# LS AU-4M 2a2b Front Auxiliary Contact Block 2NO+2NC

**URL:** https://aio.lv/en/product--ls-au-4m-2a2b--12458465
**Data updated:** 2026-05-18 09:35 (EEST)
**Category:** Computer Component Accessories
**Manufacturer:** LS
**Manufacturer code:** AU-4M 2a2b
**EAN:** 8809587680689
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 18.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 15.28 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ls-au-4m-2a2b--12458465

## 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 LS AU-4M 2a2b is a front-mounted auxiliary contact block designed for integration with compatible LS electrical switchgear. Featuring a configuration of 2 normally open (NO) and 2 normally closed (NC) contacts, this module provides reliable signal feedback for control and monitoring circuits. It is an essential component for expanding the switching capabilities of contactors in industrial and commercial electrical installations.

## Long description

The LS AU-4M 2a2b is a high-quality front-mounted auxiliary contact block engineered for seamless integration with compatible LS electrical switchgear. This module is designed to provide precise signal feedback for various control and monitoring applications, ensuring reliable performance in demanding industrial and commercial environments. By adding this block to your existing contactor setup, you can effectively expand your switching capabilities and enhance the overall functionality of your electrical distribution systems.
Advantages
This auxiliary contact block offers a robust design that ensures long-term operational stability and consistent electrical connectivity. Its front-mounting configuration allows for quick and easy installation without the need for extensive modifications to the existing switchgear assembly. The inclusion of both normally open and normally closed contacts provides versatile options for complex control logic, making it a flexible solution for diverse automation requirements.
Suitable for
Industrial automation control panels
Motor starter circuits
Building management and monitoring systems
Electrical distribution and switching installations
When it may not be suitable
This component is specifically designed for use with compatible LS contactors and may not be physically or electrically compatible with switchgear from other manufacturers. It is not intended for high-power switching applications and should only be used for signal and control circuit purposes.
Key specifications
Contact configuration: 2 Normally Open (NO) and 2 Normally Closed (NC)
Mounting type: Front-mounted
Compatibility: LS electrical switchgear
Function: Signal feedback and control circuit expansion
How to use
To install the LS AU-4M 2a2b, ensure that the main power supply to the contactor is completely disconnected. Align the auxiliary block with the front mounting interface of the compatible LS contactor and press firmly until it clicks into place. Once secured, connect the control wires to the appropriate terminals according to your circuit diagram. Verify all connections are tight before restoring power to the system.
What to consider before purchase
Verify compatibility with your specific LS contactor model
Ensure the contact configuration meets your control circuit requirements
Confirm that the installation space allows for front-mounted accessories
Usage recommendations
Always perform a functional test of the control circuit after installation to ensure that the auxiliary contacts are triggering correctly in response to the contactor state. Regularly inspect the terminal connections for signs of wear or loosening during routine maintenance.

## FAQ

### How much does the LS AU-4M 2a2b Front Auxiliary Contact Block cost, and is it available for purchase?

The price is 18.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 62 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 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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