# Eaton FAZ-B4/2 Miniature Circuit Breaker, 2-Pole, B-Curve, 4A, 15kA

**URL:** https://aio.lv/en/product--eaton-278726--12460142
**Data updated:** 2026-05-18 09:33 (EEST)
**Category:** Power Sockets
**Manufacturer:** EATON
**Manufacturer code:** 278726
**EAN:** 4015082787264
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 58.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 48.75 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eaton-278726--12460142

## 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 FAZ-B4/2 is a high-performance 2-pole miniature circuit breaker designed for reliable electrical circuit protection. Featuring a B-curve tripping characteristic and a 4A rated current, it offers a 15kA breaking capacity. This device is ideal for residential and commercial electrical installations, ensuring safety by preventing overloads and short circuits in distribution systems.

## Long description

The Eaton FAZ-B4/2 is a high-performance 2-pole miniature circuit breaker engineered to provide reliable protection for electrical circuits in various environments. With a rated current of 4A and a B-curve tripping characteristic, this device is specifically designed to detect and interrupt overloads and short circuits efficiently. It features a robust breaking capacity of 15kA, making it a dependable component for modern electrical distribution systems.
Advantages
This miniature circuit breaker stands out due to its high breaking capacity, which ensures safety even in demanding electrical installations. The B-curve characteristic provides a precise response to overcurrents, protecting sensitive equipment from damage. Its 2-pole design allows for the simultaneous disconnection of both phase and neutral conductors, enhancing overall system safety and maintenance convenience. The compact construction facilitates easy integration into standard distribution boards.
Suitable for
Residential electrical distribution boards
Commercial building power systems
Protection of lighting circuits
Control circuits requiring low current ratings
When it may not be suitable
This circuit breaker is not intended for high-inrush current applications, such as large motor starting or heavy inductive loads, where a C or D curve characteristic would be required to prevent nuisance tripping. It is also not suitable for systems exceeding its 4A rated current capacity.
Key specifications
Number of poles: 2
Rated current: 4A
Tripping characteristic: B-curve
Breaking capacity: 15kA
Mounting type: DIN rail
How to use
The device is designed for installation on a standard DIN rail within an electrical distribution enclosure. Ensure that the power supply is disconnected before installation. Secure the breaker firmly onto the rail and connect the supply and load cables to the appropriate terminals, ensuring that all connections are tightened to the manufacturer's specified torque. Once installed, the breaker can be switched on manually using the toggle lever.
What to consider before purchase
Verify that the 4A current rating matches your circuit requirements.
Ensure the B-curve characteristic is appropriate for your specific load type.
Check the available space in your distribution board for a 2-pole module.
Confirm that the 15kA breaking capacity meets the short-circuit current levels of your installation.
Usage recommendations
Regularly inspect the circuit breaker for any signs of physical damage or discoloration. It is recommended to test the mechanical operation of the toggle lever periodically to ensure smooth functionality. Always consult a qualified electrician for installation and maintenance to ensure compliance with local electrical safety regulations.

## FAQ

### How much does the Eaton FAZ-B4/2 Miniature Circuit Breaker 2P 4A 15kA cost, and is it available for purchase?

The price is 58.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 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. 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/12460142/68762115_large.webp