# Disconnector switch ENSTO SZ400.41 — overhead pole-mounted 3+N 400 A safety isolator

**URL:** https://aio.lv/en/product--ensto-sz40041--12397489
**Data updated:** 2026-04-27 22:30 (EEST)
**Category:** Power Sockets
**Manufacturer:** ENSTO
**Manufacturer code:** SZ400.41
**EAN:** 6438100328702
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 895.99 €
**Prices and availability valid until:** 2026-08-08 23:59
**Price without VAT (21%):** 740.49 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ensto-sz40041--12397489

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.89 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

ENSTO SZ400.41 is a pole-mounted disconnector switch designed for overhead distribution networks. Configured as 3+N and rated for 400 A, this safety isolator provides reliable live-line separation for maintenance and fault isolation. Suitable for outdoor pole installation in medium-voltage distribution systems where a robust mechanical switching device with clear visible isolation is required.

## Long description

ENSTO SZ400.41 is a pole-mounted disconnector switch designed for overhead distribution networks. Configured as a 3+N safety isolator with a rated current of 400 A, the device provides a visible break for live-line separation and access control during maintenance and fault servicing. The robust mechanical construction and outdoor-rated materials make this unit suitable for installation on distribution poles where clear and reliable isolation is required.
Advantages
The disconnector offers a simple mechanical operation that enables secure visible isolation of conductors in overhead lines. Its 3+N configuration supports separation of three phases and a neutral conductor, facilitating standard medium-voltage distribution arrangements. Built for outdoor use, the switch combines corrosion-resistant components and a design that withstands typical environmental conditions encountered on poles, reducing the need for frequent replacement or adjustment.
Suitable for (tasks / use cases)
 Visible isolation and sectionalising of overhead medium-voltage lines
 Pole-mounted installations on distribution networks
 Maintenance access control and safety isolation for field crews
 Fault isolation to enable repair work without energised conductors in the work area
When it may not be suitable
This disconnector is a mechanical, non-load-breaking isolation device intended for visible separation and safety isolation; it is not designed for frequent switching under load or arc interruption duties. It may not be suitable where on-load switching, automatic sectionalising with rapid reclosing, or integrated switching with protection relays is required.
Key specifications
 Configuration: 3 phases + neutral (3+N)
 Rated continuous current: 400 A
 Mounting: pole-mounted for overhead lines
 Application environment: outdoor distribution networks
 Function: visible mechanical disconnector for safety isolation
How to use
Install the ENSTO SZ400.41 on a suitable distribution pole following local utility practices and mounting clearances. Use qualified electrical personnel to secure mechanical fittings and to connect phase and neutral conductors to the designated terminals. Operate the disconnector mechanically to open or close the visible break; ensure the device is mechanically locked and tagged according to safety procedures before performing maintenance. Verify the absence of voltage with appropriate test equipment after opening the switch and before any work on the conductors.
What to consider before purchase
 Compatibility with your overhead line configuration and conductor arrangement
 Required mounting hardware and pole strength to support the device
 Local regulations for outdoor isolation devices and required clearances
 Whether on-load switching capability is needed or if a mechanical visible isolator is sufficient
Usage recommendations
Ensure installation and commissioning are carried out by trained technicians and that the device is used only for visible mechanical isolation. Regular visual inspections and periodic mechanical checks of fastenings and insulating components will help maintain reliable operation in outdoor conditions.

## FAQ

### How much does the ENSTO SZ400.41 disconnector switch 3+N 400 A cost, and is it available for purchase?

The price is 895.99 € (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 28.07.2026 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 SZ400.41 disconnector switch 3+N 400 A 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/12397489/68680890_large.webp