# Siemens 3NA3250 NH Size 2 Safety Fuse, 300A, 500V, gG Class

**URL:** https://aio.lv/en/product--siemens-3na3250--1514730
**Data updated:** 2026-05-18 02:52 (EEST)
**Category:** Power Supplies (PSU)
**Manufacturer:** Siemens
**Manufacturer code:** 3NA3250
**EAN:** 4001869056333
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 122.99 €
**Prices and availability valid until:** 2026-08-01 23:59
**Price without VAT (21%):** 101.64 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3na3250--1514730

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Courier delivery to door | 24.07.2026 | 53.99 EUR |

## Summary description

The Siemens 3NA3250 is a high-performance NH size 2 safety fuse designed for industrial electrical protection. Rated at 300A and 500V, this gG class fuse provides reliable short-circuit and overload protection for electrical installations. It features standard non-insulated gripping lugs, ensuring compatibility with standard fuse bases. This unit is essential for maintaining safety and operational integrity in power distribution systems.

## Long description

The Siemens 3NA3250 is a high-performance NH size 2 safety fuse engineered for robust electrical protection in industrial environments. With a rated current of 300A and a voltage rating of 500V, this gG class fuse is designed to provide reliable protection against short circuits and overloads in power distribution systems. Its construction features standard non-insulated gripping lugs, making it fully compatible with industry-standard NH fuse bases.
Advantages
This safety fuse offers exceptional reliability and consistent performance under demanding electrical conditions. The gG class classification ensures a full-range breaking capacity, meaning it can safely interrupt both low-level overloads and high-level short-circuit currents. Its standardized design allows for seamless integration into existing electrical infrastructure, minimizing downtime during maintenance or replacement. The robust build quality ensures long-term operational integrity for critical power systems.
Suitable for
Industrial power distribution boards
Electrical switchgear installations
Protection of power cables and equipment
General industrial electrical infrastructure
When it may not be suitable
This fuse is not suitable for applications requiring specialized characteristics such as ultra-fast acting protection for sensitive semiconductors, which would require aR class fuses. It is also not intended for use in environments where the voltage exceeds 500V or where the current requirements are significantly different from the 300A rating.
Key specifications
Size: NH 2
Rated current: 300A
Rated voltage: 500V
Operating class: gG
Connection type: Non-insulated gripping lugs
How to use
The fuse should be installed into a compatible NH size 2 fuse base by qualified personnel. Ensure that the power supply is disconnected before attempting to insert or remove the fuse. Use appropriate insulated tools and personal protective equipment to handle the gripping lugs. Once positioned, ensure the fuse is firmly seated in the base contacts to prevent overheating due to poor electrical connection.
What to consider before purchase
Verify that the current and voltage ratings match your specific circuit requirements.
Ensure the fuse base size is compatible with NH size 2 components.
Check that the operating class gG is appropriate for the intended protection application.
Usage recommendations
Always replace fuses with the exact same type and rating to maintain the safety and integrity of the electrical system. Regular inspections of the fuse base contacts are recommended to ensure optimal conductivity and prevent premature failure.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Purpose | High voltage |

### Design

| Feature | Value |
|---|---|
| Product colour | Multicolour |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 655 g |
| Package depth | 77 mm |
| Package height | 185 mm |
| Package width | 158 mm |

### Logistics data

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the Siemens 3NA3250 NH Size 2 Safety Fuse 300A 500V cost, and is it available for purchase?

The price is 122.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 21.07.2026 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 Siemens 3NA3250 NH Size 2 Safety Fuse 300A 500V 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 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

### 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/1514730/57989293_large.webp