# Ensto SZ400.3 Pole-Mounted Fuse Disconnector

**URL:** https://aio.lv/en/product--ensto-sz4003--12473961
**Data updated:** 2026-05-18 09:35 (EEST)
**Category:** Power Sockets
**Manufacturer:** ENSTO
**Manufacturer code:** SZ400.3
**EAN:** 6438100328689
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 724.49 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 598.75 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ensto-sz4003--12473961

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

The Ensto SZ400.3 is a professional pole-mounted fuse disconnector designed for reliable electrical circuit protection and isolation in overhead power line networks. This robust device ensures safe maintenance and operation of distribution systems, providing efficient current interruption capabilities. It is engineered for durability and long-term performance in outdoor environmental conditions, making it an essential component for utility infrastructure and electrical grid management.

## Long description

The Ensto SZ400.3 pole-mounted fuse disconnector is a high-quality electrical component engineered for the protection and isolation of overhead power line networks. This device provides a reliable solution for managing electrical circuits in distribution systems, ensuring that current can be safely interrupted during maintenance or in the event of a fault. Built to withstand demanding outdoor environments, it serves as a critical element for utility infrastructure, offering consistent performance and durability for grid operators.
Advantages
This fuse disconnector is designed with a focus on operational safety and long-term reliability in outdoor settings. Its robust construction ensures resistance to environmental factors, which minimizes the need for frequent maintenance and extends the service life of the equipment. The design facilitates efficient current interruption, providing a secure way to isolate sections of the power grid, which is essential for the safety of personnel performing routine inspections or repairs on overhead lines.
Suitable for
Overhead power line distribution networks
Electrical grid maintenance and isolation tasks
Utility infrastructure protection
Outdoor electrical circuit management
When it may not be suitable
This device is specifically designed for pole-mounted overhead line applications and is not intended for indoor use or within enclosed electrical panels. It is also not suitable for low-voltage residential wiring systems or applications requiring high-speed automated switching beyond standard fuse-based protection.
Key specifications
Type: Pole-mounted fuse disconnector
Application: Overhead power lines
Function: Circuit protection and isolation
Design: Weather-resistant for outdoor installation
How to use
The installation of the Ensto SZ400.3 must be performed by qualified electrical personnel in accordance with local utility standards and safety regulations. The device is mounted onto the utility pole using appropriate hardware. Once installed, the fuse links are inserted into the disconnector housing. To isolate a circuit, the operator uses a hot stick or similar insulated tool to manually open the disconnector, thereby interrupting the electrical flow safely.
What to consider before purchase
Compatibility with existing overhead line voltage and current ratings
Local utility requirements for pole-mounted equipment
Availability of appropriate insulated tools for manual operation
Environmental conditions at the installation site
Usage recommendations
Always verify that the circuit is de-energized before performing any maintenance on the disconnector or replacing fuse links. Ensure that all installation procedures follow the manufacturer's technical guidelines and local electrical safety codes.

## FAQ

### How much does the Ensto SZ400.3 Pole-Mounted Fuse Disconnector cost, and is it available for purchase?

The price is 724.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 13.07.2026 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, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can Ensto SZ400.3 Pole-Mounted Fuse 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 ENSTO 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 ENSTO 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/12473961/68793009_large.webp