# Surge Protection Device HiSmart NV821747 3P 1000 VDC

**URL:** https://aio.lv/en/product--hismart-nv821747--10841784
**Data updated:** 2025-12-30 12:45 (EET)
**Category:** Solar Panel Accessories
**Manufacturer:** HiSmart
**Manufacturer code:** NV821747
**EAN:** 6942108715148
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 34.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 28.92 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hismart-nv821747--10841784

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.89 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

HiSmart NV821747 is a 3-pole DC surge protection device rated for 1000 VDC. Designed to protect DC electrical systems from transient overvoltages, it installs inline on the DC supply to safeguard equipment such as inverters, controllers and photovoltaic arrays. The compact module reduces risk of damage from lightning surges and switching transients and simplifies system maintenance and protection.

## Long description

HiSmart NV821747 is a 3-pole surge protection device designed for DC systems up to 1000 VDC. It protects photovoltaic arrays, inverters, controllers and other DC equipment from transient overvoltages caused by lightning induction, direct strikes or switching events. The compact module mounts on a 35 mm DIN rail and provides a measurable reduction in surge risk for industrial and renewable-energy DC installations.
Advantages
The NV821747 offers Class C protection with a nominal discharge current of 20 kA and a maximum discharge current of 40 kA, delivering fast response (under 25 ns) and a voltage protection level up to 3.6 kV. It complies with IEC 61643-1 and CE standards, fits standard 35 mm DIN-rail mounting, and supports wire cross-sections of 4–6 mm². Operating range covers -40 °C to +85 °C and relative humidity below 95% at 25 °C.
Suitable for
 Photovoltaic (PV) arrays and solar power systems
 DC inverters and power controllers
 Wind-power DC systems and industrial DC equipment
 Protection of long DC cable runs vulnerable to lightning or switching surges
Key specifications
 Poles: 3P
 Class: C
 Maximum continuous operating voltage (Uc): 1000 V DC
 Nominal discharge current (In): 20 kA
 Maximum discharge current (Imax): 40 kA
 Voltage protection level (Up): ≤ 3.6 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: 4–6 mm²
 Dimensions: 54 × 90 × 67 mm
 Standards: IEC 61643-1, CE
 Warranty: 24 months
How to use
Install the HiSmart NV821747 on a standard 35 mm DIN rail in the DC distribution or combiner box, connecting the three poles to the appropriate DC conductors according to system polarity and local wiring rules. Ensure wire cross-sections match the 4–6 mm² recommendation and that connections are tightened to the manufacturer's torque specifications. Place the device close to the protected equipment or at the point where the DC supply enters the installation to achieve optimal surge diversion.
Usage recommendations
For reliable protection, verify compatibility with system voltage (1000 VDC maximum) and replace the device after an extreme surge event or when indicator/monitoring shows end-of-life. Regular visual inspections and periodic testing of the DC system grounding and surge protection elements are recommended to maintain protection performance.

## FAQ

### How much does the Surge Protection Device HiSmart NV821747 3P 1000 VDC cost, and is it available for purchase?

The price is 34.99 € (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 02.07.2026 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/10841784/60192880_large.webp