# Miniature Circuit Breaker HiSmart NV821570 3‑pole 50 A Class C

**URL:** https://aio.lv/en/product--hismart-nv821570--10840446
**Data updated:** 2025-12-30 12:45 (EET)
**Category:** Power Sockets
**Manufacturer:** HiSmart
**Manufacturer code:** NV821570
**EAN:** 6942034315818
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.99 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 8.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hismart-nv821570--10840446

## 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

Miniature circuit breaker HiSmart NV821570 is a 3‑pole protective device rated for 50 A with Class C trip characteristics. Designed to protect three‑phase circuits from overloads and short circuits, it suits residential, commercial and light industrial distribution panels. Compact DIN‑rail mounting enables space‑efficient installation and reliable automatic disconnection for safety and equipment protection.

## Long description

Miniature Circuit Breaker HiSmart NV821570 is a three-pole protective device rated at 50 A with Class C trip characteristics, intended for protection of three-phase circuits against overload and short circuit. The compact breaker is designed for DIN‑rail (35 mm) mounting in residential, commercial and light industrial distribution panels and provides clear contact position indication for safer inspection.
Advantages
The HiSmart NV821570 offers overload and short-circuit protection with a rated breaking capacity of 6 kA and Class C tripping characteristic. It features a flame-retardant, high temperature and impact resistant body, an anti-mistake contact terminal block and top-and-bottom connections that accept cables or pin-type busbars up to 25 mm². Mechanical and electrical lives are specified for long service: 20,000 mechanical operations and 8,000 electrical operations.
Suitable for
Protection of three-phase distribution circuits in residential electrical panels
Commercial and light industrial distribution boards
DIN-rail mounting installations requiring compact, three-pole protection
Key specifications
Number of poles: 3
Rated current (In): 50 A
Trip class: C
Rated operational voltage (Ue): AC 400 V
Insulation voltage (Ui): 500 V
Rated frequency: 50/60 Hz
Rated breaking capacity (Icu): 6000 A
Rated impulse withstand voltage (Uimp): 6000 V
Mechanical life: 20,000 cycles
Electrical life: 8,000 cycles
Protection degree: IP20
Terminal connection type: cable / pin-type busbar; accepts conductors up to 25 mm² (18–3 AWG)
Connection: top and bottom
Mounting: DIN rail EN 60715 (35 mm) with fast clip
Operating temperature: -5°C to +40°C (daily average \<35°C)
Storage temperature: -25°C to +70°C
Dimensions: 85.5 × 78.8 × 54 mm
Standards: IEC 60898-1 / EN 60898-1
Warranty: 24 months
How to use
Install the HiSmart NV821570 on a 35 mm DIN rail using the built-in fast clip. Connect incoming and outgoing three-phase conductors to the top and bottom terminals, ensuring wire cross-sections do not exceed specified limits and that terminal screws are tightened to the manufacturer’s torque (refer to installation manual). Verify correct orientation and that the contact position indicator shows expected states; perform insulation and continuity checks before energising the circuit.
Usage recommendations
Use this circuit breaker as part of a properly designed electrical distribution system. Ensure coordination with upstream and downstream protective devices and confirm that the Class C tripping characteristic and 50 A rating suit the expected load and short-circuit levels. Do not exceed specified conductor sizes or environmental temperature limits.

## FAQ

### How much does the Miniature Circuit Breaker HiSmart NV821570 3P 50A cost, and is it available for purchase?

The price is 9.99 € (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 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/10840446/60188093_large.webp