# Hager CDA440D residual current circuit breaker Type A 4-pole 40A 230/400V 500V

**URL:** https://aio.lv/en/product--hager-cda440d--1832820
**Data updated:** 2026-07-24 04:29 (EEST)
**Category:** Other goods
**Manufacturer:** Hager
**Manufacturer code:** CDA440D
**EAN:** 3250611610076
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 53.49 €
**Prices and availability valid until:** 2026-08-23 23:59
**Price without VAT (21%):** 44.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hager-cda440d--1832820

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.08.2026 | free |
| Pickup points | 12.08.2026 | 1.79 EUR |
| Courier delivery to door | 12.08.2026 | 4.99 EUR |

## Summary description

Hager CDA440D residual current circuit breaker features a Type A design with a 4-pole configuration and a 40 A rated current. Designed for input voltages of 230/400 V and a coil voltage of 500 V, this device provides reliable electrical protection for residential and commercial power distribution installations.

## Long description

The Hager CDA440D residual current circuit breaker is designed to provide reliable electrical protection in residential and commercial power distribution installations. Featuring a Type A design with a 4-pole configuration and a 40 A rated current, this device is engineered to handle input voltages of 230/400 V and a coil voltage of 500 V. It effectively safeguards electrical circuits and users by quickly disconnecting the power supply when residual currents are detected.
Advantages
This residual current circuit breaker offers dependable safety for various electrical setups by instantly interrupting fault currents. Its Type A classification ensures accurate detection of both sinusoidal AC residual currents and pulsating DC residual currents. The 4-pole configuration makes it suitable for comprehensive multi-phase distribution networks, while the robust Hager construction guarantees long-term operational stability and safety compliance.
Suitable for
Residential electrical distribution boards
Commercial building power systems
Multi-phase electrical installations requiring Type A protection
Sub-distribution boards for enhanced circuit safety
When it may not be suitable
This device is not designed for single-phase circuits that require only a 2-pole configuration. Additionally, it may not be appropriate for specialized industrial applications requiring Type B residual current devices that detect smooth DC residual currents.
Key specifications
Type A residual current circuit breaker
4-pole configuration
40 A rated current
Input voltages of 230/400 V
Coil voltage of 500 V
How to use
The device must be installed exclusively by a qualified electrician in compliance with current electrical safety regulations and wiring standards. It is mounted onto a standard DIN rail within a distribution enclosure. Ensure the power supply is completely switched off before installation, wiring, or performing any maintenance work on the electrical panel.
What to consider before purchase
Verify that your electrical system requires a 4-pole, 40 A device
Check if Type A residual current protection matches your specific installation requirements
Ensure compatibility with your existing distribution board and DIN rail mounting space
Usage recommendations
Test the residual current circuit breaker periodically using the integrated test button to ensure correct mechanical and electrical functionality. Regular inspections help maintain optimal safety levels in your power distribution network.

## Specifications

| Feature | Value |
|---|---|
| Type | Type A |
| Storage temperature (T-T) | -55 - 70 |
| Operating temperature (T-T) | -25 - 40 |
| Height | 83 mm |
| Input voltage | 230/400 |
| Width | 70 mm |
| Depth | 70 mm |
| Product colour | Blue, White |
| Rated current | 40 A |
| Number of poles | 4 |
| Coil voltage | 500 V |

## FAQ

### How much does the Hager CDA440D Circuit Breaker cost, and is it available for purchase?

The price is 53.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 500 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 07.08.2026 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/1832820/58097048_large.webp