Why Choose the ABB VH800 Mechanical Interlock Unit?
The ABB VH800 Mechanical Interlock Unit (SK829070-F) is a heavy-duty mechanical interlock accessory designed for use with compatible ABB EH, EHDB and EK series block contactors. It prevents two horizontally mounted contactors from closing simultaneously, providing a safe and reliable mechanical interlocking solution for reversing starters, changeover circuits and industrial motor control applications.
Manufactured as a genuine ABB accessory, the VH800 improves operational safety by physically preventing simultaneous contactor operation. Its robust construction and precision engineering make it suitable for demanding industrial environments where reliable switching and equipment protection are essential.
Designed for large ABB block contactors, the VH800 is widely used by panel builders, OEM machine manufacturers and maintenance engineers in motor control centres, power distribution systems and industrial automation installations. The unit includes the required mounting plate for straightforward installation.
Key Advantages
- Genuine ABB mechanical interlock unit.
- Prevents simultaneous closing of two horizontally mounted contactors.
- Improves operational safety in reversing and changeover applications.
- Designed for ABB EH, EHDB and EK series block contactors.
- Heavy-duty construction for demanding industrial environments.
- Simple installation using the supplied mounting plate.
Key Features
- ABB VH800 mechanical interlock unit.
- Manufacturer part number: SK829070-F.
- Mechanical locking accessory.
- Horizontal mounting configuration.
- Suitable for reversing contactor assemblies.
- Compatible with selected ABB EH, EHDB and EK block contactors.
- Heavy-duty industrial construction.
- Original ABB accessory for guaranteed compatibility.
Reliable Mechanical Interlocking for Industrial Safety
Mechanical interlock units are essential safety accessories used to prevent two contactors from closing at the same time. The ABB VH800 provides dependable mechanical locking that protects motors, electrical equipment and switching systems from potentially damaging simultaneous operation.
The VH800 is commonly installed in reversing motor starters, transfer switching equipment and changeover systems where reliable mechanical interlocking is required alongside electrical control circuits. Its durable construction ensures long service life in demanding industrial applications.
Typical Applications
- Reversing motor starters.
- Changeover switching systems.
- Motor control centres.
- Industrial switchgear.
- OEM machinery.
- Industrial automation and power distribution systems.
