# Hager CDS440D Residual Current Circuit Breaker 40A 30mA Type A 4-Pole

**URL:** https://aio.lv/en/product--hager-cds440d--3800544
**Data updated:** 2026-05-18 02:50 (EEST)
**Category:** Power Sockets
**Manufacturer:** Hager
**Manufacturer code:** CDS440D
**EAN:** 3250611610861
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 63.49 €
**Prices and availability valid until:** 2026-07-08 23:59
**Price without VAT (21%):** 52.47 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hager-cds440d--3800544

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

The Hager CDS440D is a 4-pole residual current circuit breaker (RCCB) designed for electrical safety. It features a 40A rated current, 30mA sensitivity, and Type A protection for AC and pulsating DC residual currents. Equipped with QuickConnect technology, this device ensures reliable circuit protection in residential and commercial electrical installations, operating at 230/400V.

## Long description

The Hager CDS440D is a high-quality 4-pole residual current circuit breaker (RCCB) engineered to provide essential electrical safety in modern distribution boards. Designed for both residential and commercial applications, this device monitors electrical circuits to detect leakage currents, automatically disconnecting the power supply if a fault is identified. With its 40A rated current and 30mA sensitivity, it offers reliable protection against electric shock and fire hazards caused by insulation faults.
Advantages
This RCCB features advanced Type A protection, which is capable of detecting both standard AC residual currents and pulsating DC residual currents, making it suitable for modern electronic equipment. The integration of QuickConnect technology significantly simplifies the installation process, allowing for faster and more secure wire connections without the need for traditional screw terminals. Its robust construction ensures long-term operational reliability and consistent performance in various electrical environments.
Suitable for
Residential electrical distribution boards
Commercial building power systems
Protection of circuits with electronic components
Installations requiring Type A residual current detection
When it may not be suitable
This device is not intended for use in circuits exceeding its 40A rated current capacity, as this could lead to overheating and failure. It is also not a substitute for a miniature circuit breaker (MCB), as it does not provide protection against overloads or short circuits.
Key specifications
Rated current: 40A
Sensitivity: 30mA
Number of poles: 4
Protection type: Type A
Operating voltage: 230/400V
Connection technology: QuickConnect
How to use
The Hager CDS440D should be installed by a qualified electrician within a standard DIN-rail distribution board. Ensure that the supply voltage matches the device specifications before mounting. The QuickConnect terminals allow for efficient cable insertion, ensuring a firm and vibration-resistant connection. Once installed, the device should be tested using the integrated test button to verify its tripping mechanism is functioning correctly.
What to consider before purchase
Verify that the 40A rating is sufficient for your circuit load
Ensure your installation requires a 4-pole device for 3-phase systems
Confirm that Type A protection meets your specific safety requirements
Usage recommendations
Regularly test the residual current circuit breaker using the test button at least every six months to ensure the mechanical parts remain operational and the device continues to provide effective protection.

## Specifications

| Feature | Value |
|---|---|
| Storage temperature (T-T) | -55 - 70 |
| Input current | 40 |

### Power

| Feature | Value |
|---|---|
| Input voltage | 230/400 |

### Features

| Feature | Value |
|---|---|
| Operating temperature (T-T) | -25 - 40 |
| Number of poles | 4 |

### Design

| Feature | Value |
|---|---|
| Product colour | Grey, White |

## FAQ

### How much does the Hager CDS440D Residual Current Circuit Breaker 40A cost, and is it available for purchase?

The price is 63.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 27 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 02.07.2026 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

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

When making a choice, we recommend paying attention to the key features: product colour, 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

https://aio.lv/img/cache/product/3800544/58566515_large.webp