# Rittal AS 4051.548 insulated ferrules 0.5 mm² (AWG 20) copper core, polypropylene collar, length 8 mm, pack of 4000

**URL:** https://aio.lv/en/product--rittal-4051548--10476431
**Data updated:** 2026-04-28 18:47 (EEST)
**Category:** Miscellaneous repair tools
**Manufacturer:** Rittal
**Manufacturer code:** 4051548
**EAN:** 4028177937963
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 72.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 60.32 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--rittal-4051548--10476431

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

Rittal AS 4051.548 are insulated ferrules for terminating 0.5 mm² (AWG 20) conductors. Each ferrule features a copper crimp barrel and a polypropylene (PP) insulating collar, with an 8 mm length. Supplied in a pack of 4000, these ferrules provide reliable, gas-tight wire connections for control panels, terminal blocks and general electrical installations.

## Long description

Rittal AS 4051.548 ferrules with plastic collar are insulated wire end sleeves designed to provide a secure and reliable termination for stranded conductors. Made from copper with a polypropylene (PP) plastic collar, these white ferrules help ensure consistent contact, prevent strand fraying and improve connection quality in control cabinets, distribution blocks and terminal strips.
Advantages
The copper tube provides good electrical conductivity and mechanical strength while the PP collar offers insulation and ease of insertion into terminals. The compact 8 mm length and 2.9 mm diameter make these ferrules suitable for confined terminal spaces. Supplied in packs of 4000 pieces, they are convenient for larger wiring jobs and repetitive assembly tasks.
Suitable for
Insulating and terminating stranded wires 0.5 mm² (AWG 20)
Electrical panels, control cabinets and terminal blocks
Industrial assembly lines and electrical maintenance work
When it may not be suitable
These ferrules are specified for conductors with a cross-section of 0.5 mm² (AWG 20); they are not suitable for larger or significantly smaller conductor sizes. They are intended for crimp termination and require a properly sized crimping tool for reliable results.
Key specifications
Colour: White (plastic collar)
Conductor cross-section: 0.5 mm² (AWG 20)
Material: Copper tube with polypropylene (PP) collar
Length: 8 mm
Outer diameter: 2.9 mm
Quantity per pack: 4000 pieces
How to use
Strip the conductor to the appropriate length, insert the stranded wire into the copper tube until the insulation meets the plastic collar, and crimp firmly with a crimping tool sized for 0.5 mm² ferrules. After crimping, check the mechanical and electrical integrity of the connection before energising the circuit.
What to consider before purchase
Confirm conductor cross-section is 0.5 mm² (AWG 20)
Ensure you have a compatible crimping tool for insulated ferrules
Verify terminal dimensions to match the 8 mm length and 2.9 mm diameter
Usage recommendations
Use the ferrules with the correct crimping tool and inspect crimps visually and mechanically; store packs in a dry environment to prevent contamination of the contact surfaces.

## Specifications

| Feature | Value |
|---|---|
| Material | Copper, Polypropylene (PP) |
| Diameter | 2.9 mm |

### Other features

| Feature | Value |
|---|---|
| Length | 8 mm |

### Logistics data

| Feature | Value |
|---|---|
| Quantity per pack | 4000 pc(s) |

### Features

| Feature | Value |
|---|---|
| Product colour | White |

## FAQ

### How much does the Rittal AS 4051.548 ferrules 0.5 mm² AWG 20 cost, and is it available for purchase?

The price is 72.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 17 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 23.07.2026 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Rittal AS 4051.548 ferrules 0.5 mm² AWG 20?

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

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