# Wago 284-621 Terminal Block, 35mm² Screw and 10mm² Spring Clamp, Grey

**URL:** https://aio.lv/en/product--wago-284-621999-991--12462731
**Data updated:** 2026-05-18 09:37 (EEST)
**Category:** Home & DIY Accessories
**Manufacturer:** Wago
**Manufacturer code:** 284-621/999-991
**EAN:** 4045454282561
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 24.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 20.65 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--wago-284-621999-991--12462731

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

The Wago 284-621 terminal block is a high-quality electrical connector designed for secure wire termination. It features a 35mm² screw terminal and three 10mm² spring clamp connections, providing versatile connectivity for industrial and control cabinet applications. This grey terminal block ensures reliable electrical contact and efficient installation in various wiring systems.

## Long description

The Wago 284-621 terminal block is a professional-grade electrical connector engineered for robust and reliable wire termination in demanding industrial environments. This component features a hybrid connection design, combining a 35mm² screw terminal for heavy-duty power distribution with three 10mm² spring clamp connections for secondary circuits. Its grey housing is designed for standard DIN-rail mounting, ensuring a secure and organized electrical installation within control cabinets and distribution boards.
Advantages
The primary benefit of this terminal block is its versatility in handling different wire gauges within a single compact unit. The combination of a high-capacity screw connection and multiple spring-loaded clamps allows for efficient branching of electrical circuits without the need for additional bridging components. The spring clamp technology provides maintenance-free connections that are resistant to vibrations, while the screw terminal ensures a high-torque, permanent connection for larger conductors. This dual-technology approach optimizes space and reduces installation time in complex wiring systems.
Suitable for
Industrial control cabinet wiring
Power distribution systems
Automation and machinery control panels
Electrical installations requiring mixed wire gauge connectivity
This terminal block may not be suitable for applications involving extremely high-frequency signals or environments where the operating temperature exceeds the specified thermal limits of the housing material. It is also not intended for direct use in hazardous locations without appropriate protective enclosures.
Key specifications
Main connection: 35mm² screw terminal
Secondary connections: 3x 10mm² spring clamp terminals
Width: 17.5 mm
Depth: 89 mm
Height: 39.5 mm
Color: Grey
To install the Wago 284-621, snap the unit onto a standard DIN rail. For the screw terminal, strip the conductor to the appropriate length and secure it using a compatible screwdriver, ensuring the specified torque is applied. For the spring clamp connections, insert the stripped wire directly into the terminal point until it is firmly held by the spring mechanism. Ensure all connections are fully seated and that no bare wire is exposed outside the terminal housing.
What to consider before purchase
Verify that the wire cross-sections match the 35mm² and 10mm² terminal capacities
Ensure the DIN rail type is compatible with the mounting footprint
Check the total current load requirements of your circuit
Confirm the environmental conditions are within the product's operating specifications
Always follow local electrical codes and safety regulations when installing terminal blocks. Ensure power is disconnected before performing any wiring work to prevent electrical shock or damage to the equipment.

## Specifications

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 39.5 mm |
| Width | 17.5 mm |
| Depth | 89 mm |

### Design

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

## FAQ

### How much does the Wago 284-621 Terminal Block - Grey cost, and is it available for purchase?

The price is 24.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 13 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 16.07.2026 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/12462731/68764529_large.webp