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1SCA022871R0050 ABB 400 A 4-Pole Side Operated British Standard Switch Fuse
ABB OS400BS04N2K (1SCA022871R0050) is a 400 A four-pole side operated British Standard B1–B4 switch fuse with a left-side mechanism, direct handle and right-hand N2 non-fused switched neutral for industrial low-voltage power distribution.
£944.83
Why Choose the ABB OS400BS04N2K Side Operated Switch Fuse?
The ABB OS400BS04N2K, product ID 1SCA022871R0050, is a heavy-duty 400 A four-pole side operated switch fuse designed for reliable switching, electrical isolation and fuse protection in demanding industrial low-voltage power distribution systems. As part of the ABB OS Fuse Switches range, it combines high-current switching with British Standard fuse protection.
The OS400BS04N2K uses a side-operated configuration with the mechanism on the left and is supplied with a direct operating handle. Its four-pole construction incorporates an N2 non-fused switched neutral on the right-hand side, making it suitable for compatible three-phase and neutral systems where the phase conductors require fuse protection while the neutral is switched without being fused.
Rated at 400 A for AC-20 to AC-23A duties at up to 690 V AC, the OS400BS04N2K is designed for B1–B4 fuse links and provides operational power ratings of 230 kW at 400 V, 280 kW at 500 V and 400 kW at 690 V. The K-type package includes an operating shaft, direct-mounted handle and terminal bolt kit for installation.
Key Advantages
- Heavy-duty 400 A switch fuse for high-current industrial applications.
- Four-pole configuration for compatible three-phase and neutral systems.
- Side operated with the mechanism on the left.
- Supplied with a direct operating handle and shaft.
- N2 non-fused switched neutral positioned on the right-hand side.
- Designed for British Standard B1–B4 fuse links.
- Combines load switching, electrical isolation and fuse protection within one device.
- Suitable for industrial switchboards, machinery supplies and high-current feeder circuits.
Key Features
- ABB OS Fuse Switches series.
- 400 A rated operational current.
- Four-pole construction.
- Side-operated switch-fuse design.
- Operating mechanism positioned on the left side.
- Direct operating handle.
- N2 neutral configuration on the right-hand side.
- Non-fused switched neutral pole.
- British Standard B1–B4 fuse compatibility.
- Rated for AC-20 to AC-23A duties at up to 690 V AC.
- 230 kW operational power at 400 V.
- 280 kW operational power at 500 V.
- 400 kW operational power at 690 V.
- Operating shaft, direct handle and terminal bolts included.
Reliable Four-Pole Side-Operated Fuse Protection
Switch fuses combine manual load switching and electrical isolation with the overcurrent and short-circuit protection provided by correctly selected fuse links. In the OS400BS04N2K, the applicable phase conductors use British Standard fuse links while the N2 neutral pole is switched but remains unfused.
The ABB OS range includes side-operated configurations for switchboards where conventional front operation is unsuitable. The OS400BS04N2K combines a 400 A four-pole arrangement, B1–B4 fuse compatibility, a left-side operating mechanism, right-hand non-fused switched neutral and direct handle, providing a robust solution for high-current three-phase and neutral distribution systems.
Typical Applications
- Industrial low-voltage distribution boards.
- High-current electrical switchboards.
- Three-phase and neutral feeder circuits.
- Industrial machinery and equipment power supplies.
- Four-pole switching, isolation and fuse protection applications.
- Panel designs requiring left-side operation and a right-hand neutral pole.
Technical Specifications
| Series | OS Fuse Switches |
|---|---|
| Product ID | 1SCA022871R0050 |
| ABB product group | 311021-OS Fuse Switches |
| Product type | Side operated British Standard switch fuse |
| Rated operational current | 400 A |
| Number of poles | 4 |
| Fuse system | British Standard |
| Fuse size | B1–B4 |
| Rated operational voltage | up to 690 V AC |
| Operational power at 400 V | 230 kW |
| Operational power at 500 V | 280 kW |
| Operational power at 690 V | 400 kW |
| Operation | Side operated |
| Mechanism position | Left side |
| Handle arrangement | Direct handle |
| Neutral designation | N2 |
| Neutral configuration | Non-fused switched neutral |
| Neutral position | Right-hand side |
| Operating shaft | OXP12X47-TO included |
| Operating handle | OHB95D12 included |
| Terminal bolts | M10×30 included |
| Product net weight | approx. 9.5 kg |
Frequently Asked Questions
What is the ABB OS400BS04N2K used for?
The ABB OS400BS04N2K is a 400 A four-pole side operated switch fuse designed for switching, electrical isolation and fuse protection in demanding industrial low-voltage power distribution systems.
What fuse links are compatible with the ABB OS400BS04N2K?
The OS400BS04N2K is designed for British Standard B1–B4 fuse links.
What does N2 mean on the ABB OS400BS04N2K?
The N2 designation identifies the non-fused switched neutral positioned on the right-hand side of the switch fuse.
Where is the operating mechanism positioned on the OS400BS04N2K?
The OS400BS04N2K is side operated with the mechanism positioned on the left side and is supplied with a direct-mounted operating handle.
Does the ABB OS400BS04N2K include a handle and shaft?
Yes. The OS400BS04N2K includes an OXP12X47-TO operating shaft, OHB95D12 direct operating handle and M10×30 terminal bolts.
Trusted by Electrical Professionals Worldwide
ABB OS fuse switches provide dependable switching, electrical isolation and fuse protection for demanding low-voltage power distribution applications, with four-pole side-operated configurations engineered for industrial switchboards, machinery installations and high-current three-phase and neutral feeder circuits.
