# Enclosure Accessory Rittal AS 4055.780 metallic, round 21.5 mm matrix

**URL:** https://aio.lv/en/product--rittal-4055780--12401205
**Data updated:** 2026-04-29 13:49 (EEST)
**Category:** Furniture Accessories
**Manufacturer:** Rittal
**Manufacturer code:** 4055780
**EAN:** 4028177920675
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 96.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 79.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--rittal-4055780--12401205

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Rittal AS 4055.780 is a metallic enclosure accessory supplied as a round 21.5 mm matrix (matrize) for use in control cabinets and industrial housings. Designed for forming round openings or mounting components, it suits electrical panel fabrication, cable entry or fitting of controls and indicators. Lightweight and durable for workshop and field use.

## Long description

Rittal AS 4055.780 metallic, round 21.5 mm matrix is a purpose-built enclosure accessory for creating precise round openings in control cabinets, electrical panels and industrial housings. Supplied as a 21.5 mm round female die, it is intended to be used together with the corresponding male die to form clean, repeatable holes suitable for cable entry, mounting controls or installing indicators. The component is manufactured in metal for durability and workshop or field use.
Advantages
The metallic construction ensures long service life and resistance to deformation during repeated punching operations. As a dedicated 21.5 mm round matrize, it delivers consistent hole diameter and edge quality when paired with the matching male die, reducing the need for additional finishing. Its compact form factor keeps handling straightforward and integrates into standard die sets used for busbar and panel fabrication.
Suitable for
Punching round holes in control cabinet doors and panels
Creating cable entry points and conduit access
Fitting small controls, indicator lights and switches
Busbar hole punching when used with the appropriate male die
When it may not be suitable
This female die is designed specifically to be used in combination with the corresponding male die; it cannot form proper holes alone. It is not intended for creating non-round or oversized openings, and it may be unsuitable for very thick or hardened materials beyond the rated capacity of the matched die set. For applications requiring threaded inserts or non-punched fits, alternative machining methods should be considered.
Key specifications
Shape and type: round female die (matrize)
Nominal hole diameter: 21.5 mm
Material: metallic construction for durability
Typical application: panel and busbar punching when paired with male die
Form factor: compact, workshop/field compatible
How to use
Install the female die into the corresponding die holder following the press or punching tool manufacturer’s instructions. Fit the matched male die opposite the female die to complete the punch assembly. Position the panel or busbar material between the dies, align to the desired hole location and perform the punching operation with the appropriate press or manual punch tool. After punching, inspect the hole edges and remove any small burrs if necessary. Follow safety procedures and tooling guidelines for material thickness and maximum cycle load.
What to consider before purchase
Ensure you obtain the matching male die compatible with this female 21.5 mm matrize
Verify the die set is suitable for the material type and thickness you plan to punch
Confirm compatibility with your press or punching tool and holder system
Assess whether a punched hole is acceptable for your application or if alternative finishing is required
Usage recommendations
Use the Rittal 21.5 mm round female die only as part of a matched die pair and follow the tool manufacturer's limits for material thickness. Regularly inspect dies for wear, keep mating surfaces clean, and deburr punched edges for best functional results when installing controls, indicators or busbar connections.

## Specifications

| Feature | Value |
|---|---|
| Package weight | 272 g |
| Product colour | Metallic |
| Hole diameter | 21.5 mm |

## FAQ

### How much does the Rittal AS 4055.780 enclosure accessory cost, and is it available for purchase?

The price is 96.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 13.07.2026 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 4055.780 enclosure accessory?

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/12401205/68689566_large.webp