# Residual current breaker HiSmart NV821945 25A 30mA

**URL:** https://aio.lv/en/product--hismart-nv821945--10842379
**Data updated:** 2025-12-30 12:45 (EET)
**Category:** Power Sockets
**Manufacturer:** HiSmart
**Manufacturer code:** NV821945
**EAN:** 6942034324124
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 37.99 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 31.40 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hismart-nv821945--10842379

## 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

Residual current breaker HiSmart NV821945 with rated current 25A and residual operating current 30mA. Designed to detect earth leakage and quickly disconnect the circuit to reduce electric shock and fire risk. Suitable for residential and light commercial electrical installations, protecting circuits with reliable trip performance and straightforward DIN-rail mounting.

## Long description

Residual current circuit breaker HiSmart NV821945 combines overcurrent protection and earth-leakage detection in a single 4-pole device. Rated for 25 A and a residual operating sensitivity of 30 mA, this RCBO disconnects circuits quickly on leakage or overcurrent to reduce the risk of electric shock and fire. It is designed for DIN-rail EN 60715 (35 mm) installation and fits residential and light-commercial electrical installations.
Advantages
The device offers combined protection against overloads, short circuits and earth faults, with C-class tripping characteristics and a rated short-circuit capacity of 6 kA. It features an anti-mistake contact terminal block, clear contact position indication (red = closed, green = open), flame-retardant and high-temperature resistant housing, and supports cable or pin-type busbar connections up to 35 mm².
Suitable for
Protecting household circuits on DIN-rail installations
Light commercial electrical panels requiring combined RCD and MCB protection
Circuits where 30 mA sensitivity is required for personal protection
Key specifications
Number of poles: 4
Rated current (In): 25 A
Tripping class: C
Rated residual sensitivity: 30 mA
Rated voltage (Ue): AC 230 V
Rated short-circuit capacity (Icn): 6000 A
Rated impulse withstand voltage (Uimp): 4000 V
Insulation voltage (Ui): 500 V
Frequency: 50/60 Hz
Break time: \<= 0.1 s
Mechanical life: 10000 operations; electrical life: 4000 operations
Connection type: cable or pin-type busbar (top connection), up to 35 mm²
Protection class: IP20
Installation: DIN-rail EN 60715 (35 mm)
Operating temperature: -25°C to +70°C
Dimensions: 82 × 72 × 78 mm
Standards: IEC 61009-1 / EN 61009-1
How to use
Mount the HiSmart NV821945 on a 35 mm DIN rail and connect supply and load conductors to the top terminals following polarity and local wiring regulations. Ensure cable or busbar cross-sections do not exceed 35 mm² and tighten terminals to the manufacturer’s recommended torque. Verify correct operation by performing a test trip after installation and before putting the circuit into service.
Usage recommendations
Use this RCBO for circuits requiring combined overcurrent and earth-leakage protection; test the device periodically and replace it if it fails a functional test. Observe national electrical codes and manufacturer instructions during installation and maintenance.

## FAQ

### How much does the Residual current breaker HiSmart NV821945 cost, and is it available for purchase?

The price is 37.99 € (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/10842379/60193147_large.webp