# Wago 721-434/001-000 MCS-MIDI Classic Terminal Block, 4-Pole, 5mm Pitch, Grey

**URL:** https://aio.lv/en/product--wago-721-434001-000--12481941
**Data updated:** 2026-05-27 18:00 (EEST)
**Category:** Electronics Accessories
**Manufacturer:** Wago
**Manufacturer code:** 721-434/001-000
**EAN:** 4044918869553
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 4.49 €
**Prices and availability valid until:** 2026-08-03 23:59
**Price without VAT (21%):** 3.71 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--wago-721-434001-000--12481941

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The Wago 721-434/001-000 is a 4-pole MCS-MIDI Classic terminal block designed for reliable wire-to-board connections. Featuring a 5mm pitch, this grey connector ensures secure electrical contact in industrial and electronic applications. Its compact design allows for efficient space utilization in control cabinets and modular systems, providing a robust solution for professional electrical installations.

## Long description

The Wago 721-434/001-000 MCS-MIDI Classic terminal block is a high-quality 4-pole connector engineered for dependable wire-to-board electrical connections. With a 5mm pitch and a durable grey housing, this component is designed to provide secure and stable contact in various industrial and electronic environments. Its compact dimensions make it an ideal choice for space-constrained applications, such as control cabinets and modular electronic systems, where reliability and efficient space management are essential.
Advantages
This terminal block offers significant benefits for professional electrical installations, primarily through its robust construction and user-friendly design. The inclusion of coding fingers ensures that the connector is 100% protected against mismating, which prevents costly errors during assembly and maintenance. Its versatile design supports both horizontal and vertical PCB mounting, providing flexibility for different circuit board layouts. The precise engineering of the solder pins ensures a stable and long-lasting electrical connection, contributing to the overall integrity of the system.
Suitable for
Industrial control cabinets
Modular electronic systems
PCB-to-wire connectivity
Automation and instrumentation equipment
When it may not be suitable
This terminal block is specifically designed for 5mm pitch applications and may not be compatible with systems requiring different spacing or higher current ratings beyond its specified capacity. It is intended for professional use and may not be suitable for high-vibration environments without additional strain relief measures.
Key specifications
Number of poles: 4
Pitch: 5 mm
Dimensions: 23.2 mm width, 12 mm depth, 15.2 mm height
Pin cross-section: 1 x 1 mm
Mounting type: PCB solder pins
Protection: 100% protected against mismating
Features: Integrated coding fingers
How to use
To use the Wago 721-434/001-000, align the connector with the corresponding solder pads on your printed circuit board. The unit can be mounted either horizontally or vertically depending on your specific board layout requirements. Ensure that the solder pins are correctly inserted into the PCB holes before soldering to establish a permanent electrical connection. The integrated coding fingers will guide the mating process, ensuring the connector is properly oriented and protected against incorrect insertion.
What to consider before purchase
Verify the pitch requirement of your PCB design matches the 5mm specification.
Ensure the 4-pole configuration meets your circuit connection needs.
Check the available space in your enclosure against the physical dimensions of the block.
Confirm the compatibility of your wire gauge with the terminal block connection type.
Usage recommendations
For optimal performance and longevity, ensure that the soldering process is performed according to standard industry practices to prevent cold solder joints. Always verify that the connector is fully seated before operation to maintain the integrity of the electrical contact.

## Specifications

| Feature | Value |
|---|---|
| Operating temperature (T-T) | -60 - 100 |
| Height | 15.2 mm |
| Width | 23.2 mm |
| Depth | 12 mm |
| Product colour | Grey |
| Number of poles | 4P |

## FAQ

### How much does the Wago 721-434/001-000 MCS-MIDI Classic Terminal Block cost, and is it available for purchase?

The price is 4.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 23.07.2026 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

## Image

https://aio.lv/img/cache/product/12481941/68808573_large.webp