# LSiS TS400N ATU Molded Case Circuit Breaker, 400A, 3-Pole, 50kA

**URL:** https://aio.lv/en/product--lsis-ts400n-atu-400a-3p--12450321
**Data updated:** 2026-05-18 02:47 (EEST)
**Category:** Power Sockets
**Manufacturer:** LSiS
**Manufacturer code:** TS400N ATU 400A 3P
**EAN:** 8809513490870
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The LSiS TS400N ATU is a high-performance molded case circuit breaker designed for reliable electrical circuit protection. Featuring a 400A rated current, 3-pole configuration, and a 50kA breaking capacity, this device ensures safety in industrial and commercial power distribution systems. It provides effective protection against overloads and short circuits, maintaining system integrity and operational efficiency in demanding electrical environments.

## Long description

The LSiS TS400N ATU is a robust molded case circuit breaker engineered to provide dependable protection for electrical distribution systems. With a rated current of 400A and a 3-pole configuration, this device is built to handle significant electrical loads while maintaining high safety standards. Its 50kA breaking capacity allows it to effectively interrupt fault currents, preventing damage to downstream equipment and ensuring the continuity of industrial and commercial operations.
Advantages
This circuit breaker offers exceptional reliability in demanding electrical environments by providing precise protection against both overloads and short circuits. The molded case design ensures a compact yet durable construction that withstands mechanical stress and environmental factors. By integrating this component into a power distribution network, users benefit from enhanced system stability and reduced risk of electrical failures, which helps in maintaining operational efficiency and protecting critical infrastructure.
Suitable for
Industrial power distribution panels
Commercial building electrical systems
Main circuit protection in switchgear
Heavy-duty machinery power supply lines
When it may not be suitable
This device is not intended for use in residential applications where lower amperage ratings are required. It is also not suitable for DC power systems or environments that exceed the specified voltage and breaking capacity limits.
Key specifications
Rated current: 400A
Number of poles: 3
Breaking capacity: 50kA
Type: Molded Case Circuit Breaker (MCCB)
How to use
The installation of the LSiS TS400N ATU should be performed by a qualified electrician in accordance with local electrical codes. The device is designed for mounting within a standard electrical enclosure or switchboard. Ensure that all cable connections are tightened to the manufacturer's specified torque settings to prevent overheating. Once installed, the breaker can be manually operated using the front-mounted toggle switch to connect or disconnect the power supply.
What to consider before purchase
Verify that the 400A rating matches your system load requirements
Ensure the 3-pole configuration is compatible with your electrical network
Check the physical dimensions of your enclosure to ensure the breaker fits correctly
Confirm that the 50kA breaking capacity is sufficient for the prospective fault current at the installation point
Usage recommendations
Regularly inspect the circuit breaker for signs of wear or heat damage and perform periodic testing of the tripping mechanism to ensure continued protection of your electrical system.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. 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 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

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