# Siemens 5TT4217-1 Installation Relay 16A 2CO 230V/400V AC 110V DC

**URL:** https://aio.lv/en/product--siemens-5tt42171--3434483
**Data updated:** 2026-05-18 02:39 (EEST)
**Category:** Power Sockets
**Manufacturer:** Siemens
**Manufacturer code:** 5TT42171
**EAN:** 4001869312958
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 52.99 €
**Prices and availability valid until:** 2026-08-06 23:59
**Price without VAT (21%):** 43.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-5tt42171--3434483

## 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 5TT4217-1 is a high-quality installation relay designed for reliable electrical switching in industrial and residential applications. It features a 16A current rating and a 2CO contact configuration. The device supports a control voltage of 230V/400V AC and 110V DC, ensuring versatile integration into various electrical distribution systems. This robust component is engineered for durability and precise performance in demanding environments.

## Long description

The Siemens 5TT4217-1 installation relay is a professional-grade switching component engineered for high reliability in both industrial and residential electrical distribution systems. This device is designed to manage electrical loads efficiently, providing a robust solution for automated control and circuit switching. With its compact design and high-quality construction, it ensures consistent performance and long-term operational stability in various electrical installations.
Advantages
The primary advantage of this installation relay is its versatile compatibility with different control voltages, including 230V/400V AC and 110V DC, which allows for seamless integration into diverse electrical architectures. The 2CO contact configuration provides flexibility in circuit design, enabling the control of two independent circuits simultaneously. Its 16A current rating makes it suitable for handling significant electrical loads while maintaining precise switching accuracy. The device is built to withstand demanding environments, ensuring durability and reduced maintenance requirements over its service life.
Suitable for
Residential lighting control systems
Industrial automation and process control
Heating and ventilation system management
Electrical distribution boards and switchgear
When it may not be suitable
This relay is not intended for high-frequency switching applications that exceed its mechanical or electrical endurance ratings. It is also not suitable for environments where the ambient temperature or humidity levels fall outside the manufacturer's specified operating range.
Key specifications
Rated current: 16A
Contact configuration: 2CO (two changeover contacts)
Control voltage: 230V/400V AC and 110V DC
Mounting type: DIN rail
How to use
The installation relay should be mounted onto a standard DIN rail within an electrical enclosure. Ensure that the power supply is disconnected before beginning the installation. Connect the control circuit wires to the designated coil terminals and the load circuit wires to the corresponding contact terminals according to the wiring diagram. Verify all connections for tightness and proper insulation before restoring power to the system.
What to consider before purchase
Verify that the control voltage of your system matches the specifications of the relay.
Ensure the load current does not exceed the 16A rating.
Check available space on the DIN rail within your distribution board.
Confirm that the 2CO contact configuration meets your specific switching requirements.
Usage recommendations
Regularly inspect the relay for signs of wear or loose connections during routine maintenance of your electrical system. Ensure that the operating environment remains free from excessive dust and moisture to prolong the lifespan of the device.

## Specifications

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.148 kg |

### Design

| Feature | Value |
|---|---|
| Product colour | Multicolour |

## FAQ

### How much does the Siemens 5TT4217-1 Installation Relay cost, and is it available for purchase?

The price is 52.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/3434483/61303901_large.webp