# EM Group ZSO Protective Screw Terminal Block 2.5/4mm2 Yellow-Green

**URL:** https://aio.lv/en/product--em-group-43454--12462715
**Data updated:** 2026-05-18 09:37 (EEST)
**Category:** Power Sockets
**Manufacturer:** EM Group
**Manufacturer code:** 43454
**EAN:** 5901592102866
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 5.78 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--em-group-43454--12462715

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

The EM Group ZSO protective screw terminal block is designed for reliable electrical connections in DIN rail mounting systems. With a capacity of 2.5/4mm2, this yellow-green terminal ensures secure grounding and circuit protection. Ideal for industrial and residential electrical panels, it provides a robust, vibration-resistant connection for professional electrical installations.

## Long description

The EM Group ZSO protective screw terminal block is a professional-grade component engineered for secure grounding and reliable electrical connectivity within DIN rail mounting systems. Designed to accommodate conductors with cross-sections of 2.5mm² to 4mm², this terminal block features a distinct yellow-green housing, which is the industry standard for protective earth connections. Its robust construction ensures long-term stability and safety in various electrical distribution environments.
Advantages
This terminal block offers exceptional mechanical strength and vibration resistance, making it suitable for demanding industrial applications where reliability is critical. The screw-clamp technology provides a high-pressure connection that maintains electrical integrity over time, reducing the need for maintenance. Its compact design allows for efficient space utilization within electrical panels, while the standardized mounting interface ensures quick and easy installation on standard DIN rails.
Suitable for
Grounding circuits in industrial control panels
Residential electrical distribution boards
Automation and instrumentation systems
Infrastructure projects requiring protective earth connections
When it may not be suitable
This terminal block is not intended for use with conductors exceeding 4mm² or for applications requiring specialized high-current power distribution beyond its rated capacity. It is also not suitable for environments where exposure to corrosive chemicals or extreme moisture exceeds the protection rating of the enclosure.
Key specifications
Conductor capacity: 2.5mm² to 4mm²
Mounting type: DIN rail
Color: Yellow-Green
Connection type: Screw terminal
Function: Protective earth (grounding)
How to use
To install the terminal block, snap it onto a standard DIN rail until it clicks securely into place. Strip the insulation from your grounding wire to the appropriate length, insert the conductor into the terminal opening, and tighten the screw using a compatible screwdriver to ensure a firm connection. Verify that the wire is held securely by pulling gently on it before finalizing the installation.
What to consider before purchase
Ensure the DIN rail type is compatible with the terminal block mounting system.
Verify that the wire gauge of your grounding conductor falls within the 2.5mm² to 4mm² range.
Check the available space in your electrical panel to accommodate the width of the terminal block.
Usage recommendations
Always ensure that the power supply is disconnected before performing any electrical installation work. Use a calibrated screwdriver to achieve the recommended torque for the screw terminal to prevent damage to the conductor or the terminal housing.

## FAQ

### How much does the EM Group ZSO Protective Screw Terminal Block 2.5/4mm2 cost, and is it available for purchase?

The price is 6.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 836 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 07.07.2026 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 EM Group 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 EM Group 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/12462715/68764514_large.webp