# Rittal AS 4051.541 insulated ferrules 0.75 mm² (AWG 18) copper core, polypropylene collar, length 8 mm, diameter 3.4 mm, pack of 4000

**URL:** https://aio.lv/en/product--rittal-4051541--12401114
**Data updated:** 2026-04-29 13:49 (EEST)
**Category:** Electronics Accessories
**Manufacturer:** Rittal
**Manufacturer code:** 4051541
**EAN:** 4028177937895
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 84.49 €
**Prices and availability valid until:** 2026-08-01 23:59
**Price without VAT (21%):** 69.83 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--rittal-4051541--12401114

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 31.07.2026 | free |
| Pickup points | 05.08.2026 | 1.89 EUR |
| Courier delivery to door | 05.08.2026 | 4.99 EUR |

## Summary description

Rittal AS 4051.541 insulated ferrules for electrical terminations. Designed for 0.75 mm² (AWG 18) conductors, each ferrule has a copper crimp barrel and a polypropylene (PP) insulated collar. Dimensions: 8 mm length, 3.4 mm diameter. Supplied in a pack of 4000 pieces for reliable wire-to-terminal connections in control panels, switchgear and general wiring.

## Long description

Rittal AS 4051.541 insulated ferrules are designed for consistent and reliable wire terminations of 0.75 mm² (AWG 18) conductors. Each ferrule combines a copper crimp barrel with a polypropylene (PP) insulated collar to ensure good electrical contact, mechanical stability and insulation at the connection point. The ferrules measure 8 mm in length and 3.4 mm in collar diameter and are supplied in a pack of 4000 for high-volume installation and repetitive wiring tasks in control panels, terminal blocks and other electrical assemblies.
Advantages
These insulated ferrules provide a defined crimp area that improves conductor insertion and compression, reducing stray strands and improving contact reliability. The copper core ensures low electrical resistance and corrosion resistance at the crimped joint, while the polypropylene collar protects against short circuits and assists with insulation in confined terminal spaces. A large pack quantity supports continuous work without frequent reordering and helps maintain consistent installation standards across multiple terminations.
Suitable for
 Terminating single-core copper conductors of 0.75 mm² (AWG 18)
 Control panels, switchgear and distribution blocks
 Industrial wiring, machine cabling and factory automation
 Electrical maintenance, repair and repetitive assembly tasks
When it may not be suitable
These ferrules are intended specifically for solid or stranded copper conductors with a cross-section of 0.75 mm² (AWG 18). They are not appropriate for significantly larger or smaller conductor sizes, aluminium conductors, or where specialized high-temperature or chemical-resistant insulation is required. Use of improper crimp tools or incorrect crimping technique can compromise connection quality.
Key specifications
 Conductor cross-section: 0.75 mm² (AWG 18)
 Barrel material: copper
 Insulation collar material: polypropylene (PP)
 Overall length: 8 mm
 Collar outer diameter: 3.4 mm
 Pack quantity: 4000 pieces
How to use
Strip the conductor to the recommended length so that the bare conductor fits fully into the copper barrel. Insert the conductor into the ferrule until the insulation meets the polypropylene collar. Use a suitably sized ferrule crimping tool to apply a single, clean crimp at the barrel, ensuring the strands are compressed evenly. After crimping, check that the ferrule is securely attached and that the insulated collar sits flush against the conductor insulation before inserting into the terminal block or screw connection.
What to consider before purchase
 Verify conductor cross-section compatibility (0.75 mm² / AWG 18).
 Confirm material preferences for barrel (copper) and collar (polypropylene) suit the application environment.
 Ensure you have the correct ferrule crimping tool for this size to achieve reliable crimps.
 Assess whether the bulk pack quantity (4000) matches your storage and consumption needs.
Usage recommendations
Use a dedicated crimping tool sized for 0.75 mm² ferrules and perform a pull test on a sample termination after crimping. Store the ferrules in a dry environment to avoid contamination and ensure consistent installation quality by training personnel on correct stripping and crimping technique.

## Specifications

| Feature | Value |
|---|---|
| Material | Copper, Polypropylene (PP) |
| Product colour | White |
| Length | 8 mm |
| Diameter | 3.4 mm |
| Quantity per pack | 4000 pc(s) |

## FAQ

### How much does the Rittal AS 4051.541 insulated ferrules 0.75 mm² cost, and is it available for purchase?

The price is 84.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 20 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 31.07.2026 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 4051.541 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/12401114/68689663_large.webp