ABB VM5-1 mechanical interlock unit for ABB contactors, designed to prevent simultaneous contactor operation in motor control applications.
£17.48
The ABB 1SBN030100R1000 VM5-1 is a compact mechanical interlock unit designed for use with ABB contactors, providing reliable mechanical prevention of simultaneous contactor operation in reversing, changeover and star-delta starter applications. As part of the ABB contactor accessory range, it helps improve the safety and reliability of industrial motor control assemblies.
This mechanical interlock accessory is installed between two compatible ABB contactors to physically prevent both devices from closing at the same time. It provides a simple and effective solution for applications where electrical and mechanical interlocking are required to control contactor switching sequences.
With a compact design suitable for ABB A-series contactors, the VM5-1 enables space-efficient installation in motor control panels and automation systems where reliable contactor coordination is required.
Mechanical interlocks such as the ABB VM5-1 are used in contactor assemblies where two switching devices must not operate simultaneously. By physically linking the contactors, the interlock provides an additional layer of protection alongside electrical interlocking circuits.
The VM5-1 is widely used by panel builders, machine manufacturers and industrial automation engineers to create dependable motor control systems with reversing, changeover and starter control functions.
| Manufacturer | ABB |
|---|---|
| Series | Contactor Accessories |
| Model | VM5-1 |
| Product ID | 1SBN030100R1000 |
| Product type | Mechanical interlock unit |
| Suitable for | ABB A-series contactors |
| Function | Mechanical interlocking of contactors |
| Mounting type | Contactor mounted accessory |
| Standards | IEC/EN 60947-4-1, UL 60947-1, UL 60947-5-1 |
| Protection rating | IP20 |
| Dimensions (W × H × D) | 15 × 70 × 71 mm |
| Weight | 0.066 kg |
The ABB VM5-1 is a mechanical interlock unit used to prevent simultaneous operation of two compatible ABB contactors.
The VM5-1 is designed for ABB A-series contactors including compatible A9, A12, A16, A26, A30 and A40 contactor types.
The VM5-1 is installed between two contactors inside industrial control panels and motor control assemblies.
The VM5-1 provides mechanical interlocking. Electrical interlocking can be added using suitable normally closed auxiliary contacts connected to the contactor coils.
The VM5-1 has dimensions of approximately 15 × 70 × 71 mm.
ABB mechanical interlock units provide reliable contactor coordination solutions for motor control systems, helping engineers build safer and more dependable industrial automation equipment.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...