# LS MC-18b 3-Pole Contactor 18A 7.5kW 24V AC with 1NO 1NC Auxiliary Contacts

**URL:** https://aio.lv/en/product--ls-mc-18b-24vac-1a1b--12447483
**Data updated:** 2026-05-18 02:43 (EEST)
**Category:** Control Systems
**Manufacturer:** LS
**Manufacturer code:** MC-18b 24VAC 1a1b
**EAN:** 8809512816664
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 24.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 20.24 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ls-mc-18b-24vac-1a1b--12447483

## 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 LS MC-18b is a high-performance 3-pole industrial contactor designed for reliable motor control and power switching applications. It features a rated current of 18A, a power rating of 7.5kW at 400V, and a 24V AC control coil. Equipped with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, this device ensures efficient integration into electrical control systems for automation and industrial machinery.

## Long description

The LS MC-18b is a robust 3-pole industrial contactor engineered for precise motor control and reliable power switching in demanding electrical environments. With a rated operational current of 18A and a power capacity of 7.5kW at 400V, this device provides consistent performance for various industrial automation tasks. It is equipped with a 24V AC control coil and includes integrated 1 normally open (NO) and 1 normally closed (NC) auxiliary contacts, facilitating seamless integration into complex control circuits.
Advantages
This contactor offers high operational reliability and durability, making it an essential component for industrial machinery. Its compact design allows for space-efficient installation in control panels, while the inclusion of auxiliary contacts provides flexibility for monitoring and interlocking functions. The device is built to withstand frequent switching operations, ensuring long-term service life in automated systems.
Suitable for
Motor control systems
Industrial automation machinery
Power distribution panels
HVAC control systems
Lighting control circuits
This contactor may not be suitable for applications requiring DC control voltages, as it is specifically designed for a 24V AC coil. It is also not intended for high-voltage power switching beyond its rated capacity or for use in environments with extreme moisture or corrosive gases without appropriate protective enclosures.
Key specifications
Number of poles: 3
Rated operational current: 18A
Power rating: 7.5kW at 400V
Control coil voltage: 24V AC
Auxiliary contacts: 1 NO and 1 NC
To install the LS MC-18b, mount the device securely onto a standard DIN rail or a flat surface within an electrical enclosure. Connect the main power lines to the primary terminals and wire the 24V AC control signal to the coil terminals. Ensure that all connections are tightened to the manufacturer's specified torque to prevent overheating. Verify that the auxiliary contacts are correctly wired for your specific interlocking or feedback requirements before energizing the system.
What to consider before purchase
Verify that your control circuit provides a 24V AC signal.
Ensure the motor load does not exceed the 7.5kW rating.
Check available space in your control cabinet for mounting.
Confirm the compatibility of auxiliary contacts with your control logic.
Ensure that the power supply is completely disconnected before performing any installation or maintenance on the contactor. Regularly inspect terminal connections for tightness and check for signs of wear or debris accumulation to maintain optimal performance.

## FAQ

### How much does the LS MC-18b 3-Pole Contactor 18A 24V AC cost, and is it available for purchase?

The price is 24.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 7 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 LS 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 LS 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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