does the ABB OS1250B22N2 use?
The OS1250B22N2 uses the British Standard fuse system and has a D1 mechanical fuse size.
Where is the operating mechanism positioned on the ABB OS1250B22N2?
The OS1250B22N2 uses operating mechanism 22, which is positioned between the poles.
What is the fourth-pole arrangement on the ABB OS1250B22N2?
The OS1250B22N2 has its fourth pole on the right side, and this pole is switched using a solid link.
Does the ABB OS1250B22N2 include a handle and shaft?
No. The OS1250B22N2 is supplied without a handle and operating shaft, allowing compatible ABB operating accessories to be selected separately for the required installation.
Trusted ABB High-Current Fuse Switching Technology
ABB OS switch fuses provide dependable high-current switching and isolation with British Standard fuse protection, offering a robust solution for demanding industrial and commercial low-voltage power distribution systems.
