# PV combiner box HiSmart NV822294 DC 2-in 2-out IP67 for solar string protection

**URL:** https://aio.lv/en/product--hismart-nv822294--10842597
**Data updated:** 2025-12-30 12:45 (EET)
**Category:** Solar Panel Accessories
**Manufacturer:** HiSmart
**Manufacturer code:** NV822294
**EAN:** 6942367528749
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 133.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 110.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hismart-nv822294--10842597

## 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

PV combiner box HiSmart NV822294 is a DC 2-in/2-out junction box with IP67 protection designed for solar string systems. It consolidates two input strings into two outputs, supports safe wiring and overcurrent protection, and provides weatherproof enclosure for outdoor installation. Suitable for residential and small commercial PV arrays, it simplifies connection, maintenance and improves system reliability.

## Long description

PV combiner box HiSmart NV822294 is a DC 2-in/2-out junction box with IP67 protection designed for solar string systems. It consolidates two input strings into two outputs, provides surge protection and isolation on the DC side, and is suitable for outdoor installation thanks to a UV-resistant, flame-retardant polycarbonate enclosure with lockable cover. The unit includes MC4 connectors and meets standards including IEC529/EN60529, CE and RoHS.
Advantages
The combiner box integrates a 1000 V DC switch with a lockable handle and a patented DC arc extinguishing chamber, plus two DC surge protection devices (SPD) rated 1000 V, 40 kA each for fast response (\<25 ns). It features an IP67 waterproof rating, V0 UL94 flame retardancy, compact dimensions (280 x 190 x 130 mm) and straightforward wiring via PG09 and PG21 cable glands.
Suitable for
 Residential rooftop PV arrays with two string inputs
 Small commercial photovoltaic systems requiring two-in/two-out string consolidation
 Outdoor solar installations needing weatherproof DC junction boxes
Key specifications
 Model: HiSmart NV822294
 Configuration: DC 2 input → 2 output
 Max system voltage: 1000 V DC
 DC switch: 1000 V, 25 A (1 pc.), lockable handle, arc extinguishing chamber (UL508i, IEC60947-3 Pv2)
 SPD: 1000 V, 40 kA (2 pcs.), In = 20 kA, Up = 3.6 kV, response time \<25 ns (IEC 61643-31, EN 50539-11+A1)
 Short-circuit current per input (Isc): adjustable 15 A–30 A
 Max output current: 25 A
 Max discharge current (Imax): 40 kA
 Enclosure material: polycarbonate, V0 UL94
 Protection level: IP67 (waterproof and dustproof)
 Dimensions: 280 x 190 x 130 mm
 Cable glands: Input PG09 (2.5–16 mm), Output PG21 (2.5–16 mm)
 Operating temperature: -25 °C to +60 °C
 Standards: IEC529/EN60529, CE, RoHS
 Warranty: 24 months
How to use
Mount the HiSmart NV822294 combiner box on a suitable surface in an outdoor location protected from direct mechanical damage. Connect the two PV string inputs using the supplied or compatible MC4 connectors and route the two outputs through the output glands. Verify the input short-circuit current range (15–30 A) and ensure the system voltage does not exceed 1000 V DC. Use the lockable DC switch to isolate the DC side during maintenance and rely on the built-in SPDs for surge protection.
Usage recommendations
Install and commission the PV combiner box in accordance with local electrical codes and the PV system designer’s instructions. Confirm compatibility of MC4 connectors and cable cross-sections with the specified gland ranges, and lock the switch handle when the system is in service. Replace SPDs following manufacturer guidance after significant surge events; observe the 24-month warranty and arrange periodic inspections within the specified operating temperature range.

## FAQ

### How much does the PV combiner box HiSmart NV822294 cost, and is it available for purchase?

The price is 133.99 € (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, Installment. All transactions are 100% secure and encrypted.

### Can PV combiner box HiSmart NV822294 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 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/10842597/60193677_large.webp