# Kanlux KRD10-4/40/30-B Residual Current Circuit Breaker 4P 40A 30mA Type B

**URL:** https://aio.lv/en/product--kanlux-38540--12448446
**Data updated:** 2026-05-18 02:45 (EEST)
**Category:** Power Sockets
**Manufacturer:** Kanlux
**Manufacturer code:** 38540
**EAN:** 5905339385406
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 254.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 210.32 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kanlux-38540--12448446

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The Kanlux KRD10-4/40/30-B is a 4-pole residual current circuit breaker (RCCB) designed for electrical safety. With a rated current of 40A and a sensitivity of 30mA, this Type B device provides protection against AC and pulsating DC residual currents. It is suitable for industrial and commercial applications, ensuring reliable fault current detection and circuit disconnection to prevent electrical hazards.

## Long description

The Kanlux KRD10-4/40/30-B is a high-performance 4-pole residual current circuit breaker (RCCB) engineered to provide advanced electrical safety in demanding environments. This device is specifically designed to detect and interrupt circuits in the event of leakage, offering robust protection against both AC and pulsating DC residual currents. By integrating this component into your electrical distribution system, you ensure a high level of safety for both personnel and equipment, effectively mitigating the risks associated with electrical faults.
The primary advantage of this Type B residual current circuit breaker lies in its sophisticated detection capabilities. Unlike standard Type AC or A devices, the Type B configuration is capable of identifying complex residual currents, including smooth DC components, which are increasingly common in modern electronic installations. Its reliable construction ensures consistent performance and long-term durability, making it an essential safety component for complex electrical networks that require comprehensive protection against diverse fault types.
Suitable for
Industrial automation systems and machinery
Photovoltaic (PV) installations and solar inverters
Electric vehicle (EV) charging stations
Variable frequency drives and motor control centers
Commercial buildings with high concentrations of power electronics
This device may not be suitable for simple residential circuits that only require basic protection against standard AC leakage, as Type B breakers are specialized for more complex electrical environments. It is also not intended for use in circuits exceeding its rated current capacity of 40A or in applications where the specific fault current characteristics fall outside the scope of Type B protection standards.
Key specifications
Number of poles: 4
Rated current: 40A
Rated residual operating current: 30mA
Device type: Type B
Application: AC and pulsating DC residual current protection
Installation of the Kanlux KRD10-4/40/30-B must be performed by a qualified electrician in accordance with local electrical codes and safety regulations. The device is designed for mounting on standard DIN rails within a distribution board. Ensure that all connections are tightened to the specified torque to prevent overheating and ensure optimal electrical contact. Once installed, the device should be tested using the integrated test button to verify its mechanical and electrical functionality.
What to consider before purchase
Verify that the 40A rated current matches the requirements of your circuit load.
Ensure the 30mA sensitivity is appropriate for the intended level of personnel protection.
Confirm that your installation requires Type B protection for specific equipment like inverters or EV chargers.
Check the available space in your distribution board for a 4-pole modular device.
Regular maintenance and periodic testing of the residual current circuit breaker are recommended to ensure continued operational safety. It is advised to perform a manual test using the test button at least every six months to confirm that the tripping mechanism remains fully functional.

## FAQ

### How much does the Kanlux KRD10-4/40/30-B Residual Current Circuit Breaker cost, and is it available for purchase?

The price is 254.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 06.07.2026 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 Kanlux KRD10-4/40/30-B Residual Current Circuit Breaker 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 Kanlux 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 Kanlux 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/12448446/68751426_large.webp