# LSiS AR-180 Mechanical Interlock for MC-185a to MC-400a Contactors

**URL:** https://aio.lv/en/product--lsis-ar-180--12450263
**Data updated:** 2026-05-18 02:41 (EEST)
**Category:** Printer & Copier Parts
**Manufacturer:** LSiS
**Manufacturer code:** AR-180
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 44.99 €
**Prices and availability valid until:** 2026-07-10 23:59
**Price without VAT (21%):** 37.18 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lsis-ar-180--12450263

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

The LSiS AR-180 is a mechanical interlock device designed for use with LSiS MC-185a through MC-400a series contactors. This accessory ensures safe operation by preventing simultaneous closure of two contactors, which is essential for motor reversing or changeover applications. It provides a reliable physical link between units, enhancing system safety and preventing electrical faults in industrial control circuits.

## Long description

The LSiS AR-180 mechanical interlock is a precision-engineered accessory designed specifically for LSiS MC-185a through MC-400a series contactors. This device serves as a critical safety component in industrial electrical systems, providing a robust physical barrier that prevents two contactors from closing simultaneously. By ensuring that only one contactor can be engaged at any given time, the AR-180 effectively eliminates the risk of short circuits during motor reversing or power changeover operations.
Advantages
The primary benefit of the LSiS AR-180 is the enhanced operational safety it brings to complex control circuits. Its mechanical design is highly reliable, offering a fail-safe solution that does not depend on electrical signals or software logic. The installation process is straightforward, allowing for seamless integration with compatible contactor models. By preventing phase-to-phase faults, this interlock significantly extends the lifespan of your electrical equipment and protects the overall integrity of the control panel.
Suitable for
Motor reversing applications
Automatic transfer switch (ATS) changeover systems
Industrial automation control panels
Power distribution systems requiring interlocking logic
When it may not be suitable
This mechanical interlock is exclusively designed for the LSiS MC-185a to MC-400a contactor range. It is not compatible with contactors from other manufacturers or different series within the LSiS product line. Furthermore, it is intended for mechanical interlocking only and does not provide electrical interlocking functions on its own.
Key specifications
Compatibility: LSiS MC-185a, MC-225a, MC-265a, MC-330a, and MC-400a contactors
Function: Mechanical interlocking for two contactors
Application: Reversing and changeover circuits
Construction: Durable industrial-grade materials
How to use
To install the AR-180, ensure that the power supply to the contactors is completely disconnected. Mount the interlock unit between the two contactors according to the provided mechanical alignment points. Ensure that the linkage is securely fastened and that the mechanical movement is smooth and unobstructed. Before applying power, manually test the interlock by attempting to engage both contactors simultaneously to verify that the mechanism prevents both from closing at once.
What to consider before purchase
Verify your contactor model number matches the supported range
Ensure there is sufficient physical space on the DIN rail or mounting plate
Confirm that your application requires mechanical rather than purely electrical interlocking
Usage recommendations
Regularly inspect the mechanical linkage for signs of wear or debris accumulation to ensure continued reliable operation. Always perform a manual test after any maintenance or adjustment to the contactor assembly.

## FAQ

### How much does the LSiS AR-180 Mechanical Interlock for MC-185a-400a cost, and is it available for purchase?

The price is 44.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 02.07.2026 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 LSiS 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 LSiS 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/12450263/68753036_large.webp