# Siemens 3NA3820 NH000 Safety Fuse 50A 500VAC 250VDC gL/gG Live

**URL:** https://aio.lv/en/product--siemens-3na3820--1506061
**Data updated:** 2026-07-24 04:28 (EEST)
**Category:** Other goods
**Manufacturer:** Siemens
**Manufacturer code:** 3NA3820
**EAN:** 4001869057101
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 21.99 €
**Prices and availability valid until:** 2026-08-24 23:59
**Price without VAT (21%):** 18.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3na3820--1506061

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.79 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

Siemens 3NA3820 high voltage safety fuse, model NH000 with a rated current of 50A. Designed for industrial electrical protection with 500VAC and 250VDC ratings, featuring gL/gG characteristic classes. Suitable for reliable overload and short-circuit protection in electrical distribution systems. Supplied as a single piece.

## Long description

The Siemens 3NA3820 NH000 Safety Fuse is an essential component designed for industrial electrical protection systems. With a rated current of 50A and ratings of 500VAC and 250VDC, this high-voltage safety fuse provides dependable safeguarding for electrical distribution networks. Built to meet stringent industry standards, it features gL/gG characteristic classes, ensuring reliable performance during standard operational loads and fault conditions. This live-contact safety fuse is engineered to interrupt overloads and short circuits effectively, protecting downstream equipment and minimizing downtime in demanding industrial environments.
Advantages
This Siemens safety fuse offers robust construction and precise tripping characteristics, which help maintain system integrity and prevent costly damage to electrical installations. Its standard NH000 size ensures compatibility with a wide range of fuse holders and disconnectors currently used in industrial switchgear. The gL/gG operational class provides full-range protection, meaning it can safely clear both low overload currents and high short-circuit currents. Additionally, its dual voltage rating of 500VAC and 250VDC allows for versatile application across both alternating and direct current networks.
Suitable for
Industrial electrical distribution systems
Overload and short-circuit protection in switchgear
Protection of cables and power lines
Alternating current (AC) and direct current (DC) industrial setups
When it may not be suitable
This product is not designed for residential consumer installations or low-voltage automotive applications where standard blade or cartridge fuses are typically required. It is also unsuitable for applications exceeding its rated current of 50A or voltage thresholds of 500VAC and 250VDC.
Key specifications
Rated current: 50A
Rated operational voltage AC: 500V
Rated operational voltage DC: 250V
Fuse size: NH000
Characteristic class: gL/gG
Contact type: Live
How to use
Installation of this safety fuse should only be performed by qualified electrical personnel following standard safety protocols and local electrical codes. Ensure that the circuit is completely de-energized before inserting or removing the fuse from the holder, unless utilizing appropriate insulated handling tools designed for live-working where applicable. Align the fuse blades properly with the corresponding contacts of the NH000 fuse base and push firmly until fully seated. Verify that the system voltage and current parameters match the ratings of the fuse prior to system re-energization.
What to consider before purchase
Verify that the rated current of 50A matches the requirements of your protected circuit.
Check the physical dimensions and NH000 size against your existing fuse holders or switchgear.
Confirm the operating voltage type (AC or DC) and maximum voltage limits of your system.
Always inspect the visual indicator of the fuse during routine maintenance checks and replace immediately if tripped or damaged to ensure continuous circuit protection.

## Specifications

| Feature | Value |
|---|---|
| Package weight | 131 g |
| Product colour | Multicolour |
| Purpose | High voltage |
| Package depth | 62 mm |
| Package height | 84 mm |
| Package width | 65 mm |
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the Siemens 3NA3820 Safety Fuse cost, and is it available for purchase?

The price is 21.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 27 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 10.08.2026 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 Siemens 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 Siemens 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

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