# Ferrule Rittal AS 4051.538, copper + PP insulated, 3.5 mm diameter, 10 mm length, pack of 4000

**URL:** https://aio.lv/en/product--rittal-4051538--12401111
**Data updated:** 2026-04-29 13:49 (EEST)
**Category:** Tool kits and accessories
**Manufacturer:** Rittal
**Manufacturer code:** 4051538
**EAN:** 4028177937864
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 154.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 127.68 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--rittal-4051538--12401111

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.99 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Rittal AS 4051.538 is an insulated ferrule made of copper with polypropylene (PP) insulation. It has a 3.5 mm outer diameter and a 10 mm length, supplied in a pack of 4000 pieces. Designed for reliable wire termination and crimping in electrical installations, control cabinets and panel wiring where secure conductor connection and corrosion resistance are required.

## Long description

Rittal AS 4051.538 insulated ferrules are copper conductor end sleeves with polypropylene (PP) insulation, sized for secure terminations in electrical installations. With a 3.5 mm outer diameter and 10 mm total length, these ferrules are supplied in a bulk pack of 4000 pieces and are intended for reliable crimp connections on stranded conductors in control cabinets, panels and machine wiring. The ferrules combine a plated copper barrel for good conductivity and corrosion resistance with a molded PP collar that ensures a consistent insulation stop and easier insertion into terminals.
Advantages
These ferrules provide a consistent, professional end termination that helps prevent strand fraying, improves contact reliability and eases crimping operations. The copper barrel offers low electrical resistance and compatibility with most common crimp tools, while the PP insulated collar provides electrical isolation at the termination point and a tactile stopper for repeatable insertion depth. Supplied in a large pack, they are suited for production and maintenance tasks where a steady supply is required.
Suitable for
 Crimping stranded copper conductors for control cabinets and distribution panels
 Terminal block and screw terminal connections where a neat, secure termination is needed
 Electrical installation and maintenance in industrial and commercial environments
 Applications requiring corrosion-resistant copper contacts with insulated collars
When it may not be suitable
These ferrules are intended for use with stranded copper conductors of a matching cross-section; they are not suitable for use on solid conductors or conductors made of materials other than copper without verifying compatibility. They are sized for terminations that accept a 3.5 mm diameter ferrule; using them in undersized or oversized terminals may compromise the connection.
Key specifications
 Material: copper barrel with polypropylene (PP) insulated collar
 Outer diameter: 3.5 mm
 Length: 10 mm
 Pack quantity: 4000 pieces
 Typical use: crimp termination of stranded conductors
How to use
Strip the conductor to the appropriate length so that the bare strands fully enter the copper barrel without exposing excess bare wire beyond the insulated collar. Insert the stranded conductor into the ferrule until the insulation collar meets the conductor insulation. Use a suitable ferrule crimping tool sized for this ferrule to perform a complete, square crimp on the barrel; follow the crimper manufacturer's settings for the conductor cross-section. After crimping, visually inspect the joint to confirm the strands are compacted and the collar sits flush with the conductor insulation before placing into the terminal.
What to consider before purchase
 Verify conductor cross-section compatibility and terminal acceptance for a 3.5 mm ferrule diameter
 Confirm material suitability for the application environment (copper barrel, PP insulation)
 Ensure you have a compatible crimping tool and die set for the ferrule size
 Assess whether the bulk pack quantity (4000 pieces) matches your usage needs
Usage recommendations
Use these ferrules with a matched crimping tool and correct conductor strip length for consistent connections; store in a dry area to maintain the integrity of the insulation collars and avoid exposure to aggressive chemicals that could degrade polypropylene.

## Specifications

| Feature | Value |
|---|---|
| Material | Copper, Polypropylene (PP) |
| Product colour | Yellow |
| Length | 10 mm |
| Diameter | 3.5 mm |
| Quantity per pack | 4000 pc(s) |

## FAQ

### How much does the Ferrule Rittal AS 4051.538 3.5mm 10mm 4000pcs cost, and is it available for purchase?

The price is 154.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 12 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 15.07.2026 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 Ferrule Rittal AS 4051.538 3.5mm 10mm 4000pcs?

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/12401111/68689666_large.webp