# EATON AZ-3-D40 Miniature Circuit Breaker, 3-Pole, D-Curve, 40A, 25kA, AC

**URL:** https://aio.lv/en/product--eaton-174518--12448928
**Data updated:** 2026-05-18 02:49 (EEST)
**Category:** Power Sockets
**Manufacturer:** EATON
**Manufacturer code:** 174518
**EAN:** 4015081709748
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 186.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 154.54 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eaton-174518--12448928

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The EATON AZ-3-D40 is a high-performance 3-pole miniature circuit breaker designed for reliable electrical circuit protection. With a 40A rated current, D-type tripping characteristic, and 25kA breaking capacity, it is suitable for industrial and commercial applications requiring robust short-circuit and overload protection in AC systems. This device ensures safety and operational continuity in demanding electrical installations.

## Long description

The EATON AZ-3-D40 is a high-performance 3-pole miniature circuit breaker engineered to provide reliable protection for electrical systems in industrial and commercial environments. This device is specifically designed to handle high inrush currents, making it an essential component for safeguarding electrical circuits against overloads and short circuits in demanding AC installations.
Advantages
This circuit breaker offers exceptional durability and operational reliability under heavy electrical loads. Its D-curve tripping characteristic allows it to tolerate high starting currents, which is critical for equipment such as large motors or transformers. With a high breaking capacity of 25kA, it ensures effective fault clearance, thereby protecting downstream equipment and minimizing the risk of electrical damage during a short-circuit event.
Suitable for
Industrial machinery and motor control centers
Commercial building electrical distribution boards
Systems with high inductive loads
Applications requiring robust short-circuit protection
When it may not be suitable
This device is not intended for residential lighting or standard household outlet circuits, as the D-curve tripping characteristic is specifically tuned for high-inrush applications. Using it in environments without significant inductive loads may result in delayed protection during minor faults.
Key specifications
Number of poles: 3
Rated current: 40A
Tripping characteristic: D-curve
Breaking capacity: 25kA
System type: AC
How to use
The EATON AZ-3-D40 should be installed by a qualified electrician into a standard DIN-rail distribution board. Ensure that the supply cables are properly sized for a 40A load and that all terminal connections are tightened to the manufacturer's specified torque to prevent overheating. Once installed, the device can be manually switched on or off using the front-mounted toggle, and it will automatically trip to the off position if an overload or short circuit is detected.
What to consider before purchase
Verify that the 40A rating matches your circuit requirements
Ensure the D-curve characteristic is appropriate for your specific load type
Confirm that the 25kA breaking capacity meets the short-circuit current levels of your installation
Check available space in your distribution board for a 3-pole device
Usage recommendations
For optimal performance and safety, regularly inspect the terminal connections for tightness and ensure the device is kept free from dust and moisture. Do not attempt to bypass the tripping mechanism or use the breaker as a primary manual switch for frequent load cycling.

## FAQ

### How much does the EATON AZ-3-D40 Miniature Circuit Breaker 3P 40A cost, and is it available for purchase?

The price is 186.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 08.07.2026 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 EATON AZ-3-D40 Miniature Circuit Breaker 3P 40A 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 EATON 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 EATON 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/12448928/68751814_large.webp