# LS MC-12b 3-Pole Contactor 12A 5.5kW 24V AC with 1NO 1NC Auxiliary Contacts

**URL:** https://aio.lv/en/product--ls-mc-12b-24vac-1a1b--12445310
**Data updated:** 2026-05-18 02:53 (EEST)
**Category:** Control Systems
**Manufacturer:** LS
**Manufacturer code:** MC-12b 24VAC 1a1b
**EAN:** 8809512815285
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 21.99 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 18.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ls-mc-12b-24vac-1a1b--12445310

## 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 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The LS MC-12b is a high-performance 3-pole industrial contactor designed for reliable electrical circuit control. It features a 12A rated current, 5.5kW power capacity, and a 24V AC coil voltage. 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 automation systems, ensuring efficient performance and durability in demanding industrial environments.

## Long description

The LS MC-12b is a robust 3-pole industrial contactor engineered for precise and reliable electrical circuit control. Designed to handle demanding industrial applications, this contactor provides a rated current of 12A and a power capacity of 5.5kW, operating with a 24V AC coil voltage. It comes equipped with integrated auxiliary contacts, specifically 1 normally open (NO) and 1 normally closed (NC) contact, which facilitate seamless integration into complex control and automation systems.
Advantages
This contactor stands out due to its high operational reliability and compact design, which allows for efficient space utilization within electrical cabinets. The inclusion of auxiliary contacts provides added flexibility for feedback and interlocking circuits, enhancing the safety and functionality of the overall system. Its durable construction ensures long-term performance even in environments where frequent switching is required, making it a dependable choice for industrial automation and motor control tasks.
Suitable for
Motor starting and control applications
Industrial automation systems
Power switching in electrical panels
Control circuits requiring feedback via auxiliary contacts
When it may not be suitable
This device is specifically designed for AC control circuits and will not function correctly if connected to a DC power source for the coil. Additionally, it is not intended for high-voltage power distribution applications exceeding its rated capacity or for environments with extreme moisture or corrosive gases without appropriate protective enclosure.
Key specifications
Number of poles: 3
Rated current: 12A
Power capacity: 5.5kW
Coil voltage: 24V AC
Auxiliary contacts: 1 NO and 1 NC
How to use
The contactor should be mounted on a standard DIN rail or via screw mounting within a suitable electrical enclosure. Ensure that the power supply matches the 24V AC coil voltage requirement before making connections. The main power lines are connected to the primary terminals, while the control signals are wired to the coil terminals. The auxiliary contacts can be wired into the control logic to provide status monitoring or safety interlocking as needed.
What to consider before purchase
Verify that the 24V AC coil voltage is compatible with your control system.
Ensure the 5.5kW power rating is sufficient for the intended motor or load.
Check the available space in your electrical cabinet for mounting.
Confirm that the 1 NO and 1 NC auxiliary contact configuration meets your circuit requirements.
Usage recommendations
Always ensure that the electrical power is disconnected before performing any installation or maintenance work on the contactor. Regularly inspect the terminal connections to ensure they remain tight and free from oxidation to maintain optimal electrical conductivity.

## FAQ

### How much does the LS MC-12b 3-Pole Contactor 12A 24V AC cost, and is it available for purchase?

The price is 21.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 54 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

https://aio.lv/img/cache/product/12445310/68748530_large.webp