# Ergom PMA 4 Al-Cu Bimetallic Washer, 100 pcs

**URL:** https://aio.lv/en/product--ergom-e13kc-01060100200--12456653
**Data updated:** 2026-05-18 09:42 (EEST)
**Category:** Tool kits and accessories
**Manufacturer:** Ergom
**Manufacturer code:** E13KC-01060100200
**EAN:** 5900003199518
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 30.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 25.20 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ergom-e13kc-01060100200--12456653

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The Ergom PMA 4 bimetallic washer is designed for reliable electrical connections between aluminum and copper conductors. This set includes 100 pieces, ensuring high-quality contact and preventing galvanic corrosion in electrical installations. Essential for professional electrical engineering, these washers provide durability and optimal conductivity in mixed-metal connection points.

## Long description

The Ergom PMA 4 bimetallic washer is a specialized component engineered to facilitate secure and stable electrical connections between aluminum and copper conductors. By utilizing a bimetallic structure, this washer effectively bridges the gap between two dissimilar metals, ensuring long-term electrical integrity and preventing the degradation typically associated with direct contact between copper and aluminum. This set contains 100 pieces, making it a practical solution for professional electrical installations where reliability and safety are paramount.
Advantages
The primary benefit of the Ergom PMA 4 washer is its ability to mitigate galvanic corrosion, which occurs when copper and aluminum are joined without proper protection. By providing a stable interface, the washer maintains optimal electrical conductivity and prevents the formation of high-resistance oxide layers that can lead to overheating or connection failure. The robust design ensures that the connection remains secure under various environmental conditions, contributing to the overall longevity and safety of the electrical system.
Suitable for
Connecting aluminum cables to copper terminals
Electrical distribution boards and switchgear
Industrial electrical installations
Mixed-metal wiring systems
When it may not be suitable
This washer is specifically designed for aluminum-to-copper transitions and is not intended for use in applications where both conductors are of the same material, as it would be unnecessary. It should also not be used in environments that exceed the thermal or mechanical ratings of the bimetallic material composition.
Key specifications
Material: Bimetallic (Aluminum-Copper)
Quantity: 100 pieces per pack
Compatibility: Designed for PMA 4 standard connections
Function: Prevents galvanic corrosion
How to use
To use the Ergom PMA 4 washer, place it between the aluminum and copper contact surfaces during the assembly of the electrical connection. Ensure that the surfaces are clean and free of debris before installation. Tighten the connection according to the torque specifications of the terminal or bolt being used to ensure proper pressure is applied across the washer, creating a reliable and low-resistance electrical path.
What to consider before purchase
Verify the compatibility of the washer size with your specific terminal or bolt diameter
Ensure the total current load of the connection is within the rated capacity of the conductors
Confirm that the installation environment is suitable for bimetallic contact points
Usage recommendations
Always ensure that the connection is tightened to the manufacturer's recommended torque to maintain consistent pressure and prevent loosening over time due to thermal expansion and contraction.

## FAQ

### How much does the Ergom PMA 4 Al-Cu Bimetallic Washer cost, and is it available for purchase?

The price is 30.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 06.07.2026 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, Bank cards on-line, Apple Pay, Google Pay. 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 Ergom 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 Ergom 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

## Image

https://aio.lv/img/cache/product/12456653/68758863_large.webp