# Hager CFA440J Residual Current Circuit Breaker 4P 40A 300mA Type A

**URL:** https://aio.lv/en/product--hager-cfa440j--3128319
**Data updated:** 2026-05-18 02:54 (EEST)
**Category:** Power Sockets
**Manufacturer:** Hager
**Manufacturer code:** CFA440J
**EAN:** 3250611619703
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 74.99 €
**Prices and availability valid until:** 2026-08-01 23:59
**Price without VAT (21%):** 61.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hager-cfa440j--3128319

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.07.2026 | free |
| Pickup points | 27.07.2026 | 1.89 EUR |
| Courier delivery to door | 27.07.2026 | 4.99 EUR |

## Summary description

The Hager CFA440J is a high-quality 4-pole residual current circuit breaker (RCCB) designed for electrical safety. It features a 40A rated current and 300mA sensitivity, classified as Type A for detecting AC and pulsating DC residual currents. This device is essential for protecting circuits against earth leakage faults in residential and commercial electrical installations, ensuring reliable performance and enhanced safety standards.

## Long description

The Hager CFA440J is a professional-grade 4-pole residual current circuit breaker (RCCB) engineered to provide robust electrical protection in modern installations. This device is specifically designed to monitor electrical circuits for earth leakage faults, automatically disconnecting the power supply when a residual current is detected. By incorporating advanced Type A technology, it ensures reliable detection of both alternating sinusoidal residual currents and pulsating direct residual currents, making it a versatile solution for diverse electrical environments.
Advantages
The primary benefit of the Hager CFA440J lies in its high level of operational reliability and safety. As a Type A device, it offers broader protection than standard AC-type breakers, covering a wider range of potential fault currents often found in modern electronic equipment. Its 4-pole configuration allows for seamless integration into three-phase electrical systems, providing comprehensive coverage for all phases and the neutral conductor. The robust construction ensures long-term durability and consistent performance under standard operating conditions, contributing to the overall safety of residential and commercial electrical infrastructures.
Suitable for
Residential electrical distribution boards
Commercial building power systems
Protection of circuits with electronic components
Three-phase electrical installations
This device is not intended for use in circuits where the residual current is purely direct current, as it is specifically calibrated for AC and pulsating DC signals. It should not be used as a substitute for a miniature circuit breaker (MCB) as it does not provide protection against overloads or short circuits.
Key specifications
Number of poles: 4
Rated current: 40A
Residual current sensitivity: 300mA
Type: A
Installation of the Hager CFA440J must be performed by a qualified electrician in accordance with local electrical regulations. The device is typically mounted on a standard DIN rail within a distribution board. Ensure that all connections are tightened to the specified torque to prevent overheating and ensure proper electrical contact. Regular testing using the integrated test button is recommended to verify the mechanical functionality of the tripping mechanism.
What to consider before purchase
Verify that the 40A rated current matches your circuit requirements
Ensure the 300mA sensitivity is appropriate for your specific safety application
Check that your installation requires a 4-pole device
Confirm compatibility with your existing distribution board layout
For optimal safety, perform a manual test of the residual current circuit breaker at least every six months by pressing the test button to ensure the device trips correctly.

## Specifications

| Feature | Value |
|---|---|
| Quantity | 1 |

### Technical details

| Feature | Value |
|---|---|
| Sustainability certificates | RoHS |

## FAQ

### How much does the Hager CFA440J Residual Current Circuit Breaker cost, and is it available for purchase?

The price is 74.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 28 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 22.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Hager CFA440J Residual Current Circuit Breaker be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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/3128319/58247634_large.webp