# ABB VEM4 Mechanical and Electrical Interlock for AF Series Contactors

**URL:** https://aio.lv/en/product--abb-1sbn030111r1000--12444882
**Data updated:** 2026-05-18 02:43 (EEST)
**Category:** Home Appliance Accessories
**Manufacturer:** ABB
**Manufacturer code:** 1SBN030111R1000
**EAN:** 3471523130616
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 21.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--abb-1sbn030111r1000--12444882

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The ABB VEM4 is a mechanical and electrical interlock accessory designed for use with AF09 to AF38 series contactors. This unit ensures safe operation by preventing simultaneous closing of two contactors. It is an essential component for motor reversing or changeover applications, providing reliable switching control and system protection in industrial electrical installations.

## Long description

The ABB VEM4 mechanical and electrical interlock is a specialized accessory designed to enhance the safety and functionality of AF09 to AF38 series contactors. By preventing the simultaneous activation of two contactors, this unit provides a reliable solution for motor reversing and changeover applications in industrial electrical systems. The integrated design allows for side-by-side mounting without increasing the overall width of the installation, making it an efficient choice for space-constrained control panels.
Advantages
The VEM4 interlock set offers significant improvements in installation efficiency and operational safety. By combining both mechanical and electrical interlocking in a single unit, it ensures that two contactors cannot be energized at the same time, effectively preventing short circuits. The inclusion of the VE4 electrical block with A2-A2 connection simplifies the wiring process, reducing the required cabling by up to 50% compared to traditional interlocking methods. This streamlined approach not only saves time during assembly but also minimizes the potential for wiring errors, contributing to a more robust and reliable control system.
Suitable for
Motor reversing applications
Changeover switching systems
Industrial automation control panels
Safety-critical electrical installations
When it may not be suitable
This interlock is specifically engineered for the ABB AF09 to AF38 and AFC09 to AFC38 series contactors. It is not compatible with contactors outside of these specified ranges or from other manufacturers. Furthermore, it should not be used in applications where the electrical connection diagram does not support the A2-A2 configuration required by the VE4 block.
Key specifications
Compatible with AF09 to AF38 and AFC09 to AFC38 series contactors
Includes mechanical interlock unit VM4 with two fixing clips
Includes electrical interlock block VE4
Width: 25 mm
Depth: 31.6 mm
Height: 43 mm
How to use
To install the VEM4, mount the mechanical interlock unit between the two contactors using the provided fixing clips. The VE4 electrical interlock block is then mounted on the front of the contactors. Ensure that the A2-A2 connection is strictly followed according to the electrical diagram to enable the built-in normally closed (N.C.) contacts. Once properly secured, the unit will automatically prevent the simultaneous closing of the contactors, providing the necessary electrical and mechanical protection.
What to consider before purchase
Verify that your contactor model falls within the AF09 to AF38 or AFC09 to AFC38 range.
Ensure there is sufficient space for the 25 mm width of the interlock unit.
Confirm that your control circuit design supports the A2-A2 connection requirement.
Usage recommendations
Always verify that the power supply is disconnected before installing or servicing the interlock unit to ensure operator safety. Regularly inspect the mechanical and electrical connections to maintain optimal performance in your control system.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.035 kg |
| Height | 43 mm |
| Width | 25 mm |
| Depth | 31.6 mm |
| Compatible products | AF09
AF09Z
AF12
AF12Z
AF16
AF16Z
AF26
AF26Z
AF30
AF30Z
AF38
AF38Z
AFC09
AFC12
AFC16
AFC26
AFC30
AFC38
AF09B
AF09ZB
AF12B
AF12ZB
AF16B
AF16ZB
AF26B
AF26ZB
AF30B
AF30ZB
AF38B
AF38ZB |
| Package depth | 35 mm |
| Package height | 46 mm |
| Package width | 92 mm |
| Number of poles | 2 |

## FAQ

### How much does the ABB VEM4 Mechanical and Electrical Interlock cost, and is it available for purchase?

The price is 25.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 14.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All ABB products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized ABB service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12444882/68779545_large.webp