# Legrand 042790 Isolation Transformer 310VA 230-400V/115-230V

**URL:** https://aio.lv/en/product--legrand-042790--12449217
**Data updated:** 2026-05-18 02:52 (EEST)
**Category:** Power Supplies (PSU)
**Manufacturer:** Legrand
**Manufacturer code:** 042790
**EAN:** 3245060427900
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 256.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 212.39 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--legrand-042790--12449217

## 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 Legrand 042790 is a high-quality isolation transformer designed for safe electrical power distribution. It features a power rating of 310VA with input voltages of 230-400V and output voltages of 115-230V. This professional-grade component is essential for galvanic isolation in industrial and commercial electrical systems, ensuring reliable performance and enhanced safety for connected equipment.

## Long description

The Legrand 042790 is a professional-grade isolation transformer engineered to provide reliable galvanic isolation in various electrical installations. With a power rating of 310VA, this component is designed to safely step down or adapt voltages, supporting input ranges of 230-400V and output ranges of 115-230V. It serves as a critical safety element in industrial and commercial power distribution systems, effectively decoupling circuits to protect sensitive equipment from electrical noise and potential surges.
Advantages
This isolation transformer offers robust construction and high operational reliability, making it a dependable choice for demanding electrical environments. By providing galvanic isolation, it significantly enhances safety by preventing direct electrical contact between the primary and secondary circuits. Its versatile voltage configuration allows for flexible integration into diverse power setups, ensuring that connected devices receive stable and isolated power, which helps in reducing interference and improving the overall longevity of electrical components.
Suitable for
Industrial control panels
Commercial electrical distribution systems
Sensitive electronic equipment requiring galvanic isolation
Voltage adaptation in professional electrical setups
This transformer may not be suitable for high-power applications exceeding its 310VA rating. It is also not intended for use in environments where extreme environmental conditions, such as high humidity or corrosive atmospheres, exceed the manufacturer's specified protection class.
Key specifications
Power rating: 310VA
Input voltage: 230-400V
Output voltage: 115-230V
Function: Galvanic isolation
Installation should be performed by a qualified professional in accordance with local electrical regulations. The transformer must be mounted securely within an appropriate enclosure that provides adequate ventilation to prevent overheating during operation. Ensure that all input and output connections are tightened to the specified torque and that the wiring matches the required voltage configuration for your specific application.
What to consider before purchase
Verify that the 310VA power capacity is sufficient for your connected load.
Ensure the input and output voltage requirements match your existing electrical infrastructure.
Confirm that the installation space allows for proper heat dissipation.
Usage recommendations: Regularly inspect the transformer for signs of wear or overheating and ensure that the surrounding area remains free of dust and debris to maintain optimal cooling efficiency.

## Specifications

### Logistics data

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the Legrand 042790 Isolation Transformer cost, and is it available for purchase?

The price is 256.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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, Installment. All transactions are 100% secure and encrypted.

### Can Legrand 042790 Isolation Transformer 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 Legrand 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 Legrand 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/12449217/68777931_large.webp