# Circuit breaker accessory Hager KDN363B — 3-phase connection rail / busbar, for 57 modules

**URL:** https://aio.lv/en/product--hager-kdn363b--1520459
**Data updated:** 2026-04-27 22:25 (EEST)
**Category:** Home & DIY Accessories
**Manufacturer:** Hager
**Manufacturer code:** KDN363B
**EAN:** 3250613740962
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 37.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 31.40 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hager-kdn363b--1520459

## 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 | 9.78 EUR |

## Summary description

Hager KDN363B is a circuit breaker accessory designed as a 3-phase connection rail (busbar) for mounting across distribution boards with up to 57 modular positions. It provides a ready-made conductive link between breakers to simplify three-phase power distribution and streamline installation in residential and light-commercial electrical panels.

## Long description

Hager KDN363B is a circuit breaker accessory designed as a 3-phase connection rail (busbar) for distribution boards with up to 57 modular positions. It provides a prefabricated conductive link between breakers to facilitate three-phase power distribution and reduce wiring time during installation. The product is intended for use in residential and light-commercial electrical panels where standardized modular breakers are mounted side by side.
Advantages
The connection rail offers consistent electrical contact across three phases and simplifies the common supply of multiple breakers without individual conductor runs. Its modular length matches enclosures with up to 57 module spaces, reducing the need for custom busbar fabrication. The accessory is compatible with Hager modular devices and is intended to streamline installation while maintaining an organized panel layout.
Suitable for (tasks / use cases)
 Establishing a three-phase common supply for modular circuit breakers in distribution boards
 Retrofit or new installations in residential and small commercial electrical panels
 Situations where quick, repeatable connections between breakers are required to save time
When it may not be suitable
This connection rail is intended for use with modular breakers and enclosures compatible with a 57-module length; it may not be appropriate for custom panels, non-modular switchgear, or installations requiring bespoke busbars with different mechanical layouts. For applications requiring higher current ratings, different phase spacing, or additional protective features, a different busbar design or a dedicated distribution solution may be necessary.
Key specifications
 Phase configuration: 3-phase busbar
 Compatibility: fits distribution boards up to 57 modular positions
 Function: conductive connection between modular circuit breakers
 Mounting style: intended for side-by-side modular breaker installation
 Purpose: simplifies three-phase power distribution and installation workflow
How to use
Mount the Hager 3-phase connection rail across the row of modular breakers in a distribution board with up to 57 module positions, following the enclosure manufacturer's mounting guidelines and Hager compatibility recommendations. Ensure all breakers are in the OFF position and the supply is isolated before installing. Position the rail so that its contact points align with the breaker terminals, secure it per the panel design, and verify mechanical stability and electrical continuity before restoring power. Installation should be performed by a qualified electrician in accordance with local electrical codes.
What to consider before purchase
 Confirm the distribution board module count and that a 57-module length is suitable
 Verify compatibility with the specific type and model of modular breakers used
 Check required current rating and phase arrangement for your installation
 Ensure installation will be performed by a qualified professional and meets local regulations
Usage recommendations
Use the Hager KDN363B busbar in standard modular panels to reduce wiring time and maintain uniform connections. Always isolate power before fitting, verify alignment with breaker contacts, and perform continuity and insulation checks after installation.

## Specifications

| Feature | Value |
|---|---|
| Compatible products | MBN306
MBN310
MBN313
MBN316
MBN320 |
| Rated current | 63 A |
| Number of elements | 57 |

### Design

| Feature | Value |
|---|---|
| Product colour | Grey |

## FAQ

### How much does the Hager KDN363B circuit breaker connection rail cost, and is it available for purchase?

The price is 37.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 80 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/1520459/57989920_large.webp