# Siemens 3RT20161FB42 Power Contactor, 24V DC, 3 NO, 1 NC, Screw Terminals

**URL:** https://aio.lv/en/product--siemens-3rt20161fb42--1779616
**Data updated:** 2026-05-18 02:40 (EEST)
**Category:** Miscellaneous repair tools
**Manufacturer:** Siemens
**Manufacturer code:** 3RT20161FB42
**EAN:** 4011209843608
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 47.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 39.66 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rt20161fb42--1779616

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

The Siemens 3RT20161FB42 is a high-performance power contactor designed for reliable switching of electrical loads. It features a 24V DC control coil, 3 normally open (NO) main contacts, and 1 normally closed (NC) auxiliary contact. Equipped with secure screw terminals, this S00 size contactor is ideal for industrial automation, motor control, and power distribution systems requiring consistent performance and durability.

## Long description

The Siemens 3RT20161FB42 is a high-performance power contactor engineered for the reliable switching of electrical loads in demanding industrial environments. This compact S00-sized device is designed to provide consistent operation and long-term durability, making it a fundamental component for modern electrical control systems. With its robust construction and precise engineering, it ensures efficient power distribution and motor control performance.
Advantages
This contactor offers exceptional reliability due to its high-quality manufacturing standards, ensuring stable performance even under frequent switching cycles. The inclusion of a 24V DC control coil allows for seamless integration into standard industrial control circuits. Its compact S00 design saves valuable space within control cabinets, while the secure screw terminals provide a vibration-resistant connection, reducing maintenance requirements and ensuring electrical safety throughout the lifespan of the equipment.
Suitable for
Industrial automation systems
Motor control applications
Power distribution panels
HVAC control circuits
Lighting control systems
This contactor may not be suitable for applications requiring high-voltage AC control signals, as it is specifically designed for a 24V DC coil. It is also not intended for use in environments exceeding its specified current or thermal ratings, nor is it suitable for direct outdoor installation without a protective, weather-rated enclosure.
Key specifications
Control coil voltage: 24V DC
Main contacts: 3 normally open (NO)
Auxiliary contacts: 1 normally closed (NC)
Size: S00
Connection type: Screw terminals
To use the Siemens 3RT20161FB42, mount the device onto a standard DIN rail or a flat surface within a control panel. Connect the 24V DC control supply to the coil terminals and wire the main power circuit through the three normally open contacts. Ensure that all screw terminals are tightened to the manufacturer's recommended torque specifications to prevent loose connections and overheating. Verify that the auxiliary contact is correctly integrated into your feedback or interlocking logic before energizing the system.
What to consider before purchase
Verify that your control circuit provides a stable 24V DC supply.
Ensure the S00 size fits your existing panel layout.
Confirm that the contact configuration (3 NO, 1 NC) meets your specific circuit requirements.
Check that the current rating is compatible with your intended electrical load.
Usage recommendations
Always disconnect the main power supply before performing any wiring or maintenance on the contactor to prevent electrical shock. Regularly inspect the screw terminals for tightness and check for signs of wear or debris accumulation to maintain optimal electrical conductivity.

## FAQ

### How much does the Siemens 3RT20161FB42 Power Contactor cost, and is it available for purchase?

The price is 47.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 03.07.2026 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

https://aio.lv/img/cache/product/1779616/52347358_large.webp