# Unipolar Junction Box HiSmart NV821815 500A – solar PV junction box, single-pole, 500 A

**URL:** https://aio.lv/en/product--hismart-nv821815--10842252
**Data updated:** 2025-12-30 12:45 (EET)
**Category:** Solar Panel Accessories
**Manufacturer:** HiSmart
**Manufacturer code:** NV821815
**EAN:** 6942108747705
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 19.49 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 16.11 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hismart-nv821815--10842252

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

HiSmart NV821815 is a unipolar solar junction box designed for photovoltaic (PV) systems. Rated for 500 A, it provides a single-pole connection point for array strings and protects electrical interfaces. Suitable for rooftop and ground-mounted PV installations, it facilitates safe cable management, simple wiring and reliable DC current handling for system combiner or string-level applications.

## Long description

HiSmart NV821815 is a unipolar junction box rated for 500 A, designed for photovoltaic (PV) and electrical distribution systems. The single-pole junction box provides a protected connection point for cable connections or branches and is suitable for installation on DIN rails in electrical panels and PV combiner boxes. A transparent cover allows visual inspection of cable terminations while the PA (nylon) flame-retardant housing and brass-plated terminals ensure insulation, mechanical strength and reliable conductivity.
Advantages
The junction box supports up to 500 A and is compatible with AC/DC voltages up to 690–1000 V AIEC. Its body is made of PA nylon with V0 UL94 flame-retardant rating, and the brass-plated terminals are corrosion-resistant and durable. The transparent cover enables quick visual checks without disassembly, and the design is intended for simple DIN-rail mounting for straightforward integration into electrical and PV installations.
Suitable for
Solar PV string combiner boxes and array connections
Electrical distribution panels requiring a single-pole 500 A junction
Applications needing DIN-rail mounted cable junctions
Key specifications
Nominal current: 500 A
Voltage rating: AC/DC 690–1000 V AIEC
Cable capacity: 1x (3x15 - 8x24 mm) / 2x (6-35 mm²) / 5x (2.5-16 mm²) / 4x (2.5-10 mm²)
Installation: DIN-rail mounting
Terminals: brass plated
Body material: PA (nylon), flame retardant
Safety class: V0 UL94
Dimensions: 49 x 95 x 49 mm
How to use
Mount the junction box on a standard DIN rail inside the electrical panel or PV combiner enclosure. Route the cables into the appropriate terminal entries and secure conductors under the brass-plated terminals according to the specified cable capacity. Ensure the transparent cover is closed to allow visual inspection and to protect connections. Observe polarity and system voltage limits when making DC connections in PV applications.
Usage recommendations
Use the HiSmart NV821815 only within its rated current and voltage limits, and follow local electrical codes. Verify cable cross-sections match the listed capacities and tighten terminals to manufacturer torque specifications where available. For PV installations, ensure proper string fusing and grounding according to system design.

## FAQ

### How much does the Unipolar Junction Box HiSmart NV821815 500A cost, and is it available for purchase?

The price is 19.49 € (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 01.07.2026 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/10842252/60193047_large.webp