# LSiS UA-4 2a2b Front Auxiliary Contact Block

**URL:** https://aio.lv/en/product--lsis-ua-4-2a2b--12445238
**Data updated:** 2026-05-18 02:49 (EEST)
**Category:** Computer Component Accessories
**Manufacturer:** LSiS
**Manufacturer code:** UA-4 2a2b
**EAN:** 8809587681136
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 9.91 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lsis-ua-4-2a2b--12445238

## 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 UA-4 2a2b is a front-mounted auxiliary contact block designed for integration with compatible contactors. It features a 2NO and 2NC configuration, providing reliable signal feedback for control and automation systems. This modular component is essential for expanding the switching capabilities of electrical circuits in industrial and commercial applications, ensuring precise monitoring and control of equipment status.

## Long description

The LSiS UA-4 2a2b is a high-quality front-mounted auxiliary contact block engineered for seamless integration with compatible LSiS contactors. This modular device is designed to provide reliable signal feedback within complex control and automation systems, ensuring that operators have accurate information regarding the operational status of their electrical equipment. By adding this block to a contactor, users can effectively expand the switching capabilities of their electrical circuits, facilitating more sophisticated control logic in both industrial and commercial environments.
Advantages
The primary benefit of the LSiS UA-4 2a2b is its robust design which ensures consistent performance and long-term reliability in demanding electrical installations. Its front-mounting configuration allows for quick and easy installation without the need for extensive modifications to the existing contactor setup. The inclusion of both normally open and normally closed contacts provides versatile signal routing options, making it an essential component for monitoring and safety interlock applications where precise status feedback is required.
Suitable for
Industrial automation control panels
Motor control centers
Electrical switching and distribution systems
Safety interlock circuits
Remote status monitoring applications
When it may not be suitable
This auxiliary contact block is specifically designed for use with compatible LSiS contactors and may not be compatible with contactors from other manufacturers or different product series. It is not intended for use in high-power switching applications where the current exceeds the rated capacity of the auxiliary contacts.
Key specifications
Configuration: 2 Normally Open (NO) and 2 Normally Closed (NC) contacts
Mounting type: Front-mounted
Compatibility: Designed for LSiS contactors
Function: Signal feedback and circuit expansion
How to use
To install the LSiS UA-4 2a2b, ensure that the main power supply to the contactor is completely disconnected to prevent electrical hazards. Align the auxiliary contact block with the front mounting interface of the compatible contactor and press firmly until it clicks into place. Once secured, connect the control wiring to the appropriate terminals according to your circuit diagram. Verify that all connections are tight and that the contactor operates smoothly before restoring power to the system.
What to consider before purchase
Verify compatibility with your specific contactor model
Ensure the contact configuration (2NO/2NC) meets your control logic requirements
Check available space in your control cabinet for front-mounted accessories
Usage recommendations
Always perform a functional test of the auxiliary contacts after installation to confirm that the signal feedback matches the contactor state before putting the equipment into full operation.

## FAQ

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

The price is 11.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 58 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/12445238/68748458_large.webp