ABB VM205/265 mechanical interlock unit designed for interlocking ABB AF190 to AF370 contactors in industrial reversing motor starter applications.
£25.95
The ABB 1SFN035203R1000, also known as the VM205/265, is a heavy-duty mechanical interlock unit designed for use with ABB AF series contactors. It provides a reliable mechanical interlocking function between two compatible contactors, preventing both devices from closing simultaneously and ensuring safe operation in reversing motor starters and changeover applications.
Designed for industrial automation, OEM machinery and panel builders, the VM205/265 installs directly between two side-by-side contactors. Its compact construction eliminates the need for complex external interlocking devices while improving operational safety, simplifying installation and ensuring dependable long-term performance in demanding industrial environments.
Compatible with ABB AF116 to AF205 contactors and specifically designed for interlocking AF190 to AF205 with AF265 to AF370 contactors, the ABB 1SFN035203R1000 is an ideal accessory for reversing starters, transfer switching systems and industrial motor control assemblies.
Mechanical interlock units are essential in reversing starters and transfer switching applications where two contactors must never operate simultaneously. The ABB VM205/265 physically prevents one contactor from closing while the other remains energised, helping protect motors, power circuits and connected equipment from costly faults.
Its durable construction and direct mounting arrangement enable panel builders and OEM manufacturers to create compact, dependable motor control systems while maintaining high standards of operational safety and long-term reliability.
| Series | VM Mechanical Interlock Units |
|---|---|
| Part number | 1SFN035203R1000 |
| Product type | Mechanical interlock unit |
| Application | Reversing and changeover contactor interlocking |
| Compatible contactors | AF190, AF205, AF265, AF305, AF370 including B variants |
| Mounting type | Side-by-side contactor mounting |
| Connection compatibility | Screw terminal contactors |
| Construction | Industrial insulated thermoplastic and metal mechanism |
| Protection function | Prevents simultaneous contactor operation |
| Dimensions (W × H × D) | approx. 72 × 70.6 × 42 mm |
| Weight | approx. 0.09 kg |
| Standards | EN 60947-4-1, UL 60947-4-1 |
It is a mechanical interlock unit that prevents two compatible ABB contactors from closing simultaneously in reversing and changeover applications.
It is designed for ABB AF116 to AF205 contactors and is specifically intended to interlock AF190 to AF205 with AF265 to AF370 contactors.
Mechanical interlocking prevents simultaneous operation of reversing or transfer contactors, protecting motors, power circuits and electrical equipment from faults.
No. The unit operates entirely mechanically and requires no electrical connections.
It is mounted directly between two compatible ABB contactors in reversing motor starters and industrial transfer switching assemblies.
ABB VM mechanical interlock units are trusted by panel builders, OEM manufacturers and automation engineers for delivering dependable mechanical interlocking, enhanced operational safety and reliable long-term performance in industrial motor control systems.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...