# Carlo Gavazzi RZ3A40D25 Three-Phase Solid State Relay 24-440V AC 25A 4-32V DC

**URL:** https://aio.lv/en/product--carlo-gavazzi-rz3a40d25--12469004
**Data updated:** 2026-05-18 09:28 (EEST)
**Category:** Control Systems
**Manufacturer:** carlo gavazzi
**Manufacturer code:** RZ3A40D25
**EAN:** 5350035402887
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 260.99 €
**Prices and availability valid until:** 2026-08-01 23:59
**Price without VAT (21%):** 215.69 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--carlo-gavazzi-rz3a40d25--12469004

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Pickup points | 24.07.2026 | 1.89 EUR |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

The Carlo Gavazzi RZ3A40D25 is a high-performance three-phase solid state relay designed for industrial switching applications. It operates with a load voltage range of 24-440V AC and a rated current of 25A, controlled by a 4-32V DC input signal. This compact relay provides reliable, silent, and maintenance-free switching for heating, lighting, and motor control systems, ensuring long operational life and efficient performance in demanding electrical environments.

## Long description

The Carlo Gavazzi RZ3A40D25 is a high-performance three-phase solid state relay engineered for demanding industrial switching applications. This device provides a robust solution for controlling electrical loads with precision and reliability. By utilizing semiconductor technology, it eliminates the mechanical wear associated with traditional contactors, offering a silent and maintenance-free operation that is essential for modern automated systems.
Advantages
The primary benefit of this solid state relay is its exceptional durability and long operational lifespan, which significantly reduces downtime and maintenance costs in industrial environments. Its compact design allows for efficient space utilization within control cabinets, while the high-speed switching capability ensures precise control over heating, lighting, and motor systems. Furthermore, the device offers excellent electrical isolation between the input and output circuits, enhancing the safety and stability of the entire electrical installation.
Suitable for
Industrial heating element control
Lighting system management
Three-phase motor starting and control
Process automation equipment
HVAC system components
When it may not be suitable
This relay is not designed for applications requiring high-frequency switching beyond its thermal capacity without adequate cooling measures. It is also not suitable for environments where the load current consistently exceeds the rated 25A limit or where the voltage requirements fall outside the specified 24-440V AC range.
Key specifications
Load voltage range: 24-440V AC
Rated current: 25A
Control input voltage: 4-32V DC
Switching type: Three-phase
Technology: Solid state
How to use
Installation should be performed by qualified personnel in accordance with local electrical regulations. The relay should be mounted on a suitable heat sink to ensure proper thermal dissipation, as solid state relays generate heat during operation. Connect the three-phase load to the output terminals and the DC control signal to the input terminals, ensuring correct polarity. Verify that all connections are secure and that the ambient temperature remains within the recommended operating limits to maintain optimal performance.
What to consider before purchase
Ensure the load current does not exceed 25A
Verify that the control signal source provides 4-32V DC
Confirm that a compatible heat sink is available for thermal management
Check that the application voltage is within the 24-440V AC range
Usage recommendations
For optimal longevity and performance, always use an appropriately sized heat sink and ensure adequate ventilation within the control panel to prevent overheating.

## FAQ

### How much does the Carlo Gavazzi RZ3A40D25 Three-Phase Solid State Relay cost, and is it available for purchase?

The price is 260.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 21.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Carlo Gavazzi RZ3A40D25 Three-Phase Solid State Relay be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 carlo gavazzi 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 carlo gavazzi 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/12469004/68771678_large.webp