# Schneider A9Z05440 Residual Current Circuit Breaker, 4P, 40A, 30mA

**URL:** https://aio.lv/en/product--schneider-a9z05440--12505768
**Data updated:** 2026-06-10 09:26 (EEST)
**Category:** Power Sockets
**Manufacturer:** Schneider
**Manufacturer code:** A9Z05440
**EAN:** 3606480473913
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 37.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 31.40 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--schneider-a9z05440--12505768

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.89 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

The Schneider A9Z05440 is a 4-pole residual current circuit breaker designed for electrical safety and protection against leakage currents. With a rated current of 40A and a sensitivity of 30mA, this device effectively prevents electric shock and fire hazards in residential and commercial electrical installations. It ensures reliable circuit disconnection when a fault is detected, maintaining high standards of electrical system integrity.

## Long description

The Schneider A9Z05440 is a high-quality 4-pole residual current circuit breaker engineered to provide essential electrical safety in both residential and commercial environments. This device is specifically designed to detect and interrupt leakage currents, thereby protecting users from electric shocks and preventing potential fire hazards caused by insulation faults. By integrating this component into your electrical distribution board, you ensure a robust defense mechanism that maintains the integrity and safety of your entire electrical system.
Advantages
This residual current circuit breaker offers exceptional reliability and precision in fault detection. Its robust construction ensures long-term performance, while the 4-pole configuration allows for versatile application in three-phase electrical systems. The device is designed for seamless integration into standard electrical panels, providing a compact yet powerful solution for leakage protection that meets stringent safety standards.
Suitable for
Residential electrical distribution boards
Commercial building power systems
Protection of lighting and power circuits
Preventing fire hazards in electrical installations
When it may not be suitable
This device is designed for AC type leakage protection and may not be suitable for circuits where DC components or specific pulsating currents are present, as these may require different protection classes. It is also not intended for use in environments exceeding its rated current or voltage specifications.
Key specifications
Number of poles: 4P
Rated current: 40A
Sensitivity: 30mA
Voltage: 240V
Protection type: AC
Mounting: DIN rail
How to use
The device should be installed by a qualified electrician onto a standard DIN rail within an electrical distribution cabinet. Ensure that all wiring connections are tightened according to the manufacturer's torque specifications to prevent overheating. Once installed, the device can be tested using the integrated test button to verify that the tripping mechanism functions correctly. Regular testing is recommended to ensure ongoing protection.
What to consider before purchase
Verify that the 40A rating is sufficient for your circuit load
Ensure the 30mA sensitivity meets your specific safety requirements
Confirm compatibility with your existing DIN rail distribution board
Check the warranty terms for your specific user category
Usage recommendations
Regularly press the test button on the device at least every six months to confirm that the residual current protection mechanism remains operational and responsive to fault conditions.

## FAQ

### How much does the Schneider A9Z05440 Residual Current Circuit Breaker cost, and is it available for purchase?

The price is 37.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 9 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 01.07.2026 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 Schneider 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 Schneider 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/12505768/68846846_large.webp