# ONKA Elektrik MRK Universal Screw Terminal Block 4 mm2 Red

**URL:** https://aio.lv/en/product--onka-elektrik-t0-1027-1010027--12468624
**Data updated:** 2026-05-18 09:43 (EEST)
**Category:** Power Sockets
**Manufacturer:** ONKA Elektrik
**Manufacturer code:** T0-1027-1010027
**EAN:** 5900103213831
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.99 €
**Prices and availability valid until:** 2026-08-07 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-t0-1027-1010027--12468624

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.89 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

The ONKA Elektrik MRK universal screw terminal block is designed for secure electrical connections in control panels and distribution boards. Featuring a 4 mm2 capacity and a red housing, this component ensures reliable wire termination and conductivity. It is suitable for professional electrical installations, providing a robust and organized solution for managing circuit connections in various industrial and commercial applications.

## Long description

The ONKA Elektrik MRK universal screw terminal block is a high-quality electrical component engineered for secure and reliable wire termination in control panels and distribution boards. With a 4 mm2 capacity and a durable red housing, this terminal block facilitates efficient circuit management and ensures consistent electrical conductivity in professional installations. Its robust design is built to withstand the demands of industrial and commercial environments, providing a stable connection point for various wiring configurations.
Advantages
This terminal block offers exceptional mechanical strength and electrical performance, ensuring that connections remain secure even under vibration or thermal expansion. The screw-clamp technology provides a high-pressure contact that minimizes resistance and prevents accidental loosening of wires. Its compact design allows for high-density mounting within enclosures, helping to optimize space in complex electrical systems. The distinct red color assists in clear circuit identification and organization, which is essential for maintenance and troubleshooting.
Suitable for
Control panel wiring
Distribution board assembly
Industrial automation systems
Commercial electrical installations
General circuit management
When it may not be suitable
This terminal block is not intended for use in high-current applications exceeding its rated capacity or in environments with extreme corrosive conditions without proper protective enclosures. It is also not suitable for direct connection to flexible cables that require ferrules if the specific wire type is not compatible with the screw-clamp mechanism.
Key specifications
Wire capacity: 4 mm2
Connection type: Screw terminal
Housing color: Red
Mounting style: DIN rail compatible
Material: High-grade insulating plastic
How to use
To use the terminal block, mount it securely onto a standard DIN rail within your enclosure. Strip the insulation from the end of your wire to the recommended length, insert the conductor into the terminal opening, and tighten the screw using a compatible screwdriver until the wire is firmly clamped. Ensure that the connection is tight and that no bare wire is exposed outside the terminal housing.
What to consider before purchase
Verify that the 4 mm2 wire gauge matches your specific circuit requirements.
Ensure the terminal block is compatible with your existing DIN rail system.
Check if the red color coding aligns with your project's wiring standards.
Confirm the total number of terminals needed for your installation.
Usage recommendations: Always use a calibrated screwdriver to ensure the correct torque is applied to the screw terminal, preventing damage to the conductor or the terminal block itself. Regularly inspect connections during routine maintenance to ensure long-term reliability.

## FAQ

### How much does the ONKA Elektrik MRK 4 mm2 Screw Terminal Block Red 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 — 52 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 28.07.2026 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/12468624/68771240_large.webp