# LSiS TS400N Molded Case Circuit Breaker, 3-Pole, 300A, ATU Protection, 50kA

**URL:** https://aio.lv/en/product--lsis-ts400n-atu-300a-3p--12446990
**Data updated:** 2026-05-18 02:41 (EEST)
**Category:** Smart Switches
**Manufacturer:** LSiS
**Manufacturer code:** TS400N ATU 300A 3P
**EAN:** 8809513490788
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 548.99 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 453.71 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lsis-ts400n-atu-300a-3p--12446990

## 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 LSiS TS400N is a high-performance 3-pole molded case circuit breaker designed for reliable electrical distribution and circuit protection. Featuring a 300A rated current and an ATU thermal-magnetic trip unit, it provides robust short-circuit protection with a 50kA breaking capacity. This industrial-grade device is ideal for safeguarding electrical systems in commercial and industrial applications, ensuring operational safety and efficiency.

## Long description

The LSiS TS400N is a high-performance 3-pole molded case circuit breaker engineered for reliable electrical distribution and comprehensive circuit protection. Designed for demanding industrial environments, this device features a 300A rated current and an advanced thermal-magnetic trip unit, ensuring consistent performance and safety for electrical infrastructure. With a robust 50kA breaking capacity, it effectively manages short-circuit events, preventing damage to downstream equipment and maintaining system integrity.
Advantages
This molded case circuit breaker stands out due to its durable construction and high breaking capacity, which provides superior protection against electrical faults. The integrated thermal-magnetic trip unit offers precise control over current flow, allowing for reliable operation under varying load conditions. Its compact 3-pole design facilitates efficient installation in standard electrical panels, while the high-quality materials ensure a long service life even in intensive commercial or industrial settings.
Suitable for
Industrial power distribution systems
Commercial building electrical panels
Protection of heavy machinery and motors
Main circuit protection in switchgear assemblies
This device may not be suitable for residential applications where space is extremely limited or where the current requirements are significantly lower than the 300A rating. It is also not intended for use in environments with extreme moisture or corrosive gases unless housed in an appropriately rated protective enclosure.
Key specifications
Number of poles: 3
Rated current: 300A
Breaking capacity: 50kA
Trip unit type: Thermal-magnetic (ATU)
Design: Molded case
Installation should be performed by a qualified electrician in accordance with local electrical codes. The breaker is mounted within a distribution board or enclosure, ensuring all terminal connections are tightened to the manufacturer's specified torque settings to prevent overheating. Once installed, the device can be manually operated via the front-facing toggle switch to connect or disconnect the circuit as needed.
What to consider before purchase
Verify that the 300A rating matches your system load requirements
Ensure the 50kA breaking capacity is sufficient for your installation's short-circuit current levels
Check the physical dimensions to ensure compatibility with your existing panel space
Confirm that the 3-pole configuration meets your specific circuit needs
Regular inspection of the terminal connections and the operational status of the trip unit is recommended to ensure continued safety and performance of the electrical system.

## FAQ

### How much does the LSiS TS400N Molded Case Circuit Breaker 3P 300A cost, and is it available for purchase?

The price is 548.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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, Installment. All transactions are 100% secure and encrypted.

### Can LSiS TS400N Molded Case Circuit Breaker 3P 300A be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 LSiS 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 LSiS 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/12446990/68750079_large.webp