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OETLZW12 ABB Change-Over Attachment I-O-II
ABB OETLZW12 is an I-O-II change-over attachment designed to mechanically connect two compatible 3-pole or 4-pole ABB switch-disconnectors for manual change-over applications.
£319.56
Why Choose the ABB OETLZW12 Change-Over Attachment?
The ABB OETLZW12 is a robust change-over attachment / change-over switch mechanism designed for compatible ABB low-voltage switch-disconnectors. Identified by ABB order code 1SCA022078R0200, it forms part of the ABB OT/OETL accessories product group and mechanically connects two compatible switches to create a coordinated change-over arrangement.
The OETLZW12 connects two 3-pole or 4-pole switches through a common mechanism operating through I-O-II positions. This arrangement enables selection between two electrical sources or circuits while providing a defined centre OFF position, making the mechanism suitable for manual change-over and transfer applications in industrial power distribution systems.
For current compatible ABB switch-disconnector ranges, the OETLZW12 is specified for OT630...800E and OT600U switches and accommodates a shaft distance of 210+(0...20) × 20 mm. The attachment has a unit weight of approximately 4.60 kg and provides a purpose-designed ABB mechanical solution for constructing compatible change-over switch assemblies.
Key Advantages
- Genuine ABB change-over attachment for compatible switch-disconnectors.
- Mechanically connects two 3-pole or 4-pole switches.
- Provides defined I-O-II change-over operation.
- Suitable for compatible OT630...800E and OT600U switch-disconnectors.
- Adjustable shaft distance supports different switchgear layouts.
- Purpose-designed mechanical solution for manual source and circuit change-over applications.
Key Features
- ABB OETLZW12 change-over switch mechanism.
- Designed for two 3-pole or 4-pole switches.
- I-O-II operating positions.
- Compatible with OT630...800E and OT600U switch-disconnectors.
- 210+(0...20) × 20 mm shaft distance.
- Approximate unit weight of 4.60 kg.
- ABB order code 1SCA022078R0200.
- Part of the ABB OT/OETL accessories product group.
Reliable Mechanical Change-Over for Power Distribution
A change-over mechanism mechanically coordinates two switch-disconnectors so that the assembly can select between two circuits or power sources. The I-O-II operating sequence provides a centre OFF position between the two connected states, supporting controlled manual transfer in compatible electrical distribution arrangements.
The ABB OETLZW12 provides this functionality by connecting two compatible 3-pole or 4-pole switch-disconnectors through a dedicated mechanical mechanism. Its adjustable shaft-distance arrangement makes it suitable for integration into industrial switchboards and distribution panels requiring a robust manual change-over solution.
Typical Applications
- Manual mains and alternative-supply change-over systems.
- Generator and utility source selection.
- Industrial power distribution switchboards.
- Low-voltage change-over switch assemblies.
- Electrical distribution and control panels.
- Industrial installations requiring I-O-II source selection.
Technical Specifications
| Series | OETLZW |
|---|---|
| ABB order code | 1SCA022078R0200 |
| Product group | 311020-OT/OETL Accessories |
| Product type | Change-over attachment / change-over switch mechanism |
| Operating positions | I-O-II |
| Switch arrangement | Two switches |
| Compatible pole configurations | 3-pole or 4-pole |
| Suitable switches | OT630...800E / OT600U |
| Shaft distance | 210+(0...20) × 20 mm |
| Weight | approx. 4.60 kg |
Frequently Asked Questions
What is the ABB OETLZW12?
The ABB OETLZW12 is a change-over attachment and switch mechanism that mechanically connects two compatible ABB switch-disconnectors for I-O-II operation.
How many switches does the ABB OETLZW12 connect?
The OETLZW12 is designed to connect two compatible 3-pole or 4-pole switches into a coordinated change-over arrangement.
What operating positions does the OETLZW12 provide?
The mechanism provides I-O-II positions, allowing selection of either connected switching position with a centre OFF position.
Which ABB switches are compatible with the OETLZW12?
Current ABB switch-disconnector documentation specifies the OETLZW12 for compatible OT630...800E and OT600U switches.
What shaft distance does the ABB OETLZW12 support?
The OETLZW12 supports a shaft distance of 210+(0...20) × 20 mm, allowing the mechanism to accommodate applicable switchgear layouts.
Trusted by Power Distribution Professionals Worldwide
ABB OT/OETL accessories provide purpose-designed mechanical operating solutions for compatible ABB low-voltage switch-disconnectors, supporting dependable manual change-over, isolation and power-distribution applications.
