# Residual Current Circuit Breaker ABB FH204 AC-25/0.03 25 A 4P

**URL:** https://aio.lv/en/product--abb-2csf204004r1250--4910628
**Data updated:** 2026-04-27 22:26 (EEST)
**Category:** Power Sockets
**Manufacturer:** ABB
**Manufacturer code:** 2CSF204004R1250
**EAN:** 8012542893905
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.99 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 21.48 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--abb-2csf204004r1250--4910628

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.06.2026 | free |
| Pickup points | 29.06.2026 | 1.99 EUR |
| Courier delivery to door | 29.06.2026 | 4.99 EUR |

## Summary description

ABB FH204 AC-25/0.03 is a 4-pole residual current circuit breaker (RCBO/RCD+MCB) with 25 A rated current and 30 mA residual current sensitivity (AC type). It provides combined overcurrent and earth-leakage protection for TN/TT electrical installations, suitable for residential and commercial circuits requiring both short-circuit/isolation and touch-current protection.

## Long description

ABB FH204 AC-25/0.03 is a 4-pole residual current circuit breaker that combines overcurrent protection with earth-leakage detection in a single device. Rated for 25 A and with a 30 mA AC-type residual current sensitivity, this unit protects TN and TT electrical systems by interrupting supply in case of overload, short circuit or dangerous leakage currents. The compact four-pole design simplifies protection of three-phase circuits with neutral, offering both person-protection against electric shock and basic fault isolation for residential and light commercial installations.
Advantages
The ABB FH204 AC integrates magnetic and thermal overcurrent protection with a residual current detector, reducing the need for separate devices and simplifying installation. AC-type sensitivity detects sinusoidal alternating leakage currents, while the 30 mA trip threshold balances safety for persons with immunity to common transient disturbances. The four-pole construction provides coordinated protection for three-phase circuits including neutral, and the device is designed for DIN-rail mounting and straightforward wiring in standard distribution boards.
Suitable for
 Protection of three-phase (3P+N) circuits in residential buildings
 Small commercial or light industrial distribution boards
 Circuits requiring both overcurrent and 30 mA earth-leakage protection
 Applications with TN and TT earthing systems
When it may not be suitable
This ABB FH204 AC device is AC-type and therefore detects sinusoidal alternating residual currents; it may not provide reliable protection against pulsating DC or smooth DC leakage currents produced by some electronic equipment or EV chargers. For installations where DC residual currents are possible, a device with A or B type sensitivity should be considered. Also, the 25 A rating must match the circuit conductor sizing and load requirements; higher continuous currents require a device with a larger rated current.
Key specifications
 Poles: 4 (three-phase + neutral)
 Rated current: 25 A
 Residual trip sensitivity: 30 mA (AC type)
 Function: Combined overcurrent (MCB) and residual current (RCD) protection
 Installation: DIN-rail mounting, modular form factor for distribution boards
How to use
Install the ABB FH204 AC-25/0.03 on a standard 35 mm DIN rail in the distribution board, ensuring correct orientation and secure terminal connections for all four conductors. Connect incoming supply to the line terminals and load circuits to the load terminals, observing proper torque for screws and manufacturer wiring recommendations. After installation, verify correct operation by performing a functional test using the device test button or an external RCD tester, and confirm that the device trips at the expected conditions before placing the circuit into service.
What to consider before purchase
 Compatibility with the installation earthing system (TN or TT)
 Whether AC-type residual current sensitivity is sufficient for connected equipment
 Circuit rated current and conductor sizing relative to the 25 A rating
 Available space on DIN rail and distribution board layout
Usage recommendations
Use the ABB FH204 AC-25/0.03 for combined circuit and personal protection in three-phase installations where leakage currents are predominantly sinusoidal. Schedule periodic testing of the residual current function and verify connections during routine maintenance to ensure ongoing protection performance.

## Specifications

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.403 kg |

## FAQ

### How much does the ABB FH204 AC-25/0.03 residual current breaker cost, and is it available for purchase?

The price is 25.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 24 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 22.06.2026 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 ABB 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 ABB 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: weight, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

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