# Ferrule Rittal AS 4051.605 — insulated copper ferrules 2.5 mm² (10 mm length), pack of 3000, blue

**URL:** https://aio.lv/en/product--rittal-4051605--12401143
**Data updated:** 2026-04-29 13:49 (EEST)
**Category:** Tool kits and accessories
**Manufacturer:** Rittal
**Manufacturer code:** 4051605
**EAN:** 4028177938649
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 108.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 90.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--rittal-4051605--12401143

## 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 4051.605 insulated ferrules (also known as bootlace ferrules) are copper conductors with polypropylene insulation, designed for terminating 2.5 mm² (AWG 14) stranded wires. Each blue ferrule is 10 mm long with a 4.2 mm outer diameter. Supplied in a pack of 3000, they ensure reliable crimped connections for control cabinets, terminal blocks and industrial wiring.

## Long description

Rittal AS 4051.605 insulated copper ferrules are designed to provide secure, low-resistance terminations for 2.5 mm² (AWG 14) stranded conductors. Each ferrule features a tin-plated copper tube and a polypropylene insulating collar in blue, with a tube length of 10 mm and an outer collar diameter of 4.2 mm. Supplied in a pack of 3000, these ferrules are intended for professional electrical installation tasks such as control cabinets, terminal blocks and industrial wiring where reproducible crimped connections are required.
Advantages
These insulated ferrules offer consistent mechanical and electrical joints by enclosing stranded conductors in a rigid metal sleeve, which reduces fraying and ensures reliable contact in screw or spring-type terminals. The polypropylene collar provides electrical insulation and strain relief at the entry point, improving handling during insertion and preventing conductor damage. The tin plating enhances corrosion resistance and long-term conductivity in industrial environments.
Suitable for
 Terminating 2.5 mm² (AWG 14) stranded copper wires
 Wiring in control cabinets and distribution panels
 Connections to terminal blocks, relays and contactors
 Industrial automation and machine wiring where repeated assembly is expected
When it may not be suitable
These ferrules are sized specifically for 2.5 mm² (AWG 14) stranded conductors; they will not fit smaller or larger cross-sections properly and may compromise connection quality if used incorrectly. They are intended for copper conductors and are not suitable for direct termination of solid conductors or aluminum conductors without appropriate preparation or suitable alternatives.
Key specifications
 Conductor cross-section: 2.5 mm² (AWG 14)
 Tube material: tin-plated copper
 Insulation material: polypropylene collar (blue)
 Tube length: 10 mm
 Outer collar diameter: 4.2 mm
 Pack quantity: 3000 pieces
How to use
Strip the stranded conductor to the appropriate length so the bare strands fully enter the copper tube. Insert the conductor into the ferrule until the insulation collar sits flush with the wire insulation. Use a calibrated crimping tool or ferrule crimper sized for 2.5 mm² ferrules to make a single, firm crimp ensuring the sleeve is uniformly compressed around the strands. After crimping, check that the ferrule is secure and that no strands are protruding before inserting into the terminal and tightening the terminal screw to the manufacturer's torque specification.
What to consider before purchase
 Verify conductor type and cross-section: suitable for stranded copper 2.5 mm² (AWG 14)
 Confirm required tube length (10 mm) and collar diameter (4.2 mm) are compatible with your terminals
 Ensure availability of a compatible crimping tool for insulated ferrules
 Determine pack size (3000 pcs) matches your usage to avoid excess or shortage
Usage recommendations
Use with a dedicated ferrule crimping tool matched to 2.5 mm² insulated ferrules for consistent results. Store the pack in a dry, dust-free environment and handle ferrules with clean hands or gloves to avoid contamination of contact surfaces. For repeatable and safe electrical connections, follow applicable wiring standards and terminal manufacturer torque values.

## Specifications

| Feature | Value |
|---|---|
| Material | Copper, Polypropylene (PP) |
| Product colour | Blue |
| Length | 10 mm |
| Diameter | 4.2 mm |
| Quantity per pack | 3000 pc(s) |

## FAQ

### How much does the Rittal AS 4051.605 insulated ferrules 2.5 mm² cost, and is it available for purchase?

The price is 108.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 24 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 Rittal AS 4051.605 insulated ferrules 2.5 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/12401143/68689634_large.webp