# KOOP Elektro FSS Residual Current Circuit Breaker 4P 63A 30mA Type A

**URL:** https://aio.lv/en/product--koop-elektro-fss-4p-63a-typ-a--12444774
**Data updated:** 2026-05-18 02:46 (EEST)
**Category:** Power Sockets
**Manufacturer:** KOOP Elektro
**Manufacturer code:** FSS 4P 63A TYP A
**EAN:** 4260704861932
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The KOOP Elektro FSS residual current circuit breaker is a 4-pole electrical protection device rated at 63A with a 30mA sensitivity. Designed as a Type A device, it provides reliable protection against residual currents in AC and pulsating DC electrical systems. This modular component is essential for ensuring safety in residential and industrial electrical installations by preventing electric shocks and fire hazards.

## Long description

The KOOP Elektro FSS residual current circuit breaker is a high-performance 4-pole electrical protection device engineered to safeguard residential and industrial electrical systems. With a rated current of 63A and a sensitivity of 30mA, this Type A device is designed to detect and interrupt circuits in the presence of residual currents, including both alternating current and pulsating direct current. By integrating this component into your electrical distribution board, you significantly reduce the risk of electric shocks and prevent potential fire hazards caused by insulation faults.
Advantages
This residual current circuit breaker offers robust protection by reacting to a wider range of fault currents compared to standard AC-type devices. Its Type A classification ensures compatibility with modern electronic equipment that may generate pulsating DC components, such as power supplies, LED drivers, and variable speed drives. The modular design allows for seamless installation on standard DIN rails, making it a versatile choice for both new electrical projects and system upgrades. Its durable construction ensures long-term reliability and consistent performance in demanding electrical environments.
Suitable for
Residential electrical distribution boards
Industrial power supply systems
Protection of circuits with electronic components
Installations requiring Type A residual current protection
This device may not be suitable for systems requiring a higher sensitivity than 30mA or for applications where the total load current consistently exceeds the 63A rating. It is also not intended for use in DC-only circuits or environments with extreme environmental conditions that fall outside the manufacturer's specified operating temperature range.
Key specifications
Number of poles: 4
Rated current: 63A
Residual current sensitivity: 30mA
Type: A
Mounting: DIN rail
To use the KOOP Elektro FSS residual current circuit breaker, it must be installed by a qualified electrician within a distribution board. The device is mounted onto a standard DIN rail and connected to the incoming and outgoing power lines according to the wiring diagram provided on the housing. Once installed, the integrated test button should be pressed periodically to verify the mechanical functionality of the tripping mechanism.
What to consider before purchase
Verify that the 63A rating is sufficient for your total circuit load
Ensure the 30mA sensitivity meets local safety regulations
Confirm that your electrical system requires Type A protection
Check available space in your distribution board for a 4-pole modular device
Usage recommendations: It is recommended to perform a functional test using the integrated test button at least every six months to ensure the device remains in optimal working condition. Always ensure that the electrical installation complies with local building codes and safety standards.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. 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 KOOP Elektro 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 KOOP Elektro 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

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