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ABB vem4 mechanical and electrical interlock set
ABB VEM4 mechanical and electrical interlock set including VM4 mechanical interlock and VE4 electrical interlock block for ABB AF, AFC and AFS contactors.
£16.97
Why Choose the ABB VEM4 Mechanical and Electrical Interlock Set?
The ABB VEM4 (1SBN030111R1000) is a high quality mechanical and electrical interlock set designed for the safe interlocking of two ABB AF series contactors mounted side by side. Combining both mechanical and electrical interlocking in one assembly, it prevents simultaneous energisation of both contactors, making it ideal for reversing motor starters and changeover applications.
Manufactured to ABB's renowned engineering standards, the VEM4 set includes a VM4 mechanical interlock unit, VE4 electrical interlock block and two BB4 fixing clips. The integrated electrical interlock connects the built-in normally closed contacts directly to both contactor coils using an A2-A2 connection, reducing wiring by up to 50% compared with conventional interlocking methods.
Designed specifically for ABB AF09 to AF38 and AFC09 to AFC38 contactors, the VEM4 provides a compact solution that installs without increasing the overall width of the contactor assembly, making it ideal for industrial automation panels, OEM machinery and motor control centres.
Key Advantages
- Combined mechanical and electrical interlock set.
- Prevents simultaneous operation of two contactors.
- Reduces interlock wiring by up to 50%.
- No additional assembly width required.
- Simple installation using integrated A2-A2 electrical connection.
- Ideal for reversing starters and changeover systems.
Key Features
- ABB VEM4 Mechanical and Electrical Interlock Set.
- Manufacturer part number: 1SBN030111R1000.
- Includes VM4 mechanical interlock.
- Includes VE4 electrical interlock block.
- Supplied with two BB4 fixing clips.
- Compatible with ABB AF09...AF38 and AFC09...AFC38 contactors.
- Screw terminal connections.
- Designed for reversing motor starter applications.
Safe Interlocking for Reversing Motor Starters
The ABB VEM4 combines mechanical and electrical interlocking to ensure two contactors cannot operate simultaneously. This dual protection helps safeguard motors, equipment and personnel while simplifying wiring and reducing installation time.
Its compact design makes it particularly suitable for reversing motor starters, changeover systems and industrial automation panels where reliability and space efficiency are essential.
Typical Applications
- Reversing motor starters.
- Forward and reverse motor control.
- Changeover switching systems.
- Industrial control panels.
- OEM machinery.
- Motor control centres.
Technical Specifications
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| Terminal Type | Screw | |
|---|---|---|
| Phase | Three Phase | |
| IP Rating | IP20 | |
| Device Type | Accessory | |
| Auxiliary Contacts | 2NC | |
| Series | VEM4 | |
| Part number | 1SBN030111R1000 | |
| Product type | Mechanical and electrical interlock set | |
| Accessory type | Contactor interlock set | |
| Included components | VM4 mechanical interlock, VE4 electrical interlock block, 2 × BB4 fixing clips | |
| Mounting method | Side-by-side between contactors | |
| Compatible contactors | ABB AF09...AF38, AFC09...AFC38, AFS09...AFS38 | |
| Compatible poles | 3-pole and 4-pole contactors | |
| Auxiliary contacts | 2 NC | |
| Additional width required | None | |
| Rated insulation voltage | 690 V | |
| Maximum operating voltage UL/CSA | 500 V AC/DC | |
| Impulse withstand voltage | 6 kV | |
| Maximum electrical switching frequency | 1200 cycles/hour | |
| Maximum mechanical switching frequency | 1800 cycles/hour | |
| Mechanical durability | approx. 5 million operations | |
| Terminal type | Screw terminals | |
| Tightening torque | 1.2 N·m | |
| Protection rating | IP20 | |
| Standards | IEC/EN 60947-4-1, IEC/EN 60947-5-1, UL 60947-1, UL 60947-4-1, CSA C22.2 | |
| Dimensions (H × W × D) | approx. 43 × 25 × 31.6 mm | |
| Weight | approx. 0.035 kg | |
| EAN | 3471523130616 |
Frequently Asked Questions
What is the ABB VEM4 used for?
The VEM4 mechanically and electrically interlocks two compatible ABB contactors to prevent simultaneous operation.
What does the VEM4 kit include?
The kit includes a VM4 mechanical interlock unit, a VE4 electrical interlock block and two BB4 fixing clips.
Which contactors is the VEM4 compatible with?
It is designed for ABB AF09...AF38 and AFC09...AFC38 contactors installed side by side.
Does the VEM4 require additional panel space?
No. The VEM4 installs without increasing the overall width of the contactor assembly.
What is the advantage of the integrated electrical interlock?
The integrated VE4 electrical interlock reduces wiring by up to 50% compared with conventional interlocking arrangements while providing reliable protection.
Trusted by Machine Builders Worldwide
ABB VEM mechanical and electrical interlock sets are trusted by electrical engineers, OEM manufacturers and panel builders for safe, dependable interlocking in industrial motor control and reversing applications.
