# Siemens 3LD2003-0TK51 Main Switch with Rotary Operating Mechanism

**URL:** https://aio.lv/en/product--siemens-3ld2003-0tk51--3272749
**Data updated:** 2026-05-18 02:54 (EEST)
**Category:** Power Sockets
**Manufacturer:** Siemens
**Manufacturer code:** 3LD2003-0TK51
**EAN:** 4011209519121
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 43.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 36.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3ld2003-0tk51--3272749

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The Siemens 3LD2003-0TK51 is a high-quality main switch designed for safe and reliable electrical circuit disconnection. Featuring a robust rotary operating mechanism, this device is engineered for industrial and commercial applications where manual control of power supply is required. It ensures efficient performance and durability in various electrical installations.

## Long description

The Siemens 3LD2003-0TK51 is a professional-grade main switch equipped with a reliable rotary operating mechanism, engineered to provide secure electrical circuit disconnection. This device serves as a critical component in industrial and commercial power distribution systems, allowing for the manual interruption of power supply to machinery or electrical panels. Built to meet rigorous safety standards, it ensures consistent performance and long-term durability in demanding environments.
Advantages
This main switch offers exceptional reliability and safety for electrical installations. Its robust rotary mechanism provides clear tactile feedback, ensuring that the operator can easily confirm the switch position. The design is optimized for high-frequency use, maintaining structural integrity and electrical contact quality over extended operational lifecycles. Furthermore, its compact footprint allows for efficient integration into control cabinets and distribution boards without compromising on performance or safety features.
Suitable for
Industrial machinery power control
Commercial electrical distribution panels
Maintenance and repair safety isolation
Emergency power shutdown systems
When it may not be suitable
This device is not intended for use in high-voltage transmission lines or environments exceeding its specified electrical ratings. It is also not suitable for outdoor installations unless housed within an appropriately rated protective enclosure that prevents moisture and dust ingress.
Key specifications
Type: Main switch with rotary operating mechanism
Operational reliability: High-durability mechanical design
Application: Industrial and commercial electrical circuits
Function: Manual power supply disconnection
How to use
The switch is designed for panel mounting within an electrical enclosure. Installation should be performed by a qualified electrician in accordance with local electrical codes. To operate, rotate the handle to the designated 'ON' or 'OFF' position. The mechanism is designed to lock securely, providing a clear visual indicator of the circuit status.
What to consider before purchase
Verify that the electrical ratings match your specific circuit requirements
Ensure the mounting space is compatible with the switch dimensions
Confirm that the environmental conditions meet the manufacturer's specifications
Usage recommendations
Regularly inspect the rotary mechanism for smooth operation and ensure that all terminal connections remain tight to prevent overheating during standard operation.

## Specifications

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.206 kg |

### Design

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

## FAQ

### How much does the Siemens 3LD2003-0TK51 Main Switch cost, and is it available for purchase?

The price is 43.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 14 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 06.07.2026 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/3272749/58312616_large.webp