# EATON AZ-4-B40 Miniature Circuit Breaker, 4-Pole, B-Characteristic, 40A, 25kA

**URL:** https://aio.lv/en/product--eaton-174535--12465235
**Data updated:** 2026-05-18 09:44 (EEST)
**Category:** Power Sockets
**Manufacturer:** EATON
**Manufacturer code:** 174535
**EAN:** 4015081709915
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 98.49 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 81.40 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eaton-174535--12465235

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

The EATON AZ-4-B40 is a high-performance 4-pole miniature circuit breaker designed for reliable electrical circuit protection. With a 40A rated current, B-tripping characteristic, and a 25kA breaking capacity, this device ensures safety in industrial and commercial power distribution systems. It effectively prevents damage from overloads and short circuits, providing robust performance for AC electrical installations.

## Long description

The EATON AZ-4-B40 is a high-performance 4-pole miniature circuit breaker engineered to provide reliable protection for electrical circuits in demanding industrial and commercial environments. This device is designed to safeguard power distribution systems by effectively interrupting current flow during overloads or short circuits, thereby preventing potential damage to connected equipment and infrastructure. With its robust construction and high breaking capacity, it serves as a critical component for maintaining the integrity and safety of AC electrical installations.
Advantages
This circuit breaker offers exceptional reliability and durability, ensuring consistent performance even under heavy electrical loads. Its 4-pole configuration allows for the simultaneous disconnection of all phases, providing comprehensive protection for three-phase systems with a neutral conductor. The B-tripping characteristic makes it particularly suitable for applications where moderate inrush currents are expected, while the high 25kA breaking capacity ensures that the device can safely handle significant fault currents without compromising the safety of the electrical network.
Suitable for
Industrial power distribution panels
Commercial building electrical systems
Protection of three-phase motors and heating equipment
General AC electrical installations requiring high fault current protection
When it may not be suitable
This device is not intended for use in DC electrical systems, as it is specifically designed for AC applications. Furthermore, it may not be appropriate for circuits with extremely high inrush currents, where a C or D tripping characteristic would be required to prevent nuisance tripping.
Key specifications
Number of poles: 4
Rated current: 40A
Tripping characteristic: B
Breaking capacity: 25kA
System type: AC
How to use
The circuit breaker should be installed by a qualified electrician in accordance with local electrical codes and safety regulations. It is designed for mounting on a standard DIN rail within a distribution board or enclosure. Ensure that the supply cables are securely connected to the input terminals and that the load cables are properly attached to the output terminals, maintaining the correct torque settings as specified by the manufacturer. Once installed, the device can be manually switched on or off using the toggle lever on the front panel.
What to consider before purchase
Verify that the 40A rated current matches the requirements of your specific circuit load.
Ensure that the 25kA breaking capacity is sufficient for the prospective short-circuit current at the point of installation.
Confirm that the B-characteristic is appropriate for the type of equipment being protected.
Check the physical dimensions of your distribution board to ensure adequate space for a 4-pole device.
Usage recommendations: Regularly inspect the circuit breaker for signs of physical damage or overheating. It is recommended to perform periodic functional testing to ensure the mechanism remains operational and that the device continues to provide the intended level of protection for your electrical installation.

## FAQ

### How much does the EATON AZ-4-B40 4-Pole Miniature Circuit Breaker 40A cost, and is it available for purchase?

The price is 98.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 07.07.2026 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-4-B40 4-Pole Miniature Circuit Breaker 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/12465235/68766783_large.webp