# Wago 279-620/281-408 4-Conductor Diode Terminal Block, 1.5mm², Grey

**URL:** https://aio.lv/en/product--wago-279-620281-408--12472532
**Data updated:** 2026-05-18 09:44 (EEST)
**Category:** Power Sockets
**Manufacturer:** Wago
**Manufacturer code:** 279-620/281-408
**EAN:** 4045454193843
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 20.99 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 17.35 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--wago-279-620281-408--12472532

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The Wago 279-620/281-408 is a 4-conductor diode terminal block designed for reliable electrical connections in control cabinets and industrial automation. With a 1.5mm² cross-section, this grey terminal block ensures secure wiring and efficient signal routing. It is ideal for professional electrical installations requiring integrated diode functionality for circuit protection and logic applications.

## Long description

The Wago 279-620/281-408 is a high-quality 4-conductor diode terminal block engineered for precise electrical signal management in industrial control systems. Designed for a 1.5mm² cross-section, this component provides a compact and reliable solution for routing signals while incorporating integrated diode functionality. Its robust construction ensures stable connections within control cabinets, making it an essential element for professional automation setups where space efficiency and circuit protection are paramount.
Advantages
This terminal block offers significant benefits for complex wiring environments by combining multiple connection points with built-in diode protection in a single, space-saving unit. The 4-conductor design allows for flexible signal distribution, reducing the need for additional bridging components. Its grey, durable housing is built to withstand the rigors of industrial use, ensuring long-term operational reliability and simplified maintenance for electrical technicians.
Suitable for
Industrial automation and control cabinet wiring
Logic circuits requiring signal blocking or protection
Applications where space-saving signal routing is necessary
Professional electrical installations requiring diode-integrated components
When it may not be suitable
This terminal block is not intended for high-power applications exceeding its 1.5mm² cross-section capacity. It is also not suitable for environments requiring specialized hazardous area protection unless specifically rated for such conditions.
Key specifications
Conductor capacity: 1.5mm²
Number of connection points: 4
Width: 4 mm
Depth: 68 mm
Height: 27 mm
Color: Grey
How to use
To install the terminal block, mount it onto a standard DIN rail within your control cabinet. Strip the insulation from your wires to the appropriate length and insert them into the spring-clamp connection points. Ensure the wires are fully seated to guarantee a secure electrical contact. The integrated diode functionality is pre-configured, allowing for immediate use in logic or protection circuits without additional assembly.
What to consider before purchase
Verify that the 1.5mm² cross-section is compatible with your wire gauges
Ensure the diode specifications meet your specific circuit requirements
Check the physical dimensions to confirm fitment within your existing terminal block assembly
Usage recommendations: Always ensure that the power supply is disconnected before performing any wiring or maintenance on the terminal block to prevent electrical hazards.

## Specifications

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 27 mm |
| Width | 4 mm |
| Depth | 68 mm |

### Features

| Feature | Value |
|---|---|
| Number of poles | 4P |

### Design

| Feature | Value |
|---|---|
| Product colour | Grey |

## FAQ

### How much does the Wago 279-620/281-408 4-Conductor Diode Terminal Block cost, and is it available for purchase?

The price is 20.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 100 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 14.07.2026 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 Wago 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 Wago 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/12472532/68794435_large.webp