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ABB vm205/265 mechanical interlock unit
ABB VM205/265 mechanical interlock unit designed for interlocking ABB AF190 to AF370 contactors in industrial reversing motor starter applications.
£16.87
Why Choose the ABB 1SFN035203R1000 VM205/265 Mechanical Interlock Unit?
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.
Key Advantages
- Provides reliable mechanical interlocking between two contactors.
- Prevents simultaneous closing of both contactors.
- Designed for ABB AF190 to AF205 and AF265 to AF370 contactors.
- Ideal for reversing and changeover motor starter assemblies.
- Compact design enables straightforward installation.
- Improves operational safety and system reliability.
Key Features
- ABB VM205/265 mechanical interlock unit.
- Part number 1SFN035203R1000.
- Mechanical interlock accessory.
- Designed for two compatible ABB contactors.
- Suitable for AF116...AF205 contactors.
- Interlocks AF190...AF205 with AF265...AF370 contactors.
- Compact side-by-side installation.
- Maintenance-free mechanical operation.
- Robust industrial construction.
- Suitable for industrial motor control systems.
Safe Mechanical Interlocking for Industrial Contactors
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.
Typical Applications
- Reversing motor starters.
- Forward and reverse motor control.
- Industrial control panels.
- Automatic transfer and changeover systems.
- Machine building.
- OEM automation equipment.
- Industrial switchgear assemblies.
Technical Specifications
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| Device Type | Accessory | |
|---|---|---|
| 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 |
Frequently Asked Questions
What is the ABB 1SFN035203R1000 used for?
It is a mechanical interlock unit that prevents two compatible ABB contactors from closing simultaneously in reversing and changeover applications.
Which contactors is the VM205/265 compatible with?
It is designed for ABB AF116 to AF205 contactors and is specifically intended to interlock AF190 to AF205 with AF265 to AF370 contactors.
Why is a mechanical interlock required?
Mechanical interlocking prevents simultaneous operation of reversing or transfer contactors, protecting motors, power circuits and electrical equipment from faults.
Does the VM205/265 require electrical wiring?
No. The unit operates entirely mechanically and requires no electrical connections.
Where is the VM205/265 typically installed?
It is mounted directly between two compatible ABB contactors in reversing motor starters and industrial transfer switching assemblies.
Trusted by Industrial Automation Professionals
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.
