# Relpol RM1A48D75 Single-Phase Solid State Relay 75A 480V 4.5-32V DC

**URL:** https://aio.lv/en/product--relpol-rm1a48d75--12466442
**Data updated:** 2026-05-18 09:30 (EEST)
**Category:** Control Systems
**Manufacturer:** Relpol
**Manufacturer code:** RM1A48D75
**EAN:** 5350035320877
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 135.49 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 111.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--relpol-rm1a48d75--12466442

## 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 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The Relpol RM1A48D75 is a high-performance single-phase solid state relay designed for reliable switching in industrial applications. It features a rated current of 75A and a maximum switching voltage of 480V AC. The control input operates on a 4.5-32V DC signal. This relay provides silent, spark-free operation, ensuring long service life and high switching frequency for heating, lighting, and motor control systems.

## Long description

The Relpol RM1A48D75 is a high-performance single-phase solid state relay engineered for precise and reliable switching in demanding industrial environments. This device facilitates efficient control of electrical loads up to 75A with a maximum switching voltage of 480V AC, utilizing a versatile 4.5-32V DC control input signal. By employing advanced semiconductor technology, it eliminates mechanical wear and contact bouncing, resulting in silent operation and an extended operational lifespan compared to traditional electromechanical relays.
Advantages
The primary benefit of this solid state relay is its ability to handle high-frequency switching tasks without the degradation associated with moving parts. Its spark-free operation makes it an ideal choice for environments where safety and reliability are paramount. The wide control voltage range allows for seamless integration into various automation systems, while the robust design ensures consistent performance under continuous load conditions. Furthermore, the compact form factor simplifies installation in crowded control panels.
Suitable for
Industrial heating systems and temperature control
Lighting control applications
Motor control and soft-start circuits
Automation systems requiring high switching frequency
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 requires appropriate heat sinking to prevent overheating during operation at high current levels, making it unsuitable for applications where space for thermal management is strictly unavailable.
Key specifications
Rated current: 75A
Maximum switching voltage: 480V AC
Control input voltage: 4.5-32V DC
Switching type: Single-phase
Operation: Silent and spark-free
How to use
Installation involves mounting the relay onto a suitable heat sink to ensure effective thermal dissipation. Connect the AC load to the output terminals and the DC control signal to the input terminals, ensuring correct polarity. Once connected, the relay will activate the load whenever the control signal is applied within the specified voltage range. Regular inspection of the connections and the heat sink surface is recommended to maintain optimal performance.
What to consider before purchase
Ensure the load current does not exceed the 75A rating
Verify that the control signal source provides a stable 4.5-32V DC output
Confirm that a compatible heat sink is available for the installation
Check that the application involves AC voltage switching
Usage recommendations
Always use a properly sized heat sink to prevent thermal damage to the relay. Ensure that the load is protected by appropriate fuses or circuit breakers to prevent damage from short circuits or overcurrent conditions.

## FAQ

### How much does the Relpol RM1A48D75 Single-Phase Solid State Relay cost, and is it available for purchase?

The price is 135.49 € (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 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 Relpol RM1A48D75 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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