# LSiS MC-40a Contactor 40A 3-Pole 18.5kW 24V AC 1NO 1NC

**URL:** https://aio.lv/en/product--lsis-mc-40a-24vac-1a1b--12462943
**Data updated:** 2026-05-18 09:28 (EEST)
**Category:** Control Systems
**Manufacturer:** LSiS
**Manufacturer code:** MC-40a 24VAC 1a1b
**EAN:** 8809512800809
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 64.99 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 53.71 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lsis-mc-40a-24vac-1a1b--12462943

## 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 LSiS MC-40a is a high-performance 3-pole industrial contactor designed for reliable electrical circuit control. It features a 40A rated current, 18.5kW power capacity, and a 24V AC control coil. Equipped with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, this device is ideal for motor starting and power switching applications in industrial automation systems.

## Long description

The LSiS MC-40a is a robust 3-pole industrial contactor engineered for efficient electrical circuit management and reliable power switching. Designed to handle demanding industrial environments, this contactor provides a rated current of 40A and a power capacity of 18.5kW, making it a dependable component for controlling motors and various electrical loads. It operates with a 24V AC control coil and includes integrated auxiliary contacts to facilitate seamless integration into complex automation systems.
Advantages
This contactor stands out due to its high operational reliability and durable construction, which ensures consistent performance even under frequent switching conditions. The inclusion of both normally open and normally closed auxiliary contacts offers enhanced flexibility for control circuit design and feedback monitoring. Its compact 3-pole design allows for efficient use of space within electrical cabinets, while the standardized 24V AC coil voltage ensures compatibility with common industrial control power supplies.
Suitable for
Motor starting applications
Industrial automation systems
Power switching for heating and lighting circuits
Control panel integration
When it may not be suitable
This device is not intended for use in high-voltage applications exceeding its rated capacity or in environments with extreme corrosive gases. It is also not suitable for DC power switching applications as it is specifically designed for an AC control coil.
Key specifications
Rated current: 40A
Number of poles: 3
Power capacity: 18.5kW
Control coil voltage: 24V AC
Auxiliary contacts: 1 normally open (NO), 1 normally closed (NC)
How to use
Installation should be performed by a qualified professional in accordance with local electrical regulations. The contactor is typically mounted on a standard DIN rail or via screw mounting inside an electrical enclosure. Connect the main power lines to the primary terminals and the control circuit wires to the coil terminals. Ensure all connections are tightened to the specified torque to prevent overheating. Once installed, verify the operation of the auxiliary contacts and the coil engagement before applying the full load.
What to consider before purchase
Verify that the 24V AC control voltage matches your existing control system.
Ensure the 18.5kW power rating is sufficient for your specific motor or load requirements.
Check the available space in your control cabinet for mounting.
Confirm that the auxiliary contact configuration meets your feedback or interlocking needs.
Usage recommendations
Regularly inspect the terminal connections for tightness and check for any signs of wear or debris accumulation to maintain optimal performance and safety.

## FAQ

### How much does the LSiS MC-40a Contactor 40A 3-Pole 18.5kW 24V AC cost, and is it available for purchase?

The price is 64.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 13 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 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

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