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1SCA108998R1001 ABB 20 A 4-Pole Side Operated A1 Switch Fuse
ABB OS20FBS40A1N1 (1SCA108998R1001) is a 20 A four-pole side operated A1 switch fuse with a non-fused switched neutral on the left side for low-voltage electrical distribution applications.
£142.71
Why Choose the ABB OS20FBS40A1N1 Side Operated Switch Fuse?
The ABB OS20FBS40A1N1, product ID 1SCA108998R1001, is a compact 20 A four-pole side operated switch fuse designed for reliable switching, isolation and fuse protection in low-voltage electrical distribution systems. As part of the ABB OS Fuse Switches range, this OS Mini device provides dependable circuit isolation and fuse-based protection for industrial and commercial applications.
The OS20FBS40A1N1 is specifically designed for A1 fuse links and incorporates a non-fused switched neutral on the left side. Its four-pole arrangement makes it suitable for three-phase and neutral circuits where simultaneous switching of the neutral conductor is required. Protected tunnel terminals provide IP20 protection at the terminals for safe integration into suitable electrical enclosures.
With a rated operational current of 20 A at up to 690 V AC, the OS20FBS40A1N1 provides AC-23 operational power ratings of 7.5 kW at 415 V, 11 kW at 500 V and 15 kW at 690 V. A black ON-OFF external handle and adjustable operating shaft are supplied as standard, supporting convenient installation and operation from outside the electrical enclosure.
Key Advantages
- Compact 20 A four-pole side operated switch fuse.
- Specifically designed for A1 fuse links.
- Non-fused switched neutral on the left side.
- Suitable for three-phase and neutral electrical circuits.
- IP20 protected tunnel terminals for secure connections.
- Black ON-OFF external handle and operating shaft included as standard.
- Handle is IP65 protected and padlockable in the OFF position.
- Combines switching, electrical isolation and fuse protection in a compact OS Mini design.
Key Features
- ABB OS Fuse Switches series.
- OS Mini compact switch fuse design.
- 20 A rated operational current.
- Four-pole construction.
- A1 fuse size.
- Side operated configuration.
- Non-fused switched neutral positioned on the left side.
- Rated for AC-20 to AC-23 duties at up to 690 V AC.
- 7.5 kW AC-23 rating at 415 V.
- 11 kW AC-23 rating at 500 V.
- 15 kW AC-23 rating at 690 V.
- IP20 protected tunnel terminals.
- IP65 external handle with OFF-position padlocking.
- Door interlocking with the handle in the ON position.
- Adjustable operating shaft supplied as standard.
Reliable Switching and Fuse Protection
Switch fuses combine manual load switching and electrical isolation with the overcurrent and short-circuit protection provided by correctly selected fuse links. This allows downstream circuits and equipment to be isolated for servicing or maintenance while suitable A1 fuse links provide dependable protection against electrical fault conditions.
The ABB OS Mini range provides compact switching solutions for applications where installation space is limited. The OS20FBS40A1N1 combines a 20 A four-pole configuration, A1 fuse compatibility and a non-fused switched neutral on the left side, making it particularly suitable for three-phase and neutral circuits requiring side operation.
Typical Applications
- Industrial low-voltage distribution boards.
- Electrical switchboards and control panels.
- Three-phase and neutral distribution circuits.
- Small machinery and equipment supplies.
- Feeder isolation and fuse protection.
- Commercial and industrial electrical installations.
Technical Specifications
| Series | OS Fuse Switches |
|---|---|
| Product ID | 1SCA108998R1001 |
| ABB product group | 311021-OS Fuse Switches |
| Product type | Side operated switch fuse |
| Rated operational current | 20 A |
| Number of poles | 4 |
| Fuse size | A1 |
| Rated operational voltage | up to 690 V AC |
| Rated operational power AC-23 at 415 V | 7.5 kW |
| Rated operational power AC-23 at 500 V | 11 kW |
| Rated operational power AC-23 at 690 V | 15 kW |
| Operation | Side operated |
| Neutral configuration | Non-fused switched neutral |
| Neutral position | Left side |
| Terminal type | Protected tunnel terminals |
| Terminal protection | IP20 |
| Included shaft | OXP6X70-V0 |
| Included handle | OHB65J6 |
| Handle protection | IP65 |
| Handle locking | Padlockable in OFF position |
| Door interlock | Interlocked in ON position |
| Shaft mounting depth | 189–201 mm for four-pole configuration |
| Weight | approx. 0.9 kg |
Frequently Asked Questions
What is the ABB OS20FBS40A1N1 used for?
The ABB OS20FBS40A1N1 is a 20 A four-pole side operated switch fuse used for switching, isolation and fuse protection in low-voltage electrical distribution systems.
What fuse size does the OS20FBS40A1N1 use?
The OS20FBS40A1N1 is specifically designed for A1 fuse links.
How many poles does the OS20FBS40A1N1 have?
The OS20FBS40A1N1 has four poles and incorporates a non-fused switched neutral on the left side.
What are the power ratings of the ABB OS20FBS40A1N1?
The switch fuse has AC-23 operational power ratings of 7.5 kW at 415 V, 11 kW at 500 V and 15 kW at 690 V.
Does the ABB OS20FBS40A1N1 include a handle and shaft?
Yes. The OS20FBS40A1N1 is supplied with an OXP6X70-V0 operating shaft and OHB65J6 external handle. The handle is IP65 protected, padlockable in the OFF position and provides door interlocking in the ON position.
Trusted by Electrical Professionals Worldwide
ABB OS fuse switches provide reliable switching, isolation and fuse protection for low-voltage electrical distribution applications, with compact configurations designed for industrial switchboards, control panels and machinery installations.
