# Hager MBN340E 3-Pole Miniature Circuit Breaker 40A B-Curve 6kA

**URL:** https://aio.lv/en/product--hager-mbn340e--3128340
**Data updated:** 2026-05-18 02:54 (EEST)
**Category:** Power Sockets
**Manufacturer:** Hager
**Manufacturer code:** MBN340E
**EAN:** 3250614313103
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 39.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 32.64 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hager-mbn340e--3128340

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The Hager MBN340E is a 3-pole miniature circuit breaker designed for reliable electrical circuit protection. It features a 40A rated current, B-type tripping characteristic, and a 6kA breaking capacity. Suitable for AC systems with an input voltage range of 230-400V, this device ensures safety in residential and commercial electrical installations by preventing overloads and short circuits.

## Long description

The Hager MBN340E is a high-quality 3-pole miniature circuit breaker engineered to provide robust protection for electrical circuits in both residential and commercial environments. With a rated current of 40A and a B-type tripping characteristic, this device is designed to detect and interrupt overloads and short circuits effectively, ensuring the safety of your electrical infrastructure and connected appliances.
Advantages
This circuit breaker stands out due to its reliable performance and durable construction, which are hallmarks of the Hager brand. The B-curve tripping characteristic makes it particularly effective for circuits with low inrush currents, providing a balanced approach to protection. Its 6kA breaking capacity ensures that the device can safely handle significant fault currents, minimizing the risk of damage to the electrical system. The 3-pole configuration allows for the simultaneous disconnection of three phases, making it an essential component for three-phase power distribution systems.
Suitable for
Residential electrical distribution boards
Commercial building power systems
Protection of lighting circuits
General purpose three-phase electrical installations
This device may not be suitable for circuits with high inrush currents, such as those powering large electric motors or transformers, where a C-curve or D-curve breaker would be more appropriate to prevent nuisance tripping. It is also not intended for use in DC electrical systems.
Key specifications
Number of poles: 3
Rated current: 40A
Tripping characteristic: B-curve
Breaking capacity: 6kA
Operating voltage: 230/400V AC
The Hager MBN340E is designed for installation on a standard DIN rail within a distribution board. It should be installed by a qualified electrician in accordance with local electrical regulations. Ensure that the supply is disconnected before beginning the installation process and verify that the wire gauge is appropriate for a 40A load.
What to consider before purchase
Verify that the 40A rating matches your circuit requirements
Ensure the B-curve characteristic is suitable for your specific load type
Check that your distribution board has sufficient space for a 3-pole module
Confirm compatibility with your existing electrical system voltage
Usage recommendations: Regularly inspect the circuit breaker for any signs of physical damage or discoloration. It is recommended to perform a periodic functional check to ensure the tripping mechanism remains operational. If the breaker trips, investigate the cause of the overload or short circuit before resetting the switch.

## Specifications

| Feature | Value |
|---|---|
| Quantity | 1 |
| AC input voltage | 230 - 400 |

### Technical details

| Feature | Value |
|---|---|
| Sustainability certificates | RoHS |

## FAQ

### How much does the Hager MBN340E 3-Pole Circuit Breaker 40A cost, and is it available for purchase?

The price is 39.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 35 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 06.07.2026 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 Hager 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 Hager 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/3128340/58247643_large.webp