# Protective Earthing Clamp with Cone and Cover ENSTO SEW20.3S for Al conductors 35–157 mm²

**URL:** https://aio.lv/en/product--ensto-sew203s--12110206
**Data updated:** 2026-03-20 10:01 (EET)
**Category:** Tool kits and accessories
**Manufacturer:** ENSTO
**Manufacturer code:** SEW20.3S
**EAN:** 6438100305581
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

ENSTO SEW20.3S is a protective earthing (anti-arc) clamp designed for aluminium conductors with cross-sections from 35 to 157 mm². It features a conical contact (rożek) and a protective cover for secure mechanical and electrical connection during grounding and earthing operations. Intended for use in power distribution, line maintenance and temporary or permanent earthing applications.

## Long description

ENSTO SEW20.3S is a protective earthing clamp designed for aluminium conductors with cross-sections from 35 to 157 mm². The clamp incorporates a conical contact and an insulated protective cover to ensure reliable mechanical grip and low-resistance electrical connection during grounding and earthing operations. The product is intended for use in power distribution networks, line maintenance and both temporary and permanent earthing tasks where a secure connection to aluminium conductors is required.
Advantages
The conical contact provides an increased contact surface and consistent pressure on aluminium conductors, reducing the risk of poor electrical contact and arcing. The integrated protective cover insulates the connection area against accidental touch and environmental contamination while allowing safe handling during installation and removal. The clamp is constructed to withstand the mechanical stresses of line work and to maintain stable electrical continuity under typical load and environmental conditions.
Suitable for
 Earthing and protective grounding of overhead aluminium conductors
 Temporary grounding during line maintenance and repair
 Permanent grounding connections in distribution networks using aluminium conductors
 Worksite safety procedures where a secure clamp-on protective earth is required
Key specifications
 Compatible conductor material: aluminium
 Conductor cross-section range: 35–157 mm²
 Contact type: conical contact for improved grip and electrical contact
 Protective feature: insulated cover for touch protection and contamination resistance
 Application environment: overhead lines and distribution network outdoor use
How to use
Select a suitable conductor section within the specified cross-section range and ensure the conductor is de-energized and verified as safe before any work. Open the clamp, position the conical contact onto the aluminium conductor to achieve firm mechanical engagement, then close or secure the clamp according to manufacturer guidance so the contact and cover fully enclose the conductor. Verify electrical continuity to the earthing system and confirm the protective cover is correctly positioned to prevent accidental contact. After completing grounding tasks, remove the clamp following the reverse procedure and inspect the clamp and cover for any wear or damage before storage or reuse.
Usage recommendations
Use only on aluminium conductors within the specified cross-section range and always follow applicable safety procedures, local regulations and the operator’s safety instructions. Periodically inspect the clamp and its insulating cover for mechanical wear, corrosion or contamination. Replace the clamp if any damage that could compromise electrical or mechanical performance is detected.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### 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

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