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OTZ1250E ABB Fourth Pole for OT1000–1250E Switch-Disconnectors
ABB OTZ1250E is a side-mounted fourth-pole accessory for compatible OT1000–1250E three-pole switch-disconnectors that operates simultaneously with the main contacts.
£365.43
Why Choose the ABB OTZ1250E Fourth Pole?
The ABB OTZ1250E is a dedicated fourth-pole accessory designed for compatible ABB OT switch-disconnectors. It allows a three-pole switch to be converted into a four-pole arrangement where an additional switched conductor is required, providing a manufacturer-engineered solution for expanding the switching configuration.
Designed for ABB OT1000–1250E switch-disconnectors, the OTZ1250E mounts on the side of the three-pole switch without requiring wide phase distances. Once installed, the additional pole operates simultaneously with the main contacts, maintaining coordinated switching across all four poles.
The OTZ1250E is an original ABB accessory with order code 1SCA103765R1001 and a unit weight of approximately 4.30 kg. Its purpose-built construction makes it suitable for high-current switchboard, distribution and industrial isolation applications where a compatible OT1000–1250E three-pole switch requires a fourth switched pole.
Key Advantages
- Genuine ABB fourth-pole accessory for compatible OT switch-disconnectors.
- Designed specifically for OT1000–1250E switch-disconnectors.
- Converts a compatible three-pole switch into a four-pole switching arrangement.
- Additional pole operates simultaneously with the main contacts.
- Side-mounted design supports straightforward integration with the main switch.
- Does not require the wide phase-distance version of the compatible switch.
- Provides an ABB-engineered alternative to separately configured switching components.
- Suitable for demanding high-current electrical distribution and isolation assemblies.
Key Features
- ABB OTZ series switch-disconnector accessory.
- Fourth-pole / additional-pole configuration.
- Compatible with ABB OT1000–1250E switches.
- Designed for installation alongside a compatible 3-pole switch-disconnector.
- Simultaneous operation with the main switch contacts.
- Mountable on the side of the switch.
- Suitable for switches without wide phase distances.
- Purpose-designed mechanical integration with compatible ABB OT equipment.
- Approximate unit weight of 4.30 kg.
Additional Pole for ABB OT Switch-Disconnectors
A fourth-pole accessory extends a compatible three-pole switch-disconnector so an additional conductor can be switched together with the three main poles. This is useful in electrical installations where the system design requires four conductors to be disconnected simultaneously rather than leaving the fourth conductor permanently connected.
The ABB OTZ1250E is engineered specifically for OT1000–1250E switch-disconnectors and mechanically follows the operation of the main contacts. Its side-mounted arrangement provides an integrated four-pole solution while retaining compatibility with the intended ABB OT switching platform.
Typical Applications
- Four-pole switch-disconnector configurations.
- ABB OT1000–1250E switch installations.
- High-current electrical distribution boards.
- Industrial switchgear assemblies.
- Main incoming isolation systems.
- Three-phase systems requiring an additional switched conductor.
- OEM power distribution and control equipment.
Technical Specifications
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| Device Type | Accessory | |
|---|---|---|
| Product Series | ABB OT | |
| Series | OTZ | |
| ABB order code | 1SCA103765R1001 | |
| Product type | Fourth pole for switch-disconnector | |
| Accessory type | Additional switched pole | |
| Number of additional poles | 1 | |
| Compatible switch range | ABB OT1000–1250E | |
| Compatible base configuration | 3-pole switch-disconnector | |
| Operating function | Simultaneous with main contacts | |
| Mounting position | Side of compatible switch | |
| Phase-distance requirement | Suitable for switches without wide phase distances | |
| Unit weight | approx. 4.30 kg | |
| Application | Conversion of compatible three-pole ABB OT switch-disconnectors to four-pole switching |
Frequently Asked Questions
What is the ABB OTZ1250E used for?
The ABB OTZ1250E is a fourth-pole accessory used to add an additional switched pole to compatible ABB OT1000–1250E three-pole switch-disconnectors.
Which ABB switches are compatible with the OTZ1250E?
The OTZ1250E is designed for compatible ABB OT1000–1250E switch-disconnectors.
Does the OTZ1250E operate with the main switch contacts?
Yes. The OTZ1250E is designed so that its additional pole operates simultaneously with the main contacts of the compatible switch-disconnector.
Where is the OTZ1250E installed?
The OTZ1250E is mounted on the side of the compatible three-pole switch and is intended for switches without wide phase distances.
What is the weight of the ABB OTZ1250E?
The ABB OTZ1250E has an approximate unit weight of 4.30 kg.
Purpose-Built Switch Accessories from ABB
ABB OTZ fourth-pole accessories provide an engineered way to extend compatible OT switch-disconnectors from three-pole to four-pole operation, maintaining simultaneous contact operation and straightforward integration within high-current electrical distribution assemblies.
