# Rittal AS 4051.537 insulated ferrules, copper core, polypropylene sleeve, 0.75 mm² (AWG 18), length 10 mm, pack 4000

**URL:** https://aio.lv/en/product--rittal-4051537--12401110
**Data updated:** 2026-04-29 13:49 (EEST)
**Category:** Tool kits and accessories
**Manufacturer:** Rittal
**Manufacturer code:** 4051537
**EAN:** 4028177937857
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 151.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 125.20 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--rittal-4051537--12401110

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Rittal AS 4051.537 insulated ferrules with a copper conductor and polypropylene (PP) sleeve. Designed for 0.75 mm² (AWG 18) conductors, these ferrules have a 10 mm length and come in a pack of 4000 pieces. They provide reliable wire termination, improved contact area and secure crimp connections for control cabinets, industrial wiring and electrical assemblies.

## Long description

Rittal AS 4051.537 insulated ferrules are crimp end sleeves with a copper conductor and a polypropylene (PP) insulating sleeve, designed for reliable terminations of 0.75 mm² (AWG 18) conductors. Each ferrule measures 10 mm in length and is supplied in a package of 4000 pieces, providing a consistent solution for improving contact area and securing crimped connections in control cabinets, industrial wiring and general electrical assemblies.
Advantages
These insulated ferrules combine a copper core for good conductivity with a polypropylene sleeve that protects against fraying and improves insulation at the termination point. The consistent 10 mm length and uniform internal bore simplify crimping quality and repeatability. Supplied in bulk (4000 pieces), they support efficient installation workflows and reduce handling time for repetitive wiring tasks.
Suitable for
 Termination of single-core stranded copper conductors sized 0.75 mm² (AWG 18)
 Control cabinets and distribution blocks where secure, repeatable crimps are required
 Industrial machinery wiring, automation panels and terminal strip connections
 Electrical assemblies and repair work that benefit from insulated ferrule ends to prevent stray strands
When it may not be suitable
These ferrules are specific to conductors of 0.75 mm² (AWG 18); they will not fit larger or smaller conductor cross-sections correctly and may result in poor electrical or mechanical connection if used outside their intended size range. They are intended for copper stranded conductors and are not designed for directly terminating solid conductors or non-copper materials without verifying compatibility.
Key specifications
 Conductor material: copper core for electrical conductivity
 Insulation sleeve: polypropylene (PP) collar
 Nominal conductor cross-section: 0.75 mm² (AWG 18)
 Length: 10 mm
 Pack quantity: 4000 pieces
 Application: insulated ferrule for crimp termination of single-core stranded wires
How to use
Strip the conductor to the recommended length so that the bare strands can be fully inserted into the ferrule barrel. Insert the stripped wire into the ferrule until the insulation sleeve meets the wire insulation. Use an appropriately sized ferrule crimping tool or ratchet crimper to compress the copper barrel evenly, producing a secure mechanical and electrical connection. After crimping, inspect the sleeve for damage and confirm that no strands are protruding. Insert the ferrule into the terminal or connector and tighten the terminal screw to the specified torque for the application.
What to consider before purchase
 Confirm conductor type and cross-section: suitable for stranded copper conductors of 0.75 mm² (AWG 18)
 Check required ferrule length and terminal depth to ensure compatibility with 10 mm ferrules
 Verify crimping tool compatibility for insulated ferrules with a 10 mm barrel and the specified conductor size
 Assess pack quantity needs — 4000 pieces are intended for larger installation or production use
Usage recommendations
For consistent results, use a calibrated crimping tool matched to insulated ferrules of this size and perform a pull test on sample crimps. Store the ferrules in a dry, dust-free environment and keep them in the original packaging until use to avoid contamination of the internal barrel.

## Specifications

| Feature | Value |
|---|---|
| Material | Copper, Polypropylene (PP) |
| Product colour | White |
| Length | 10 mm |
| Diameter | 3.4 mm |
| Quantity per pack | 4000 pc(s) |

## FAQ

### How much does the Rittal AS 4051.537 insulated ferrules 0.75 mm² cost, and is it available for purchase?

The price is 151.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 41 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 14.07.2026 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. 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 Rittal 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 Rittal 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

### Where can I download the instructions for Rittal AS 4051.537 insulated ferrules 0.75 mm²?

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/12401110/68689667_large.webp