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header-product CNC NV821891 Residual Current Breaker with Over-Current 2P 25A C-Curve 30mA 6kA
20.99 €

CNC NV821891 Residual Current Breaker with Over-Current 2P 25A C-Curve 30mA 6kA

CNC NV821891 Residual Current Breaker Photo 1
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CNC NV821891 Residual Current Breaker with Over-Current 2P 25A C-Curve 30mA 6kA

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CNC NV821891 Residual Current Breaker with Over-Current 2P 25A C-Curve 30mA 6kA

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Short description

CNC NV821891 residual current breaker with over-current protection, featuring a 2-pole configuration, 25A rated current, C tripping curve, 30mA residual operating current, and 6kA breaking capacity. Designed for residential and commercial electrical installations to provide reliable protection against short circuits, overloads, and earth leakage faults, ensuring safety for personnel and electrical systems.
Available for order: 5 pcs.
Warranty: 2 Years
SKU: 12659987
Manufacturer: CNC
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
02.11.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
05.11.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 €
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
05.11.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
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Product information

Description

The CNC NV821891 residual current breaker with over-current protection is an essential component designed for modern electrical installations, offering reliable safeguards for both residential and commercial environments. This 2-pole device combines overload, short-circuit, and earth leakage protection in a single compact unit, ensuring comprehensive safety for personnel and electrical circuits alike.

Advantages

This combined device provides dual protection by integrating circuit breaker and residual current functions into one streamlined housing, which saves valuable space in electrical distribution boards. It features an anti-mistake contact terminal block to ensure secure wiring, alongside a flame-retardant enclosure built with high temperature and impact resistance properties. The clear contact position indicator displays red for closed and green for opened states, allowing for quick visual checks during maintenance.

Suitable for

  • Residential electrical distribution panels
  • Commercial building sub-circuits
  • Protection of household appliances and office equipment
  • Safeguarding lighting and power socket circuits against earth leakage

This device may not be suitable for industrial applications requiring higher breaking capacities exceeding 6kA or operating outside standard single-phase 230V AC grid specifications. It is also not intended for direct outdoor installation without a proper weatherproof enclosure due to its IP20 safety class.

Key specifications

  • 2 poles
  • 25 A rated current
  • C tripping curve
  • AC 230 V rated voltage
  • 30 mA rated sensitivity
  • 6000 A rated short-circuit capacity
  • IP20 safety class
  • DIN rail EN 60715 (35mm) installation
  • Up to 35mm² wire and busbar cross-sectional area

How to use

Installation should be performed exclusively by a qualified electrician in accordance with local electrical regulations and safety standards. The unit is designed for mounting on a standard 35mm DIN rail following the EN 60715 specification. Connections are made from the top using compatible cables or pin-type busbars with a cross-sectional area of up to 35mm². Ensure all terminal screws are securely tightened to prevent loose connections before restoring power to the circuit.

What to consider before purchase

  • Verify that the 25A rated current and C-curve match your specific load requirements.
  • Confirm that your supply voltage corresponds to AC 230 V at 50/60 Hz.
  • Ensure the 30mA sensitivity aligns with standard personal protection needs.
  • Check available space in your distribution board for the 36mm width device.

Always disconnect the main power supply before installing, inspecting, or servicing the residual current breaker. Periodically test the device using the integrated test button to ensure proper functioning of the earth leakage protection mechanism.

Description

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Product comparison

The CNC NV821891 Residual Current Breaker with Over-Current 2P 25A C-Curve 30mA 6kA is compared with similar residual current breakers from the same CNC product family. All compared devices share fundamental safety characteristics, including a C-type tripping curve, 30mA residual current sensitivity, and 6kA breaking capacity, providing reliable protection against short circuits, overloads, and earth leakage faults in residential and commercial environments. The practical differences lie in the pole configuration and rated current.

⚙️ Specifications and core differences between the main product and the alternative models.

SpecificationCNC NV821891 (2P 25A)CNC NV821907 (2P 32A)CNC NV821938 (4P 20A)CNC NV821945 (4P 25A)CNC NV821884 (2P 20A)CNC NV821921 (4P 16A)Practical significance
Device typeResidual current breaker with over-currentResidual current breaker with over-currentResidual current breaker with over-currentResidual current breaker with over-currentResidual current breaker with over-currentResidual current breaker with over-currentAll models provide combined protection against overloads, short circuits, and earth leakage.
Pole configuration2P2P4P4P2P4PTwo-pole models are designed for single-phase networks, while four-pole models suit three-phase power distribution.
Rated current25A32A20A25A20A16AThe rated current must be selected to match the cable cross-section and expected electrical load of the circuit.
Tripping curveCCCCCCStandard C-curve is suitable for most residential and commercial loads with moderate inrush currents.
Residual operating current30 mA30 mA30 mA30 mA30 mA30 mAIdentical level of personal protection against electric shock across all options.
Breaking capacity6 kA6 kA6 kA6 kA6 kA6 kAEqual capability to safely interrupt short-circuit currents.

◎ Suitability and use case scenarios for different electrical distribution requirements.

Use caseRecommended productWhy
Single-phase circuit with moderate loads (e.g., standard household appliances)CNC NV821891 Residual Current Breaker with Over-Current 2P 25A C-Curve 30mA 6kAProvides a 2-pole setup and a 25A rating well-suited for standard residential branch circuits.
Single-phase circuit with higher power demandsCNC NV821907 Residual Current Breaker with Over-Current 2P 32A C Curve 30mA 6kAHigher 32A rating accommodates circuits with increased electrical load requirements.
Three-phase distribution network with matching loadResidual Current Breaker with Over-Current CNC NV821945 4-Pole 25A C-Curve 30mA 6kAOffers the same 25A current rating adapted for 4-pole three-phase systems.
The CNC NV821891 Residual Current Breaker with Over-Current 2P 25A C-Curve 30mA 6kA differs from alternatives through its specific combination of a 2-pole configuration and a 25A current rating while maintaining identical core safety parameters. It is most suitable for protecting standard single-phase residential or commercial circuits with moderate load requirements. A buyer should prefer this option when their electrical installation layout requires a 2-pole 25A protective device.
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Customer reviews

Customer questions

FAQ

How much does the CNC NV821891 Residual Current Breaker cost, and is it available for purchase?

The price is 20.99 € (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 02.11.2026 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 CNC 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 CNC 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
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14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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