# Carlo Gavazzi RM1A40D50 Single-Phase Solid State Relay, 50A, 42-440V AC Output, 4-32V DC Control

**URL:** https://aio.lv/en/product--carlo-gavazzi-rm1a40d50--12464874
**Data updated:** 2026-05-18 09:27 (EEST)
**Category:** Control Systems
**Manufacturer:** carlo gavazzi
**Manufacturer code:** RM1A40D50
**EAN:** 5350035320808
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 76.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 63.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--carlo-gavazzi-rm1a40d50--12464874

## 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 Carlo Gavazzi RM1A40D50 is a high-performance single-phase solid state relay designed for industrial switching applications. It features a 50A current rating with an output voltage range of 42-440V AC and a 4-32V DC control input. This reliable component ensures efficient power control and long-lasting operation in various automation systems, providing a robust solution for non-contact switching of electrical loads.

## Long description

The Carlo Gavazzi RM1A40D50 is a high-performance single-phase solid state relay engineered for demanding industrial switching applications. This component provides a reliable, non-contact method for controlling electrical loads, ensuring consistent performance and longevity in automated environments. By utilizing advanced semiconductor technology, it eliminates the mechanical wear associated with traditional electromechanical relays, making it an ideal choice for systems requiring frequent switching operations.
Advantages
The primary benefit of this solid state relay is its ability to handle high-current loads up to 50A with exceptional precision. Its robust design ensures minimal electromagnetic interference and silent operation, which is critical for sensitive industrial equipment. Furthermore, the wide control voltage range allows for seamless integration into various control circuits, while the high-voltage output capability provides versatility across different power distribution setups. The device is built to withstand harsh industrial conditions, offering a durable solution that reduces maintenance requirements and downtime.
Suitable for
Industrial heating control systems
Packaging and labeling machinery
Plastic injection molding equipment
Lighting control applications
Motor control and solenoid switching
When it may not be suitable
This relay is not intended for applications requiring galvanic isolation beyond the specifications of the device or for environments where the ambient temperature exceeds the rated thermal limits without adequate cooling. It is also not suitable for switching DC loads, as it is specifically designed for AC output applications.
Key specifications
Rated operational current: 50A
Operational voltage range: 42-440V AC
Control input voltage: 4-32V DC
Switching type: Zero-crossing
Mounting style: Panel mount
How to use
To install the relay, mount it securely onto a suitable heatsink to ensure proper thermal dissipation, as solid state relays generate heat during operation. Connect the control signal wires to the input terminals, observing the correct polarity for the 4-32V DC input. Connect the load and the AC power supply to the output terminals. Ensure that all connections are tightened to the manufacturer's torque specifications to prevent overheating or poor electrical contact. Always verify that the load current does not exceed the 50A limit to prevent damage to the internal components.
What to consider before purchase
Ensure the load current does not exceed 50A under normal operating conditions.
Verify that the control signal source is compatible with the 4-32V DC input range.
Confirm that a compatible heatsink is available to manage thermal output.
Check that the application involves an AC load, as this device is not designed for DC switching.
Usage recommendations
For optimal performance and to extend the lifespan of the relay, always use an appropriately sized heatsink and ensure adequate ventilation in the control cabinet. Regularly inspect electrical connections for tightness and signs of oxidation.

## FAQ

### How much does the Carlo Gavazzi RM1A40D50 Single-Phase Solid State Relay cost, and is it available for purchase?

The price is 76.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 19 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, Installment. All transactions are 100% secure and encrypted.

### Can Carlo Gavazzi RM1A40D50 Single-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

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