# Hager MC340A Circuit Breaker 3-Pole 40A C-Curve 6kA

**URL:** https://aio.lv/en/product--hager-mc340a--10856266
**Data updated:** 2026-06-10 09:30 (EEST)
**Category:** Other goods
**Manufacturer:** Hager
**Manufacturer code:** MC340A
**EAN:** 3250614337529
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 19.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 16.52 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hager-mc340a--10856266

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Friday | free |
| Pickup points | 26.06.2026 | 1.99 EUR |
| Courier delivery to door | 26.06.2026 | 4.99 EUR |

## Summary description

The Hager MC340A is a high-quality 3-pole miniature circuit breaker designed for reliable electrical circuit protection. With a 40A rated current, C-curve tripping characteristic, and 6kA breaking capacity, it is ideal for industrial and residential distribution boards. This device ensures safety by preventing overloads and short circuits in three-phase electrical systems.

## Long description

The Hager MC340A is a professional-grade 3-pole miniature circuit breaker engineered to provide robust protection for electrical circuits. Designed for integration into both residential and industrial distribution boards, this device effectively monitors current flow to prevent damage from overloads and short circuits. Its 40A rated current and C-curve tripping characteristic make it a reliable component for managing three-phase electrical systems, ensuring consistent performance and safety in demanding environments.
Advantages
This circuit breaker offers high operational reliability and durability, meeting stringent safety standards for electrical installations. The C-curve characteristic provides a balanced response to current surges, making it suitable for a wide range of applications including inductive loads. Its compact design allows for efficient space utilization within standard distribution panels, while the 6kA breaking capacity ensures that the device can safely interrupt fault currents, protecting downstream equipment and wiring from potential electrical hazards.
Suitable for
Three-phase residential electrical distribution boards
Industrial machinery and equipment power supply
Commercial building electrical infrastructure
Protection of circuits with moderate inrush currents
When it may not be suitable
This circuit breaker is not intended for use in circuits requiring a different tripping characteristic, such as B-curve for purely resistive loads or D-curve for high-inrush equipment like large motors. It is also not suitable for single-phase applications where a 1-pole or 2-pole breaker would be more appropriate.
Key specifications
Number of poles: 3
Rated current: 40A
Tripping characteristic: C-curve
Breaking capacity: 6kA
Mounting type: DIN rail
How to use
The Hager MC340A is designed for installation on a standard DIN rail within an electrical distribution enclosure. Installation should be performed by a qualified electrician in accordance with local electrical codes and safety regulations. The device is connected by securing the supply wires to the input terminals and the load wires to the output terminals, ensuring all connections are tightened to the manufacturer's specified torque to prevent overheating.
What to consider before purchase
Verify that the 40A rating matches the requirements of your circuit load.
Ensure the 6kA breaking capacity is sufficient for the prospective fault current at the installation point.
Confirm that the 3-pole configuration is compatible with your three-phase system layout.
Check available space on the DIN rail within your distribution board.
Usage recommendations
Regularly inspect the circuit breaker for signs of thermal damage or loose connections. It is recommended to perform periodic testing of the installation to ensure the device remains functional and continues to provide the necessary protection for your electrical system.

## FAQ

### How much does the Hager MC340A 3-Pole 40A Circuit Breaker cost, and is it available for purchase?

The price is 19.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 36 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 Friday 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/10856266/60230760_large.webp