ABB 1SFN035100R1000 VM300/460H is a mechanical interlock unit that prevents simultaneous operation of two compatible horizontally mounted ABB contactors of different ratings.
£53.30
The ABB 1SFN035100R1000, manufacturer designation VM300/460H, is a purpose-designed mechanical interlock unit for two horizontally mounted ABB contactors of different ratings. It physically prevents both contactors from closing simultaneously, supporting safe operation in reversing, changeover and transfer-control circuits.
As a genuine ABB contactor accessory, the VM300/460H provides direct mechanical coordination between compatible contactors. Its interlocking action operates independently of the electrical control circuit and can be used with compatible AC-operated or DC-operated contactors.
The VM300/460H is suitable for specified ABB AF265 to AF460 and AFS265 to AFS460 block contactors when selected according to ABB’s compatibility tables. Its horizontal mounting arrangement makes it practical for coordinated switching assemblies where differently rated contactors must not operate together.
Mechanical interlocks create a physical link between two contactors so that closing one prevents the other from closing. This provides additional protection in circuits where simultaneous switching could cause conflicting power connections or unsafe equipment operation.
The ABB VM300/460H is designed for applications combining compatible contactors of different ratings. It can complement electrical interlocking within the control circuit while continuing to provide physical separation independently of the contactor control supply.
| Manufacturer | ABB |
|---|---|
| Series | VM300/460H |
| Model | VM300/460H |
| Order code | 1SFN035100R1000 |
| Product type | Mechanical interlock unit |
| Interlocked devices | 2 contactors |
| Mounting arrangement | Horizontal |
| Operating principle | Mechanical interlocking |
| Contactor operation | AC or DC operated |
| Suitable for | ABB AF265, AF305, AF370, AF400 and AF460 contactors |
| Also suitable for | ABB AFS265, AFS305, AFS370, AFS400 and AFS460 contactors |
| Dimensions (H × W × D) | 123.6 × 70 × 50 mm |
| Product net weight | 0.15 kg |
The ABB VM300/460H mechanically interlocks two compatible horizontally mounted contactors of different ratings so that they cannot close simultaneously.
The VM300/460H is designed to mechanically interlock two compatible contactors.
It is suitable for specified ABB AF265 to AF460 and AFS265 to AFS460 contactors, subject to ABB’s compatibility tables.
Yes. The VM300/460H can interlock compatible AC-operated or DC-operated contactors.
The VM300/460H is designed for an assembly in which two compatible contactors are mounted horizontally.
ABB mechanical interlock units provide dependable physical coordination between compatible contactors, helping prevent conflicting switching states in industrial motor-control and changeover systems.
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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...