# Relpol RM1A48D50 Single-Phase Solid State Relay 50A 480V 4.5-32V DC

**URL:** https://aio.lv/en/product--relpol-rm1a48d50--10671909
**Data updated:** 2026-05-18 02:46 (EEST)
**Category:** Control Systems
**Manufacturer:** Relpol
**Manufacturer code:** RM1A48D50
**EAN:** 5350035320860
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 111.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 92.55 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--relpol-rm1a48d50--10671909

## 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 Relpol RM1A48D50 is a high-performance single-phase solid state relay designed for reliable switching in industrial applications. It features a 50A load current capacity, a maximum switching voltage of 480V AC, and a control voltage range of 4.5-32V DC. This relay provides silent, spark-free operation and long service life, making it ideal for heating control, motor starting, and automation systems requiring frequent switching.

## Long description

The Relpol RM1A48D50 is a high-performance single-phase solid state relay engineered for precise and reliable switching in demanding industrial environments. By utilizing semiconductor technology, this device eliminates the mechanical wear associated with traditional electromechanical relays, ensuring a significantly longer service life and consistent performance. It is designed to handle substantial electrical loads while maintaining a compact footprint, making it an essential component for modern control systems.
Advantages
This solid state relay offers silent operation, which is critical for noise-sensitive environments, and provides spark-free switching to enhance safety and reduce electromagnetic interference. Its robust design allows for frequent switching cycles without the risk of contact degradation or welding. The wide control voltage range ensures compatibility with various automation controllers, while the high load capacity provides the flexibility needed for diverse industrial applications.
Suitable for
Heating element control systems
Industrial motor starting applications
Lighting control circuits
Automation and process control systems
Temperature regulation equipment
When it may not be suitable
This relay is not intended for switching DC loads, as it is specifically designed for AC applications. Additionally, it may not be suitable for high-current applications where adequate heat sinking cannot be provided, as solid state relays generate heat during operation that must be dissipated to prevent failure.
Key specifications
Load current capacity: 50A
Maximum switching voltage: 480V AC
Control voltage range: 4.5-32V DC
Switching type: Zero-cross or random (depending on application)
Mounting: Panel mount
How to use
To install the relay, mount it securely onto a suitable heat sink to ensure proper thermal management, as heat dissipation is vital for the longevity of the device. Connect the control signal wires to the input terminals, ensuring the polarity matches the specified DC voltage range. Connect the AC load in series with the output terminals of the relay. Always verify that the load current and voltage do not exceed the maximum ratings specified for the device before powering the system.
What to consider before purchase
Verify that your load type is AC, as this device does not support DC load switching.
Ensure that a compatible heat sink is available for your installation to prevent overheating.
Check that your control signal voltage falls within the 4.5-32V DC range.
Confirm the maximum current draw of your application does not exceed 50A.
Usage recommendations
Always use a thermal conductive paste between the relay base and the heat sink to maximize heat transfer efficiency and ensure reliable long-term operation.

## FAQ

### How much does the Relpol RM1A48D50 Single-Phase Solid State Relay cost, and is it available for purchase?

The price is 111.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 17 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, Installment. All transactions are 100% secure and encrypted.

### Can Relpol RM1A48D50 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

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