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1SCA022778R9860 ABB 250 A 3-Pole Fuse Switch
ABB OS250B12P is a 250 A 3-pole front-operated fuse switch with an operating mechanism between the poles, British Standard B1–B3 fuse compatibility, and an included handle, adjustable shaft and terminal bolt kit.
£404.53
Why Choose the ABB OS250B12P Fuse Switch?
The ABB OS250B12P is a robust 250 A 3-pole fuse switch designed for dependable switching, isolation and fuse-based protection in industrial low-voltage electrical systems. Part of the ABB OS fuse switch series, it is suitable for power distribution, machinery and switchboard applications requiring reliable manual circuit isolation.
This exact OS250B12P configuration uses British Standard B1–B3 fuse links and features its operating mechanism between the poles. The three-pole construction is designed for three-phase circuits, while the front-operated arrangement provides convenient operation when installed within an electrical enclosure or switchboard.
The OS250B12P is supplied with a terminal bolt kit, black ON-OFF plastic handle and adjustable shaft as standard. The handle provides IP65 protection, can be padlocked in the OFF position and incorporates door interlocking in the ON position, providing a practical operating solution for professional industrial installations.
Key Advantages
- 250 A rated current for demanding industrial low-voltage applications.
- 3-pole configuration suitable for three-phase circuits.
- Uses British Standard B1–B3 fuse links.
- Operating mechanism between the poles for this exact configuration.
- Supplied with handle, adjustable shaft and terminal bolt kit.
- Combines switching, isolation and fuse protection in one assembly.
Key Features
- ABB OS fuse switch series.
- OS250 product platform.
- 250 A rated current.
- 3-pole fuse switch configuration.
- British Standard B1–B3 fuse compatibility.
- Mechanism between the poles.
- Front-operated construction.
- Black ON-OFF plastic handle supplied as standard.
- Handle is IP65 protected and padlockable in the OFF position.
- Adjustable operating shaft and terminal bolt kit included.
Reliable Switching and Fuse Protection
Fuse switches combine manual circuit switching and isolation with fuse-based overcurrent and short-circuit protection. Correctly selected fuse links provide protection against electrical fault conditions while the switch mechanism enables downstream equipment to be manually isolated for operation, servicing or maintenance.
The ABB OS250B12P provides this functionality in a 250 A three-pole configuration designed for British Standard B1–B3 fuse links. Its between-poles mechanism, front-operated construction and included handle and adjustable shaft make it a practical solution for industrial switchboards, distribution systems and machinery installations.
Typical Applications
- Industrial low-voltage power distribution systems.
- Three-phase feeder and distribution circuits.
- Electrical switchboards and distribution panels.
- Machinery isolation and fuse protection.
- Industrial control cabinets and electrical enclosures.
- OEM and panel-building applications.
Technical Specifications
| Series | OS Fuse Switches |
|---|---|
| ABB order code | 1SCA022778R9860 |
| Product type | Fuse switch |
| Product platform | OS250 |
| Rated current | 250 A |
| Number of poles | 3 |
| Fuse system | British Standard |
| Fuse sizes | B1–B3 |
| Operating mechanism | Between the poles |
| Operation | Front operated |
| Handle | Black ON-OFF plastic handle, included |
| Handle protection | IP65 |
| Handle locking | Padlockable in OFF position |
| Door interlock | In ON position |
| Shaft | Adjustable, included |
| Terminal bolt kit | Included |
| ABB product group | 311021-OS Fuse Switches |
Frequently Asked Questions
What is the ABB OS250B12P?
The OS250B12P is a 250 A 3-pole fuse switch from ABB's OS range, designed for switching, isolation and fuse-based protection in industrial low-voltage electrical systems.
What is the rated current of the ABB OS250B12P?
The ABB OS250B12P has a rated current of 250 A.
How many poles does the OS250B12P have?
The OS250B12P has a 3-pole configuration, making it suitable for three-phase electrical circuits.
What fuse sizes does the ABB OS250B12P use?
The OS250B12P is designed for British Standard B1–B3 fuse links.
Where is the operating mechanism positioned on the OS250B12P?
The operating mechanism on the OS250B12P is positioned between the poles.
Does the ABB OS250B12P include a handle and shaft?
Yes. The OS250B12P is supplied with a black ON-OFF plastic handle, adjustable operating shaft and terminal bolt kit as standard.
What is the ABB order code for the OS250B12P?
The ABB order code for this exact fuse switch is 1SCA022778R9860.
Trusted by Industrial Electrical Professionals Worldwide
ABB OS fuse switches are designed for professional low-voltage installations requiring dependable switching, isolation and fuse protection across industrial power distribution, machinery and electrical control systems.
