# Circuit breaker Schneider Electric A9Z05440 40 A 4-pole industrial protection device

**URL:** https://aio.lv/en/product--schneider-electric-a9z05440--4909541
**Data updated:** 2026-03-20 09:45 (EET)
**Category:** Power Sockets
**Manufacturer:** Schneider Electric
**Manufacturer code:** A9Z05440
**EAN:** 3606480473913
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 44.49 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 36.77 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--schneider-electric-a9z05440--4909541

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Schneider Electric A9Z05440 is a 4-pole circuit breaker with a rated current of 40 A designed for industrial and commercial electrical protection. It provides overcurrent/disconnection protection across four poles, suitable for three-phase systems with neutral. Intended for panel mounting, it is used to protect circuits, equipment and distribution lines in electrical installations.

## Long description

Schneider Electric A9Z05440 is a 4-pole circuit breaker rated at 40 A, designed for industrial and commercial electrical protection. It provides overcurrent and disconnection protection across four poles, making it suitable for three-phase systems with neutral. The device is intended for panel mounting and is used to protect circuits, equipment and distribution lines in electrical installations where coordinated protection and reliable disconnection are required.
Advantages
The A9Z05440 offers stable thermal-magnetic protection for overload and short-circuit conditions while ensuring reliable disconnection when required. Its 4-pole configuration enables simultaneous protection of three phases and neutral, which simplifies wiring and improves safety in three-phase installations. The breaker is compatible with standard panel mounting and integrates with common industrial electrical distribution systems, providing predictable trip characteristics and consistent performance.
Suitable for
 Three-phase industrial and commercial distribution panels with neutral
 Protection of motors, transformers and distribution circuits up to 40 A
 Feeder circuits and branch circuits in manufacturing plants and commercial buildings
 Applications requiring coordinated overcurrent protection and manual disconnection
Key specifications
 Poles: 4-pole configuration for three phases plus neutral
 Rated current: 40 A
 Protection type: thermal-magnetic overcurrent protection with manual disconnection
 Mounting: panel / distribution board mounting
 Suitable system: three-phase systems with neutral (TN, TT, IT as applicable per installation rules)
How to use
Install the breaker in a compatible distribution panel according to local electrical codes and the system designer's instructions. Ensure proper tightening of terminal connections, correct phase and neutral wiring, and appropriate coordination with upstream and downstream protective devices. After installation, verify operation by performing functional tests under no-load conditions and check trip settings or coordination with other protective devices. Only qualified electricians should install, commission and maintain the device.
Usage recommendations
Choose this 4-pole 40 A breaker when simultaneous protection of three phases and neutral is required; coordinate its use with upstream protection devices and perform regular inspections for secure connections and correct operation.

## Specifications

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.36 kg |

## FAQ

### How much does the Circuit breaker Schneider Electric A9Z05440 40A 4P cost, and is it available for purchase?

The price is 44.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1017 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 14.07.2026 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 Electric 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 Electric 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: weight, 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/4909541/30584686_large.webp