# Siemens 3KD0642-2LG20-3 4-Pole Switch-Disconnector 125A 690V

**URL:** https://aio.lv/en/product--siemens-3kd0642-2lg20-3--12453364
**Data updated:** 2026-05-18 02:42 (EEST)
**Category:** Power Sockets
**Manufacturer:** Siemens
**Manufacturer code:** 3KD0642-2LG20-3
**EAN:** 4001869586724
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 196.99 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 162.80 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3kd0642-2lg20-3--12453364

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

The Siemens 3KD0642-2LG20-3 is a 4-pole switch-disconnector designed for reliable power circuit isolation. Rated for 125A and 690V, this device features a direct grey handle for manual operation and is suitable for central front mounting. It utilizes frame-type terminals, ensuring secure electrical connections for industrial and commercial power distribution systems requiring safe maintenance and operational switching.

## Long description

The Siemens 3KD0642-2LG20-3 is a robust 4-pole switch-disconnector engineered for the reliable isolation of power circuits in demanding industrial and commercial environments. Rated for 125A and 690V, this device serves as a critical component for main power switching, emergency-off functions, or maintenance isolation. It features a compact size 02 design and comes as a complete unit equipped with a direct grey operating handle for manual control, specifically designed for central front mounting.
Advantages
This switch-disconnector provides exceptional operator protection and ensures high system availability across various infrastructure and building applications. Its construction utilizes secure frame-type terminals that facilitate reliable electrical connections, minimizing the risk of loose contacts. The device is built to withstand rigorous operational requirements, offering a versatile solution for power distribution systems that demand both safety and consistent performance during routine maintenance or emergency shutdowns.
Suitable for
Industrial power distribution systems
Commercial building electrical infrastructure
Emergency-off switching applications
Maintenance and repair isolation tasks
Wind and solar power plant installations
When it may not be suitable
This device is not intended for applications requiring remote motorized operation, as it is designed specifically for manual control via a direct handle. It may also be unsuitable for environments exceeding its rated voltage of 690V or current capacity of 125A.
Key specifications
Number of poles: 4
Rated operational current: 125A
Rated operational voltage: 690V
Mounting type: Central front mounting
Operating mechanism: Direct grey handle
Terminal type: Frame-type terminals
Size: 02
How to use
The switch-disconnector is designed for central front mounting within an electrical enclosure. Installation should be performed by qualified personnel in accordance with local electrical regulations. Once mounted, the device is operated manually using the integrated grey handle. To isolate the circuit, rotate the handle to the designated off position, ensuring the power supply is disconnected before performing any maintenance or repair work on the downstream equipment.
What to consider before purchase
Verify that the 125A current rating matches your circuit requirements.
Ensure the 4-pole configuration is appropriate for your specific power distribution layout.
Confirm that the central front mounting style is compatible with your existing panel or enclosure design.
Check that the operating environment is within the specified voltage limits.
Usage recommendations
Always ensure the device is fully de-energized before attempting any maintenance on the connected electrical system. Regularly inspect the frame-type terminals for tightness to maintain optimal electrical conductivity and safety.

## FAQ

### How much does the Siemens 3KD0642-2LG20-3 4-Pole Switch-Disconnector 125A cost, and is it available for purchase?

The price is 196.99 € (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 16.07.2026 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 Siemens 3KD0642-2LG20-3 4-Pole Switch-Disconnector 125A 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 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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