# Siemens 3RQ4070-2SG30 Semiconductor Coupling Relay, 110-230V AC/DC, 1NO, Push-In

**URL:** https://aio.lv/en/product--siemens-3rq4070-2sg30--12447693
**Data updated:** 2026-05-18 02:47 (EEST)
**Category:** Printer & Copier Parts
**Manufacturer:** Siemens
**Manufacturer code:** 3RQ4070-2SG30
**EAN:** 4047621143446
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 33.49 €
**Prices and availability valid until:** 2026-08-06 23:59
**Price without VAT (21%):** 27.68 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rq4070-2sg30--12447693

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.07.2026 | free |
| Pickup points | 29.07.2026 | 1.89 EUR |
| Courier delivery to door | 29.07.2026 | 4.99 EUR |

## Summary description

The Siemens 3RQ4070-2SG30 is a semiconductor coupling relay designed for reliable signal transmission in industrial automation. It operates on a voltage range of 110-230V AC/DC and features a 1NO contact configuration. Equipped with convenient Push-In terminals, this 6.2mm wide relay supports a thermal current of 5A, ensuring efficient performance in control circuits and electrical systems.

## Long description

The Siemens 3RQ4070-2SG30 is a high-performance semiconductor coupling relay engineered for precise signal transmission within industrial automation environments. This input optocoupler is designed to bridge the gap between control systems and field devices, ensuring reliable operation across a wide voltage range of 110-230V AC/DC. With its compact 6.2mm width, it is an ideal solution for space-constrained control cabinets, while the integrated Push-In spring-loaded terminals facilitate rapid and secure wiring without the need for specialized tools.
Advantages
The primary benefit of this semiconductor relay is its robust design which ensures long-term reliability and high switching frequency compared to traditional electromechanical relays. The Push-In connection technology significantly reduces installation time and maintenance efforts, as it provides a vibration-resistant contact that remains stable over time. Its slim profile allows for high-density mounting, maximizing the utility of available DIN rail space in complex electrical panels. Furthermore, the wide input voltage range provides flexibility for various global power standards, simplifying inventory management and system design.
Suitable for
Industrial automation control systems
Signal isolation between controllers and actuators
Space-limited electrical cabinets
High-frequency switching applications
Interface circuits in manufacturing machinery
When it may not be suitable
This relay is intended for signal-level switching and may not be suitable for applications requiring the direct control of high-power inductive loads or motors that exceed the specified thermal current limit. It is also not designed for environments with extreme moisture or corrosive gases unless housed in an appropriate protective enclosure.
Key specifications
Input voltage: 110-230V AC/DC
Output configuration: 1 NO contact
Connection type: Push-In (spring-loaded)
Width: 6.2 mm
Thermal current: 5 A
How to use
Installation involves mounting the relay onto a standard DIN rail within a control cabinet. Once secured, connect the control signal wires to the input terminals and the load circuit to the output terminals using the Push-In mechanism. Ensure that the wires are stripped to the appropriate length before insertion to guarantee a solid electrical connection. Always verify that the input voltage matches the specified range before energizing the circuit to prevent damage to the internal semiconductor components.
What to consider before purchase
Verify that the control voltage matches the 110-230V AC/DC range
Ensure the 5A thermal current is sufficient for your specific load requirements
Check available space on the DIN rail to accommodate the 6.2mm width
Confirm that the 1 NO contact configuration meets your circuit logic needs
Usage recommendations
For optimal performance and longevity, ensure that the relay is installed in an environment with adequate ventilation to prevent overheating. Regularly inspect the Push-In connections during scheduled maintenance to ensure they remain free from debris and maintain proper contact pressure.

## FAQ

### How much does the Siemens 3RQ4070-2SG30 Semiconductor Coupling Relay cost, and is it available for purchase?

The price is 33.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 7 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 24.07.2026 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. All transactions are 100% secure and encrypted.

### 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 Siemens 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 Siemens 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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