# Surge Protection Device HiSmart NV821730 2‑pole 1000 VDC

**URL:** https://aio.lv/en/product--hismart-nv821730--10841783
**Data updated:** 2025-12-30 12:45 (EET)
**Category:** Solar Panel Accessories
**Manufacturer:** HiSmart
**Manufacturer code:** NV821730
**EAN:** 6942108715124
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 41.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 34.70 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hismart-nv821730--10841783

## 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 NV821730 is a DC surge protection device designed for 2‑pole PV and DC installations with a nominal voltage rating of 1000 VDC. It provides transient overvoltage protection to safeguard inverters, string combiners and DC cabling from surges. Intended for commercial and residential solar systems, it is installed at the DC side to reduce equipment damage and downtime.

## Long description

HiSmart NV821730 is a 2-pole surge protection device rated for 1000 V DC designed to protect DC power systems, photovoltaic arrays and wind-generation DC equipment from transient overvoltages caused by switching events, induction lightning and direct lightning influence. The device conforms to IEC 61643-1 and CE standards and is intended for installation on the DC side of inverters, string combiners and other DC circuits to reduce equipment damage and downtime.
Advantages
The NV821730 offers Class B protection with a high maximum discharge current up to 100 kA and a nominal discharge current of 60 kA, a fast response time under 25 ns and a voltage protection level of ≤ 5 kV. It supports continuous operating voltages up to 1000 V DC, is rated for a wide operating temperature range (–40 °C to +85 °C) and is designed for DIN-rail (35 mm) mounting with 4–6 mm² conductor connections. Compliance with IEC 61643-1 and CE provides verified safety and performance criteria.
Suitable for
Photovoltaic (PV) string combiner boxes and DC arrays
Inverter DC input protection
Wind power DC systems and other industrial DC installations
Commercial and residential solar PV systems
Key specifications
Poles: 2
Class: B
Maximum continuous operating voltage (Uc): 1000 V DC
Nominal discharge current (In): 60 kA
Maximum discharge current (Imax): 100 kA
Voltage protection level (Up): ≤ 5 kV
Response time: \< 25 ns
Frequency: 50/60 Hz
Operating temperature: -40 °C to +85 °C
Relative humidity (at 25 °C): \< 95%
Installation: 35 mm DIN rail
Wire cross-section: 4–6 mm²
Dimensions: 54 x 90 x 67 mm
Standards: IEC 61643-1, CE
Warranty: 24 months
How to use
Mount the HiSmart NV821730 on a 35 mm DIN rail in the DC section of the PV or DC installation, close to the equipment to be protected (for example, string combiner or inverter DC input). Connect the two poles to the corresponding positive and negative DC conductors using appropriate 4–6 mm² wiring and ensure secure terminations. Verify system voltage does not exceed the 1000 V DC rating before energizing. Observe manufacturer and local electrical codes when performing installation and commissioning.
Usage recommendations
Install surge protection at the DC source and distribution points; periodically inspect connections and the device after severe surge events. Replace the protector if it shows signs of damage or after rated discharge events beyond nominal specifications.

## FAQ

### How much does the Surge Protection Device HiSmart NV821730 2P 1000VDC 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 — 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/10841783/60192879_large.webp