# Relpol RM1A40A50 Single-Phase Solid State Relay 50A 400V 24-265V AC

**URL:** https://aio.lv/en/product--relpol-rm1a40a50--12456088
**Data updated:** 2026-05-18 09:43 (EEST)
**Category:** Control Systems
**Manufacturer:** Relpol
**Manufacturer code:** RM1A40A50
**EAN:** 5350035320464
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 94.99 €
**Prices and availability valid until:** 2026-08-10 23:59
**Price without VAT (21%):** 78.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--relpol-rm1a40a50--12456088

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

The Relpol RM1A40A50 is a high-performance single-phase solid state relay designed for reliable switching in industrial applications. It features a 50A current rating and a 400V operational voltage with a 24-265V AC control range. This relay provides silent, spark-free operation and long service life, making it an ideal solution for heating control, motor starting, and various automation systems requiring frequent switching.

## Long description

The Relpol RM1A40A50 is a high-performance single-phase solid state relay engineered for precise and reliable switching in demanding industrial environments. With a robust 50A current rating and a 400V operational voltage, this device ensures consistent performance in critical electrical circuits. It utilizes a 24-265V AC control range, allowing for versatile integration into various automation systems where durability and efficiency are paramount.
Advantages
This solid state relay offers significant operational benefits, primarily through its silent and spark-free switching mechanism. Unlike traditional electromechanical relays, the absence of moving parts eliminates mechanical wear, resulting in an exceptionally long service life and reduced maintenance requirements. The design ensures high resistance to vibrations and shocks, providing stable operation even in harsh industrial conditions. Furthermore, the rapid switching capability allows for precise control of electrical loads, enhancing the overall efficiency of the connected equipment.
Suitable for
Heating element control systems
Motor starting applications
Industrial automation and process control
Lighting control systems
Temperature regulation equipment
When it may not be suitable
This relay is not intended for use in DC load switching applications, as it is specifically designed for AC circuits. Additionally, it may not be suitable for environments where extreme ambient temperatures exceed the manufacturer's specified operating limits without adequate heat sinking.
Key specifications
Rated load current: 50A
Operational voltage: 400V AC
Control voltage range: 24-265V AC
Switching type: Zero-crossing
Mounting: Panel mount
How to use
Installation should be performed by qualified personnel in accordance with local electrical regulations. The relay must be mounted on a suitable heat sink to dissipate heat generated during operation, as thermal management is critical for maintaining the rated current capacity. Connect the control signal wires to the input terminals and the load circuit to the output terminals, ensuring that all connections are secure and properly insulated. Verify that the load current and voltage do not exceed the specified ratings before energizing the circuit.
What to consider before purchase
Ensure the load current does not exceed 50A under continuous operation.
Verify that the control signal voltage is within the 24-265V AC range.
Confirm that a compatible heat sink is available for the installation.
Check the environmental conditions to ensure they fall within the operating temperature range.
Usage recommendations
Always use an appropriately sized heat sink to prevent overheating and ensure the longevity of the solid state relay. Regularly inspect electrical connections for tightness and ensure the surrounding area is free from excessive dust or moisture.

## FAQ

### How much does the Relpol RM1A40A50 Single-Phase Solid State Relay cost, and is it available for purchase?

The price is 94.99 € (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 30.07.2026 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 Relpol RM1A40A50 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 Relpol 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 Relpol 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/12456088/68758321_large.webp