# Eti-Polam NH3 Fuse Link 455A gTr 315kVA 400V WT-3

**URL:** https://aio.lv/en/product--eti-polam-004115407--12466343
**Data updated:** 2026-05-18 09:37 (EEST)
**Category:** Power Sockets
**Manufacturer:** Eti-Polam
**Manufacturer code:** 004115407
**EAN:** 5904722988873
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 41.99 €
**Prices and availability valid until:** 2026-08-21 23:59
**Price without VAT (21%):** 34.70 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eti-polam-004115407--12466343

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.08.2026 | free |
| Pickup points | 11.08.2026 | 1.79 EUR |
| Courier delivery to door | 11.08.2026 | 4.99 EUR |

## Summary description

The Eti-Polam NH3 fuse link is a high-performance electrical protection component designed for transformer protection. Rated at 455A with a gTr characteristic, it is optimized for 315kVA transformers at 400V. This WT-3 size fuse ensures reliable circuit interruption during overloads and short circuits, providing essential safety for industrial power distribution systems and electrical infrastructure.

## Long description

The Eti-Polam NH3 fuse link is a specialized electrical protection device engineered specifically for the reliable safeguarding of distribution transformers. With a rated current of 455A and a gTr characteristic, this component is precisely calibrated to protect 315kVA transformers operating at 400V. Its robust WT-3 size construction ensures consistent performance and effective circuit interruption during overload or short-circuit conditions within industrial power distribution networks.
Advantages
This fuse link offers exceptional reliability in demanding electrical environments by providing a specific gTr characteristic that matches the thermal load profile of transformers. The design minimizes the risk of unnecessary tripping while ensuring rapid response to genuine fault conditions. Its durable construction and standardized WT-3 dimensions allow for seamless integration into existing electrical infrastructure, providing long-term operational stability and enhanced safety for critical power distribution systems.
Suitable for
Protection of 315kVA distribution transformers
Industrial power distribution systems
Electrical infrastructure requiring gTr characteristic protection
Low-voltage grid management
When it may not be suitable
This fuse is not intended for general-purpose circuit protection where a standard gG characteristic is required, as its performance is specifically optimized for transformer thermal profiles. It should not be used in systems with voltage ratings exceeding 400V or for transformers with power ratings significantly different from 315kVA.
Key specifications
Rated current: 455A
Rated voltage: 400V
Characteristic: gTr
Transformer capacity: 315kVA
Size: WT-3
How to use
The fuse link should be installed by qualified electrical personnel into a compatible NH3-sized fuse base or switch-disconnector. Ensure the power is disconnected before installation to prevent electrical hazards. Align the fuse blades with the contact clips of the base and press firmly until fully seated. Verify that the fuse is correctly oriented and that the contact points are clean and secure before restoring power to the system.
What to consider before purchase
Verify the power rating of your transformer matches the 315kVA specification
Ensure the fuse base is compatible with the WT-3 size
Confirm that the system voltage is 400V
Check that the gTr characteristic is appropriate for your specific protection requirements
Usage recommendations
Always replace fuses with the exact same type and rating to maintain the integrity of the protection system. Regular inspection of the contact surfaces for signs of oxidation or overheating is recommended to ensure optimal performance.

## FAQ

### How much does the Eti-Polam NH3 455A gTr Fuse Link cost, and is it available for purchase?

The price is 41.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 06.08.2026 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 Eti-Polam 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 Eti-Polam 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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