# Residual Current Relay Hager CD426J — 4-pole 25 A, 30 mA sensitivity

**URL:** https://aio.lv/en/product--hager-cd426j--11381700
**Data updated:** 2026-04-24 17:42 (EEST)
**Category:** Power Sockets
**Manufacturer:** Hager
**Manufacturer code:** CD426J
**EAN:** 3250611616375
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 48.99 €
**Prices and availability valid until:** 2026-08-09 23:59
**Price without VAT (21%):** 40.49 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hager-cd426j--11381700

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.07.2026 | free |
| Pickup points | 22.07.2026 | 1.89 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

Hager CD426J is a residual (current leakage) relay designed for AC systems, featuring four poles and a rated current of 25 A with 30 mA residual-current sensitivity. It detects earth leakage and trips circuits to protect against electric shock and fire risk. Suited for distribution boards, industrial panels and residential safety applications.

## Long description

Hager CD426J is a residual current relay for AC systems with four poles and a rated current of 25 A and a residual-current sensitivity of 30 mA. It is designed to detect earth leakage and initiate circuit interruption to reduce the risk of electric shock and fire. The relay is intended for installation in distribution boards, industrial control panels and residential electrical installations where residual-current protection is required.
Advantages
The device provides reliable detection of alternating earth leakage currents at a 30 mA sensitivity level, enabling timely disconnection of faulty circuits. Its four-pole configuration allows protection of three-phase systems with neutral, and the 25 A rated current matches common branch and load capacities. The relay’s compact form factor facilitates mounting in standard electrical enclosures and panels while maintaining clear functional separation between phases and neutral for safer operation.
Suitable for
 Protection of three-phase mains with neutral in small commercial or industrial panels
 Residual-current protection in residential distribution boards for living spaces
 Use in sub-distribution boards to protect individual circuits or groups of circuits
 Applications where 30 mA sensitivity is required for personal protection against electric shock
When it may not be suitable
This residual current relay is not intended for direct protection of large motors or high-current industrial loads that exceed its 25 A rated current. It is not a substitute for overcurrent protection devices where higher short-circuit or continuous current capabilities are necessary. Additionally, systems requiring other types of residual-current response (for example, DC-sensitive or selective/time-delayed RCDs) should use a device specifically designed for those characteristics.
Key specifications
 Poles: 4 (three phases + neutral)
 Rated current: 25 A
 Residual-current sensitivity (operating threshold): 30 mA
 Type of detection: AC residual current (alternating leakage)
 Intended installation: distribution boards and control panels
How to use
Install the relay in a suitable distribution board or panel according to applicable installation standards and local electrical codes. Connect the three phase conductors and neutral to the corresponding relay terminals, and wire the load circuits through the relay so that leakage currents pass through the sensing element. Ensure proper upstream overcurrent protection and coordinate with other protective devices in the installation. Commissioning should include functional testing by applying a test leakage or using the relay’s test facility, if provided, and verifying correct trip operation and upstream coordination.
What to consider before purchase
 Verify that the 25 A rated current is sufficient for the circuit(s) to be protected.
 Confirm 30 mA sensitivity meets required protection levels for personal safety and local regulations.
 Ensure compatibility with your distribution board layout and terminal wiring arrangement.
 Check whether AC-only sensitivity is adequate or if DC-sensitive or time-delayed residual protection is required.
Usage recommendations
Follow national wiring regulations and manufacturer installation instructions. Coordinate the relay with appropriate upstream overcurrent protection, perform routine testing after installation, and include the device in periodic safety inspections to ensure continued residual-current protection performance.

## FAQ

### How much does the Hager CD426J residual current relay 4P 25A 30mA cost, and is it available for purchase?

The price is 48.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 86 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 17.07.2026 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/11381700/65871860_large.webp