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OTZW24 ABB Mechanical Interlock for OT16–125E
ABB OTZW24 is a mechanical interlock mechanism for compatible OT16–125E switch-disconnectors, designed to coordinate two switches with a 100 mm shaft distance and prevent incompatible switching states.
£26.34
Why Choose the ABB OTZW24 Mechanical Interlock?
The ABB OTZW24 is a purpose-designed mechanical interlock mechanism for compatible ABB OT switch-disconnectors. Part of the ABB OT/OETL accessory range, it is specified for the OT16–125E range and mechanically coordinates two switches so that their operating states are interdependent.
In its standard arrangement, the OTZW24 prevents one switch from moving to the ON position unless the other switch is in the OFF position. This provides a purely mechanical means of preventing both interconnected switches from being closed simultaneously, making the accessory useful in switching arrangements where mutually exclusive operation is required.
The OTZW24 is designed for two switches with a 100 mm shaft distance and has an approximate unit weight of 0.08 kg. When installed upside down, the mechanism can instead prevent one switch from moving to OFF unless the other is ON, enabling make-before-break operation for suitable UPS applications.
Key Advantages
- Purpose-designed mechanical interlock for ABB OT16–125E switch-disconnectors.
- Prevents one switch from reaching ON unless the interconnected switch is OFF.
- Provides mechanical coordination without relying on electrical interlocking.
- Designed around a 100 mm shaft distance.
- Can be mounted upside down for suitable make-before-break UPS applications.
- Genuine ABB accessory engineered for coordinated switch-disconnector combinations.
Key Features
- ABB OTZW24 mechanical interlock mechanism.
- Part of the ABB OT/OETL accessory range.
- Specified for OT16–125E applications.
- Designed to mechanically interlock two switches.
- 100 mm shaft distance.
- Standard operation prevents simultaneous ON states.
- Alternative upside-down mounting supports make-before-break operation.
- Approximate unit weight of 0.08 kg.
Mechanical Coordination of Two ABB OT Switches
The ABB OTZW24 mechanically links two compatible switch-disconnectors so that the position of one switch controls whether the other can be operated. In its standard installation, one switch cannot move to ON unless the second switch is already OFF, preventing both interconnected switches from being closed at the same time.
ABB also permits the mechanism to be mounted upside down, reversing the interlocking logic so that one switch cannot move to OFF unless the other is ON. This arrangement supports suitable UPS make-before-break applications where continuity between switching states is required. The mechanical operating principle makes the OTZW24 a dedicated solution for coordinated two-switch assemblies.
Typical Applications
- ABB OT16–125E switch-disconnector combinations.
- Mechanically interlocked two-switch assemblies.
- Industrial source-selection systems.
- Electrical distribution and control panels.
- Switching arrangements requiring prevention of simultaneous ON states.
- Suitable UPS systems requiring make-before-break mechanical operation.
Technical Specifications
| Series | OTZW / OT/OETL Accessories |
|---|---|
| ABB order code | 1SCA022639R5610 |
| Product type | Mechanical interlock mechanism |
| Specified switch range | OT16–125E |
| Number of interconnected switches | 2 |
| Shaft distance | 100 mm |
| Standard interlock function | Prevents one switch moving to ON unless the other is OFF |
| Alternative mounting function | Prevents one switch moving to OFF unless the other is ON |
| Alternative application | UPS make-before-break switching |
| Product net weight | approx. 0.08 kg |
| ABB order quantity | 1 piece |
Frequently Asked Questions
What is the ABB OTZW24?
The ABB OTZW24 is a mechanical interlock mechanism designed for compatible ABB OT16–125E switch-disconnector combinations.
What does the ABB OTZW24 mechanical interlock do?
In its standard configuration, the OTZW24 prevents one switch from moving to the ON position unless the other interconnected switch is in the OFF position.
What shaft distance is required for the OTZW24?
The ABB OTZW24 is designed for an interlocked switch arrangement with a 100 mm shaft distance.
How many switches does the OTZW24 interlock?
The OTZW24 mechanically coordinates two compatible switch-disconnectors.
Can the OTZW24 be used for make-before-break operation?
Yes. When the mechanism is mounted upside down, it can prevent one switch from moving to OFF unless the other switch is ON, providing a make-before-break arrangement for suitable UPS applications.
What is the approximate weight of the ABB OTZW24?
The ABB OTZW24 has an approximate unit weight of 0.08 kg.
Trusted ABB Accessories for Interlocked Switching
ABB OT switch-disconnector accessories are engineered for coordinated integration with compatible ABB switching products, helping panel builders, machinery manufacturers and electrical engineers create dependable mechanically interlocked switching and isolation assemblies.
