# Surge Protection Device HiSmart NV821709 3‑pole, 30–60 kA, 385 VAC

**URL:** https://aio.lv/en/product--hismart-nv821709--10841778
**Data updated:** 2025-12-30 12:45 (EET)
**Category:** Power Extension Cords & Surge Protectors
**Manufacturer:** HiSmart
**Manufacturer code:** NV821709
**EAN:** 6942034339098
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 35.49 €
**Prices and availability valid until:** 2026-08-03 23:59
**Price without VAT (21%):** 29.33 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hismart-nv821709--10841778

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

HiSmart NV821709 is a 3‑pole surge protection device rated for 385 VAC with an indicated discharge capacity range of 30–60 kA. Designed to protect electrical installations and connected equipment from transient overvoltages, it is suitable for residential, commercial or light‑industrial distribution panels. The device helps reduce risk of equipment damage and downtime by diverting surge energy to ground, simplifying protection in three‑phase systems.

## Long description

HiSmart NV821709 is a 3‑pole surge protection device rated for 385 VAC designed to protect electrical installations and connected equipment from transient overvoltages. Installed on a 35 mm DIN rail in the building's incoming low-voltage distribution box, the device diverts surge energy to ground and is suitable for TT, IT, TN‑S, TN‑C and TN‑C‑S systems. It meets international standards including IEC 61643-1 and carries CE marking.
Advantages
The unit provides Class B protection with a nominal discharge current of 30 kA and a maximum discharge current up to 60 kA, offering a fast response time of less than 25 ns. With a maximum continuous operating voltage of 385 V AC and a voltage protection level ≤ 2.2 kV, it supports three‑phase protection while occupying minimal panel space (54 × 90 × 67 mm). The device is rated for wide operating temperatures (-40 °C to +85 °C) and accepts conductor cross‑sections up to 6–10 mm².
Suitable for
Incoming line protection in residential distribution boards
Protection for commercial and light‑industrial three‑phase panels
Systems using TT, IT, TN‑S, TN‑C or TN‑C‑S earthing configurations
Key specifications
Poles: 3
Class: B
Maximum continuous operating voltage (Uc): 385 V AC
Nominal discharge current (In): 30 kA
Maximum discharge current (Imax): 60 kA
Voltage protection level (Up): ≤ 2.2 kV
Response time: \< 25 ns
Frequency: 50/60 Hz
Operating temperature: -40 °C to +85 °C
Relative humidity (at 25 °C): \< 95%
Mounting: 35 mm DIN rail
Wire cross‑section: up to 6–10 mm²
Dimensions: 54 × 90 × 67 mm
Standards: IEC 61643-1, GB18802.1, GB50057, CE
How to use
Install the HiSmart NV821709 on a standard 35 mm DIN rail inside the building's main low‑voltage distribution box, connecting the three phase conductors and the protective earth according to local wiring rules and the panel schematic. Ensure the device is placed at the incoming line position for primary protection and that connections are tightened to the manufacturer's torque recommendations. Verify compatibility with the earthing system (TT, IT, TN‑S, TN‑C or TN‑C‑S) before energizing the installation.
Usage recommendations
Check the device periodically and after known surge events; replace the unit if internal indicators (if present) show it is spent. Maintain clear labeling in the distribution board and follow applicable national electrical codes for installation and grounding.

## FAQ

### How much does the Surge Protection Device HiSmart NV821709 cost, and is it available for purchase?

The price is 35.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 13.07.2026 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. 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 HiSmart 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 HiSmart 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/10841778/60192876_large.webp