# Eaton FAZ-B40/3 Miniature Circuit Breaker, 3-Pole, B-Curve, 40A, 15kA

**URL:** https://aio.lv/en/product--eaton-278851--12449182
**Data updated:** 2026-05-18 02:52 (EEST)
**Category:** Power Sockets
**Manufacturer:** EATON
**Manufacturer code:** 278851
**EAN:** 4015082788513
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 55.99 €
**Prices and availability valid until:** 2026-07-27 23:59
**Price without VAT (21%):** 46.27 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eaton-278851--12449182

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

The Eaton FAZ-B40/3 is a high-performance 3-pole miniature circuit breaker designed for reliable overcurrent and short-circuit protection. Featuring a B-curve tripping characteristic and a 40A rated current, it offers a 15kA breaking capacity. This modular device is ideal for industrial and commercial electrical distribution systems, ensuring safety and operational continuity for connected circuits.

## Long description

The Eaton FAZ-B40/3 is a professional-grade 3-pole miniature circuit breaker engineered to provide robust protection against overcurrent and short-circuit conditions in electrical installations. With a rated current of 40A and a high breaking capacity of 15kA, this device ensures reliable performance in demanding environments. Its B-curve tripping characteristic makes it particularly effective for circuits with low inrush currents, providing a precise balance between operational safety and system uptime.
Advantages
This circuit breaker stands out due to its high-quality construction and adherence to international safety standards. The modular design allows for seamless integration into standard distribution boards, facilitating efficient installation and maintenance. By offering a 15kA breaking capacity, it provides superior protection for sensitive equipment compared to standard residential breakers. The B-curve characteristic ensures that the device reacts quickly to faults while minimizing nuisance tripping, which is essential for maintaining continuous operation in commercial and industrial settings.
Suitable for
Commercial electrical distribution panels
Industrial machinery power supply circuits
Lighting systems with low inrush current
General electrical infrastructure requiring high-capacity protection
This device may not be suitable for circuits with high inrush currents, such as those powering large motors or transformers, where a C or D curve characteristic would be required to prevent unwanted tripping. It is also not intended for use in environments exceeding its specified voltage or temperature ratings.
Key specifications
Number of poles: 3
Rated current: 40A
Tripping characteristic: B-curve
Breaking capacity: 15kA
Mounting type: DIN rail
Installation should be performed by a qualified electrician in accordance with local electrical codes. The device is designed to be snapped onto a standard 35mm DIN rail. Ensure that all wire connections are tightened to the manufacturer's specified torque settings to prevent overheating and ensure a secure electrical contact. Always verify that the supply voltage matches the rating of the circuit breaker before energizing the system.
What to consider before purchase
Verify that the 40A rating matches your circuit load requirements
Ensure the B-curve characteristic is appropriate for your specific application
Confirm that the 3-pole configuration is compatible with your distribution system
Check that the 15kA breaking capacity meets the fault level requirements of your installation
Usage recommendations
Regularly inspect the circuit breaker for signs of thermal damage or loose connections. It is recommended to perform periodic testing of the tripping mechanism to ensure continued reliability and safety of the electrical installation.

## FAQ

### How much does the Eaton FAZ-B40/3 Miniature Circuit Breaker 3P 40A cost, and is it available for purchase?

The price is 55.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 18 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 16.07.2026 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 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/12449182/68752038_large.webp