VM4 Contactor mechanical lock 1SBN030105T1000

Mechanical interlocks for contactors – safety and reliability

The VM4 mechanical interlock is a safety element designed to work with contactors of the AF09…AF38 series. Its main task is to prevent the simultaneous switching on of two adjacent contactors, which increases work safety and protects the installation from damage. The interlock is easy to install and does not require additional space, making it ideal for use in tight switchgear cabinets.

Application and functionality

The VM4 interlock prevents accidental short circuits that could occur when two contactors are switched on simultaneously. This is particularly important in motor control systems, where uncontrolled switching can lead to overload and failure. The device includes two mounting clips (BB4) that provide a stable and secure connection to the contactors. The interlock is compatible with 3-pole and 4-pole AF09…AF38, AFC09...AFC38, AFS09...AFS38 models.

Construction and installation

The VM4 mechanical interlock is characterized by a compact design and ease of installation. It does not require special tools or skills – simply place it between two contactors and secure it with the included clips. This makes installation quick and intuitive, for both professionals and less experienced users. Solid construction guarantees long-lasting and trouble-free operation of the device in various environmental conditions.

Why choose the VM4 interlock?

• Increased safety: Prevents accidental short circuits and damage to the installation.
• Simple installation: Does not require specialized tools or skills.
• Compact size: Does not take up additional space in the switchgear cabinet.
• Wide compatibility: Designed to work with popular ABB contactors of the AF09…AF38 series.
• Durable construction: Ensures long-lasting and trouble-free operation.
• Collaboration with other elements: Possibility of use with additional ABB accessories for full functionality of the control system.