# Differential Circuit Breaker Hager CDA425J — 25 A, 4‑pole (4M), 30 mA, Type A, 6 kA

**URL:** https://aio.lv/en/product--hager-cda425j--12130989
**Data updated:** 2026-03-26 06:22 (EET)
**Category:** Power Sockets
**Manufacturer:** Hager
**Manufacturer code:** CDA425J
**EAN:** 3250611619857
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 48.49 €
**Prices and availability valid until:** 2026-08-10 23:59
**Price without VAT (21%):** 40.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hager-cda425j--12130989

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Pickup points | 24.07.2026 | 1.89 EUR |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

Hager CDA425J is a 4‑pole differential circuit breaker rated 25 A with 30 mA residual current sensitivity (Type A) and a 6 kA short‑circuit breaking capacity. Designed to detect AC and pulsating DC leakage, it provides electrical protection for residential and light commercial installations, combining overcurrent switching and earth‑fault detection in a single device.

## Long description

Hager CDA425J is a 4‑pole differential circuit breaker combining overcurrent switching and residual current protection in a single device. Rated for 25 A and featuring 30 mA residual current sensitivity (Type A), this device detects AC and pulsating DC leakage currents while interrupting the supply in the event of earth faults or overloads. Its 6 kA short‑circuit breaking capacity and 4M design make it suitable for protecting multi‑phase circuits in residential and light commercial electrical installations.
Advantages
The Hager CDA425J integrates fault detection and switching functionality to reduce the number of separate protective components required in a distribution board. With Type A residual current detection, it reliably responds to both AC and pulsating DC leakage currents. The 4‑pole configuration simplifies protection of three‑phase circuits and prevents unsafe potential differences by disconnecting all poles simultaneously. A 6 kA breaking capacity ensures secure interruption under short‑circuit conditions typical for small installations.
Suitable for
 Three‑phase residential distribution boards
 Small commercial or light industrial panels
 Protection of circuits supplying motors, heaters, and fixed appliances
 Applications where detection of pulsating DC leakage is required (Type A)
Key specifications
 Rated current: 25 A
 Number of poles: 4 (4M)
 Residual current sensitivity: 30 mA, Type A
 Short‑circuit breaking capacity: 6 kA
 Function: combined overcurrent switching and residual current (earth‑fault) protection
How to use
Install the differential circuit breaker in a compatible DIN‑rail distribution board following local electrical codes and the manufacturer’s installation instructions. Connect the line and neutral conductors and the protective earth as required for a 4‑pole device, ensuring correct phase sequence for three‑phase systems. Set up the circuit wiring so that all protected conductors pass through the device. Test the residual current function after installation using the built‑in test button or a suitable test instrument to confirm correct operation and trip threshold.
Usage recommendations
Use this device where 30 mA residual current detection is appropriate for personal protection and where pulsating DC leakage may occur. Verify compatibility with upstream protection and the installation’s short‑circuit current levels. Regularly test the residual current function (typically monthly) and schedule professional inspection after any significant electrical work.

## FAQ

### How much does the Hager CDA425J differential breaker 25A 4‑pole 30mA cost, and is it available for purchase?

The price is 48.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 97 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 21.07.2026 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 Hager 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 Hager 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/12130989/67676296_large.webp