# Siemens LZS:RT4B4L24 Plug-in Relay, 24V DC, 2CO Contacts with LED Module

**URL:** https://aio.lv/en/product--siemens-lzsrt4b4l24--3434432
**Data updated:** 2026-05-18 02:39 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** LZS:RT4B4L24
**EAN:** 4011209674653
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 24.99 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 20.65 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-lzsrt4b4l24--3434432

## 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 Siemens LZS:RT4B4L24 is a complete plug-in relay assembly designed for industrial control and automation applications. It operates on a 24V DC coil voltage and features two changeover (2CO) contacts. The unit includes an integrated LED status indicator for easy monitoring. This reliable relay is ideal for switching electrical loads in control cabinets and industrial systems, ensuring efficient signal processing and circuit management.

## Long description

The Siemens LZS:RT4B4L24 is a high-quality plug-in relay assembly engineered for demanding industrial control and automation environments. This complete unit is designed for seamless integration into electrical control cabinets, providing reliable switching of electrical loads. Operating on a 24V DC coil voltage, the relay features two changeover (2CO) contacts, allowing for versatile circuit management and efficient signal processing in various automated systems.
Advantages
This relay assembly offers exceptional reliability and durability, which are essential for maintaining consistent performance in industrial settings. The inclusion of an integrated LED status indicator provides immediate visual feedback, allowing maintenance personnel to quickly verify the operational state of the relay without the need for additional testing equipment. Its plug-in design significantly simplifies installation and replacement procedures, reducing downtime during maintenance or system upgrades. The robust construction ensures long-term stability and precise switching operations under standard industrial conditions.
Suitable for
Industrial automation and control systems
Electrical control cabinet installations
Signal processing and circuit switching
Building management systems
Automated machinery and equipment
When it may not be suitable
This relay is designed for specific 24V DC control applications and may not be suitable for high-voltage AC power switching or circuits requiring higher current ratings beyond its specified capacity. It is not intended for use in environments with extreme moisture, corrosive gases, or excessive vibration unless housed in an appropriate protective enclosure.
Key specifications
Coil voltage: 24V DC
Contact configuration: 2 changeover (2CO) contacts
Integrated LED status indicator
Plug-in mounting design
Industrial-grade construction
How to use
To install the relay, ensure the power supply is disconnected to prevent electrical hazards. Insert the relay into the compatible base socket, ensuring that the pins are correctly aligned with the terminal slots. Once firmly seated, connect the control wiring to the base terminals according to your circuit diagram. After installation, restore power and observe the LED indicator to confirm that the relay is receiving the control signal and functioning as expected.
What to consider before purchase
Verify that your control system provides a 24V DC signal
Ensure the base socket is compatible with the relay pin configuration
Check that the load requirements do not exceed the relay contact ratings
Confirm space availability within the control cabinet for the assembly
Usage recommendations
Regularly inspect the relay and its base for signs of wear or loose connections during scheduled maintenance intervals to ensure continued operational safety and reliability.

## FAQ

### How much does the Siemens LZS:RT4B4L24 Plug-in Relay 24V DC cost, and is it available for purchase?

The price is 24.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 29 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 Siemens 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 Siemens 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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