# Mersen Multiblock NH1 Fuse Switch Disconnector 3P 250A for Panel Mounting

**URL:** https://aio.lv/en/product--mersen-s229878a--12457253
**Data updated:** 2026-05-18 09:36 (EEST)
**Category:** Smart Switches
**Manufacturer:** Mersen
**Manufacturer code:** S229878A
**EAN:** 4027597026691
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 93.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 77.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mersen-s229878a--12457253

## 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 Mersen Multiblock NH1 is a 3-pole fuse switch disconnector rated for 250A, designed for secure panel mounting. This industrial-grade device ensures reliable circuit protection and safe isolation in electrical distribution systems. It is compatible with NH1 size fuses, providing efficient performance for demanding power applications. Its robust construction allows for easy installation and maintenance in various electrical infrastructure projects.

## Long description

The Mersen Multiblock NH1 is a high-performance 3-pole fuse switch disconnector engineered for reliable circuit protection and safe electrical isolation. Designed for a rated current of 250A, this industrial-grade device is specifically optimized for secure panel mounting in demanding electrical distribution systems. Its robust design ensures consistent performance and longevity, making it a dependable component for managing power flow and protecting equipment from overcurrent conditions.
Advantages
The primary benefit of the Mersen Multiblock NH1 lies in its superior safety features, which allow for the secure disconnection of circuits during maintenance or emergency situations. The device is built with high-quality materials that withstand the rigors of industrial environments, ensuring reliable operation over an extended service life. Its compact and ergonomic design facilitates straightforward installation on mounting plates, significantly reducing assembly time for electrical panels. Furthermore, the compatibility with standard NH1 size fuses ensures that users can easily source and replace protection elements as needed, maintaining system uptime and operational efficiency.
Suitable for
Industrial power distribution panels
Electrical infrastructure projects
Motor control centers
Main switchboards in commercial buildings
This device may not be suitable for applications requiring protection for currents significantly exceeding 250A or for environments with extreme environmental conditions that fall outside the specified operating parameters. It is also not intended for use in low-voltage residential circuits where smaller, DIN-rail mounted miniature circuit breakers are typically utilized.
Key specifications
Rated current: 250A
Number of poles: 3
Fuse size compatibility: NH1
Mounting type: Panel mounting
Application: Industrial electrical distribution
To use the Mersen Multiblock NH1, ensure the device is securely mounted to the panel surface using the appropriate hardware. Once installed, insert the compatible NH1 fuses into the designated slots. The switch can then be operated manually to connect or disconnect the circuit. Always ensure that the system is de-energized before performing any maintenance or fuse replacement to prevent electrical hazards.
What to consider before purchase
Verify that the 250A rating matches your circuit requirements
Ensure the panel space is sufficient for the device dimensions
Confirm that your system utilizes NH1 size fuses
Check that the installation environment meets industrial standards
For optimal performance and safety, always ensure that the fuse switch disconnector is installed by a qualified electrician in accordance with local electrical codes and manufacturer guidelines. Regularly inspect the connections for tightness and check for any signs of thermal stress during routine maintenance.

## FAQ

### How much does the Mersen Multiblock NH1 3P 250A Fuse Switch Disconnector cost, and is it available for purchase?

The price is 93.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 15 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, Installment. All transactions are 100% secure and encrypted.

### Can Mersen Multiblock NH1 3P 250A 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/12457253/68759436_large.webp