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OSP250D ABB Fusible Fourth Pole for OS250D
ABB OSP250D 1SCA022735R9340 is a fusible fourth-pole accessory for compatible ABB OS250D switch-fuses with left- or right-side mounting for extending a 3-pole switch to a four-pole fusible configuration.
£101.83
Why Choose the ABB OSP250D Fusible Fourth Pole?
The ABB OSP250D, order code 1SCA022735R9340, is a genuine ABB fusible fourth-pole accessory designed specifically for compatible ABB OS250D switch-fuses. As part of the ABB 311031-OS/OESA Accessories product group, it enables a compatible 3-pole OS250D switch-fuse to be extended with an additional switched and fused pole.
The OSP250D is purpose-designed for the OS250D platform and uses a snap-on side-mounting arrangement. It can be installed on either the left or right side of a compatible 3-pole switch, providing installation flexibility when configuring a four-pole switch-fuse assembly.
Unlike a switched fourth pole without fuse protection, the OSP250D is a fusible fourth pole, allowing the additional conductor to incorporate a fuse as part of the switching arrangement. Its matching ABB design helps maintain the mechanical and functional integration required for compatible OS250D installations.
Key Advantages
- Genuine ABB fusible fourth-pole accessory.
- Designed specifically for ABB OS250D switch-fuses.
- Converts a compatible 3-pole arrangement to a four-pole configuration.
- Additional pole is switched and fusible.
- Can be mounted on the left or right side of the switch.
- Snap-on mounting provides purpose-designed integration with the switch.
- ABB-engineered accessory for correct mechanical compatibility.
- Suitable for industrial low-voltage switch-fuse assemblies.
Key Features
- ABB OSP250D fourth pole.
- ABB order code 1SCA022735R9340.
- Part of the 311031-OS/OESA Accessories product group.
- Fusible fourth-pole construction.
- Suitable for OS250D switch-fuses.
- Designed for compatible 3-pole switches.
- Left- or right-side mounting.
- Purpose-designed side-mounted construction.
- Suitable for creating a compatible 4-pole switch-fuse arrangement.
Adding a Fusible Fourth Pole to an OS250D Switch-Fuse
A fourth-pole accessory extends a compatible three-pole switching device so that an additional conductor can be switched together with the main poles. In the case of the ABB OSP250D, the additional pole is also fusible, distinguishing it from fourth-pole accessories that provide switching only without a fuse position.
The OSP250D is engineered specifically for the ABB OS250D and can be fitted on either side of the compatible 3-pole switch-fuse. This modular approach allows an OS250D installation to be configured as a four-pole fusible switching arrangement while using a dedicated ABB accessory matched to the switch platform.
Typical Applications
- ABB OS250D switch-fuse installations.
- Conversion of compatible 3-pole OS250D equipment to four poles.
- Four-pole low-voltage power distribution systems.
- Applications requiring a switched and fused fourth conductor.
- Industrial electrical switchboards.
- Power distribution and isolation panels.
- OEM panel building and switchgear assemblies.
Technical Specifications
| Product group | 311031-OS/OESA Accessories |
|---|---|
| Model / type | OSP250D |
| Order code | 1SCA022735R9340 |
| Product type | Fusible fourth pole |
| Suitable switch | OS250D |
| Base switch configuration | 3-pole |
| Resulting configuration | 4-pole |
| Fourth-pole function | Switched and fusible |
| Mounting side | Left or right |
| Mounting arrangement | Side-mounted |
| Unit weight | approx. 1.20 kg |
Frequently Asked Questions
What is the ABB OSP250D?
The ABB OSP250D is a fusible fourth-pole accessory designed for compatible ABB OS250D switch-fuses, allowing a 3-pole arrangement to be extended to four poles.
Which ABB switch-fuse is compatible with the OSP250D?
The OSP250D is specifically designed for the ABB OS250D switch-fuse platform.
Is the ABB OSP250D a fusible or non-fusible fourth pole?
The OSP250D is a fusible fourth pole, meaning the additional pole provides both switching and a fuse position as part of the compatible OS250D assembly.
Can the ABB OSP250D be mounted on either side of the switch?
Yes. The OSP250D is designed for left- or right-side mounting on a compatible 3-pole OS250D switch-fuse.
What is the weight of the ABB OSP250D?
The ABB OSP250D has an approximate unit weight of 1.20 kg.
Genuine ABB Switch-Fuse Accessories
ABB fourth-pole accessories provide purpose-designed expansion for compatible switch-fuses, with the OSP250D adding a switched and fusible fourth pole to an ABB OS250D through a flexible left- or right-side mounting arrangement.
