# Siemens 3KD0442-2LG20-3 4-Pole Switch Disconnector, 80A, 750V/690V

**URL:** https://aio.lv/en/product--siemens-3kd0442-2lg20-3--12455820
**Data updated:** 2026-05-18 09:40 (EEST)
**Category:** Power Sockets
**Manufacturer:** Siemens
**Manufacturer code:** 3KD0442-2LG20-3
**EAN:** 4001869586687
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 123.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 102.47 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3kd0442-2lg20-3--12455820

## 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 3KD0442-2LG20-3 is a 4-pole switch disconnector designed for reliable power distribution and circuit isolation. It features a rated current of 80 A and supports input voltages up to 750 V DC or 690 V AC. With a power dissipation of 14.8 W and an IP10 protection rating, this grey-colored device is certified according to IEC 81346-2 Q standards, ensuring robust performance in industrial electrical systems.

## Long description

The Siemens 3KD0442-2LG20-3 is a high-performance 4-pole switch disconnector engineered for secure power distribution and reliable circuit isolation in industrial environments. This device is designed to handle a rated current of 80 A and supports operational voltages up to 750 V DC or 690 V AC, making it a versatile component for demanding electrical systems. With a power dissipation of 14.8 W and a robust construction, it ensures consistent performance while maintaining safety standards in accordance with IEC 81346-2 Q requirements.
Advantages
This switch disconnector offers exceptional reliability through its sturdy design and precise engineering. The inclusion of a direct operating mechanism allows for intuitive and immediate control, while the box terminal configuration simplifies the connection process for installers. Its compact dimensions and standardized mounting capabilities ensure that it integrates seamlessly into existing control panels and distribution boards, providing a dependable solution for managing electrical loads effectively.
Suitable for
Industrial power distribution systems
Circuit isolation for maintenance and safety
Control panel installations
Electrical infrastructure requiring 4-pole switching
This device may not be suitable for outdoor environments or areas exposed to moisture, dust, or debris, as it carries an IP10 protection rating. It is intended for installation within protected enclosures and should not be used in locations where environmental sealing is required.
Key specifications
Rated current: 80 A
Number of poles: 4
Maximum voltage: 750 V DC / 690 V AC
Power dissipation: 14.8 W
Protection rating: IP10
Dimensions: 96 mm width, 95 mm depth, 110 mm height
Terminal type: Box terminal
Operating mechanism: Direct front center
How to use
The switch disconnector is designed for professional installation within an electrical cabinet or distribution board. Ensure that the power supply is disconnected before beginning the installation process. Mount the unit securely using the provided mounting points, ensuring that the front operating mechanism is accessible for manual switching. Connect the electrical conductors to the box terminals, ensuring that all connections are tightened to the specified torque to prevent overheating. Once installed, the device can be used to manually isolate circuits by operating the front-mounted handle.
What to consider before purchase
Verify that the 80 A current rating meets your specific circuit requirements.
Ensure the installation environment is dry and protected, given the IP10 rating.
Check the available space in your enclosure against the device dimensions of 96 x 95 x 110 mm.
Confirm that a 4-pole configuration is necessary for your specific application.
Usage recommendations: Always adhere to local electrical codes and safety regulations during installation. Regular inspections of the terminal connections are recommended to ensure long-term operational integrity and to prevent potential electrical faults.

## Specifications

| Feature | Value |
|---|---|
| Storage temperature (T-T) | -25 - 55 |
| Pollution degree | 3 |
| Power dissipation | 14.8 W |
| Short-time withstand current | 3500 |
| Compliance certificates | UKCA, EAC, CE, CCC |

### Packaging data

| Feature | Value |
|---|---|
| Package depth | 129 mm |
| Package height | 98 mm |
| Package width | 120 mm |

### Design

| Feature | Value |
|---|---|
| Certification | IEC 81346-2 Q |
| Product colour | Grey |
| International Protection (IP) code | IP10 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.475 kg |
| Height | 110 mm |
| Width | 96 mm |
| Depth | 95 mm |

### Power

| Feature | Value |
|---|---|
| Input voltage | 750 / 690 |
| Rated current | 80 A |

### Features

| Feature | Value |
|---|---|
| Operating temperature (T-T) | -5 - 40 |
| Number of poles | 4 |

### Logistics data

| Feature | Value |
|---|---|
| Country of origin | China |

## FAQ

### How much does the Siemens 3KD0442-2LG20-3 4-Pole Switch Disconnector cost, and is it available for purchase?

The price is 123.99 € (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 3KD0442-2LG20-3 4-Pole Switch Disconnector 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

### 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.

### Where can I download the instructions for Siemens 3KD0442-2LG20-3 4-Pole Switch Disconnector?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/12455820/68775590_large.webp