# Mersen Multiblock NH2 3P 400A Fuse Switch Disconnector for Panel Mounting

**URL:** https://aio.lv/en/product--mersen-w1002129a--11269114
**Data updated:** 2026-05-18 02:45 (EEST)
**Category:** Power Sockets
**Manufacturer:** Mersen
**Manufacturer code:** W1002129A
**EAN:** 4027597023393
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 142.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 118.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mersen-w1002129a--11269114

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

The Mersen Multiblock NH2 is a 3-pole fuse switch disconnector rated for 400A, designed for secure panel mounting. This industrial-grade device provides reliable circuit protection and isolation for electrical systems. It is compatible with NH2 size fuses, ensuring safe operation and maintenance in power distribution applications. Its robust construction makes it an ideal solution for demanding electrical infrastructure requirements.

## Long description

The Mersen Multiblock NH2 3P 400A fuse switch disconnector is a professional-grade electrical component engineered for secure panel mounting in industrial power distribution systems. This 3-pole device serves as both a protective fuse holder and a reliable isolation switch, ensuring that electrical circuits can be safely disconnected for maintenance or in the event of an overload. Built to accommodate NH2 size fuses, this unit offers robust performance and long-term durability in demanding infrastructure environments.
Advantages
This fuse switch disconnector provides exceptional operational safety by combining circuit protection with a manual isolation function in a single compact unit. Its design facilitates efficient heat dissipation and reliable electrical contact, which are critical for high-current applications up to 400A. The robust construction ensures resistance to mechanical stress and environmental factors, making it a dependable choice for critical power distribution tasks where system uptime and safety are paramount.
Suitable for
Industrial power distribution panels
Electrical infrastructure and switchgear systems
Motor control centers
Protection of low-voltage electrical circuits
When it may not be suitable
This device is not intended for use in residential applications or circuits exceeding its rated voltage and current specifications. It is also not suitable for environments where the required fuse size differs from the NH2 standard or where specialized environmental protection, such as high-level IP ratings for outdoor exposure, is required without an additional enclosure.
Key specifications
Rated current: 400A
Number of poles: 3
Fuse size compatibility: NH2
Mounting type: Panel mounting
Function: Fuse switch disconnector
How to use
The device is designed for installation onto a flat panel surface within an electrical cabinet. Ensure that the power supply is completely isolated before beginning the installation process. Secure the unit using the provided mounting points, ensuring all electrical connections are tightened to the manufacturer's specified torque settings. Once installed, insert the appropriate NH2 fuses into the designated slots. The switch handle allows for manual operation to connect or disconnect the circuit as needed during maintenance or system configuration.
What to consider before purchase
Verify that the 400A rating matches your circuit requirements
Ensure the panel space is sufficient for the physical dimensions of the unit
Confirm that your system utilizes NH2 size fuses
Check that the installation environment meets the necessary safety standards for industrial switchgear
Usage recommendations
Always use insulated tools when performing maintenance on the switch disconnector and ensure that the system is de-energized before replacing fuses. Regularly inspect the electrical connections for signs of wear or overheating to maintain optimal performance.

## FAQ

### How much does the Mersen Multiblock NH2 3P 400A Fuse Switch Disconnector cost, and is it available for purchase?

The price is 142.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 03.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Mersen Multiblock NH2 3P 400A Fuse Switch Disconnector be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Mersen 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 Mersen 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/11269114/63011356_large.webp