# ONKA Elektrik End Clamp for MRK and OPK Terminal Blocks, Grey

**URL:** https://aio.lv/en/product--onka-elektrik-onka-1212--12458272
**Data updated:** 2026-05-18 09:43 (EEST)
**Category:** Home & DIY Accessories
**Manufacturer:** ONKA Elektrik
**Manufacturer code:** ONKA-1212
**EAN:** 5900103207632
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.99 €
**Prices and availability valid until:** 2026-08-06 23:59
**Price without VAT (21%):** 3.30 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--onka-elektrik-onka-1212--12458272

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.07.2026 | free |
| Pickup points | 29.07.2026 | 1.89 EUR |
| Courier delivery to door | 29.07.2026 | 4.99 EUR |

## Summary description

The ONKA Elektrik end clamp is designed for secure mounting and positioning of MRK and OPK series terminal blocks on DIN rails. This grey component prevents lateral movement of terminal blocks, ensuring a stable and organized electrical connection system within control panels and distribution boards. Durable construction provides reliable mechanical support for industrial electrical installations.

## Long description

The ONKA Elektrik end clamp is a professional-grade component engineered for the secure mounting and precise positioning of MRK and OPK series terminal blocks on standard DIN rails. By providing a firm mechanical stop, this grey end clamp effectively prevents the lateral sliding or displacement of terminal blocks, ensuring that your electrical assembly remains organized and stable within control panels, switchgear, and distribution boards. Its robust design is specifically tailored to withstand the mechanical stresses found in demanding industrial electrical environments.
Advantages
This end clamp offers exceptional mechanical stability, ensuring that terminal blocks remain locked in their designated positions even under vibration or thermal expansion. The high-quality material construction provides long-term durability and resistance to environmental factors, which is essential for maintaining the integrity of complex wiring systems. Its compact and functional design allows for quick and easy installation, significantly reducing assembly time during the configuration of electrical cabinets.
Suitable for
Securing terminal blocks on DIN rails in industrial control panels
Preventing lateral movement in distribution boards
Organizing complex wiring systems in automation cabinets
Supporting electrical installations in switchgear environments
When it may not be suitable
This end clamp is specifically designed for use with MRK and OPK series terminal blocks and may not provide a secure fit for terminal blocks from other series or manufacturers. It is intended for standard DIN rail mounting and is not compatible with non-standard rail profiles or direct panel-mount applications.
Key specifications
Compatibility: MRK and OPK series terminal blocks
Mounting type: DIN rail
Color: Grey
Function: Lateral movement prevention
How to use
To install the end clamp, slide it onto the DIN rail alongside the terminal block assembly. Position it firmly against the side of the terminal block row to eliminate any gaps. Once in the desired position, tighten the integrated screw mechanism to lock the clamp securely onto the rail. Ensure that the clamp is flush against the terminal blocks to provide maximum mechanical support.
What to consider before purchase
Verify that your terminal blocks belong to the MRK or OPK series
Ensure your installation uses a standard DIN rail
Check the available space on the DIN rail to accommodate the width of the clamp
Usage recommendations
For optimal stability in large terminal block assemblies, it is recommended to place an end clamp at both ends of the row to ensure balanced mechanical pressure and prevent any shifting over time.

## FAQ

### How much does the ONKA Elektrik End Clamp for MRK and OPK Terminal Blocks cost, and is it available for purchase?

The price is 3.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 600 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 24.07.2026 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 ONKA Elektrik 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 ONKA Elektrik 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/12458272/68760408_large.webp