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header-product LSiS TS400N FMU Molded Case Circuit Breaker 400A 3P 50kA
616.99 €

LSiS TS400N FMU Molded Case Circuit Breaker 400A 3P 50kA

LSiS TS400N FMU 400A 3P Circuit Breaker Photo 1
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LSiS TS400N FMU Molded Case Circuit Breaker 400A 3P 50kA

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LSiS TS400N FMU Molded Case Circuit Breaker 400A 3P 50kA

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Short description

The LSiS TS400N FMU is a complete 3-pole molded case circuit breaker designed for reliable electrical protection. With a rated current of 400A and a breaking capacity of 50kA, this device is suitable for industrial and commercial power distribution systems. It features an FMU thermal-magnetic trip unit, ensuring effective overload and short-circuit protection for electrical circuits and equipment.
Available for order: 2 pcs.
Warranty: 2 Years
SKU: 12469206
Manufacturer: LSiS
free shipment

Cheapest delivery:

Venipak Locker LV

Pick-up points

Venipak Locker LV

Cost

1.89 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
14.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
17.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 €
Parcel couriers
Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Pickup LV / Latvijas Pasts nodaļa
17.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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3 mth. х 205.66 €

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All payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment, Leasing for legal entities
36 months installment: from 17.14 euros per month
Leasing for legal entities: from 21.47 euros per month
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Product information

Description

The LSiS TS400N FMU is a robust 3-pole molded case circuit breaker engineered to provide dependable electrical protection in demanding environments. With a rated current of 400A and a high breaking capacity of 50kA, this device is specifically designed to manage power distribution in industrial and commercial settings. It utilizes an integrated thermal-magnetic trip unit, which offers precise monitoring and rapid response to overloads and short-circuit events, thereby safeguarding critical electrical infrastructure and connected equipment.

Advantages

This circuit breaker stands out due to its high-performance thermal-magnetic trip mechanism that ensures consistent reliability under varying load conditions. Its compact molded case design allows for efficient space utilization within electrical panels while maintaining high structural integrity. The 50kA breaking capacity provides a significant safety margin, effectively interrupting high fault currents to prevent damage to downstream components. Furthermore, the LSiS TS400N FMU is built for longevity and ease of integration into standard power distribution architectures, making it a dependable choice for professionals seeking consistent circuit protection.

Suitable for

  • Industrial power distribution systems
  • Commercial building electrical panels
  • Protection of heavy-duty machinery and motors
  • Main distribution boards in manufacturing facilities

When it may not be suitable

This device is not intended for residential applications where lower current ratings are standard. It is also not suitable for environments requiring specialized electronic trip units with advanced communication or monitoring features, as this model relies on a traditional thermal-magnetic mechanism.

Key specifications

  • Rated current: 400A
  • Number of poles: 3
  • Breaking capacity: 50kA
  • Trip unit type: Thermal-magnetic (FMU)
  • Design: Molded case circuit breaker

How to use

Installation should be performed by a qualified electrician in accordance with local electrical codes and safety regulations. The breaker is designed for mounting within a compatible distribution board or enclosure. Ensure that all cable connections are tightened to the manufacturer's specified torque settings to prevent overheating. Once installed, the device can be manually operated using the front-facing toggle handle to switch the circuit on or off. In the event of a trip, the handle will move to a neutral position, requiring a manual reset after the fault has been identified and cleared.

What to consider before purchase

  • Verify that the 400A rating matches your system load requirements
  • Ensure the 50kA breaking capacity is sufficient for your installation's prospective fault current
  • Check the physical dimensions to ensure compatibility with your existing panel space
  • Confirm that the 3-pole configuration aligns with your electrical supply type

Usage recommendations

Regular inspection of the terminal connections and the operational handle is recommended to ensure long-term performance. Avoid exposing the device to extreme moisture or corrosive environments to maintain the integrity of the internal trip mechanism.

Description

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Customer reviews

Customer questions

FAQ

How much does the LSiS TS400N FMU 400A 3P Circuit Breaker cost, and is it available for purchase?

The price is 616.99 € (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 14.07.2026 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, Leasing for legal entities. All transactions are 100% secure and encrypted.

Can LSiS TS400N FMU 400A 3P Circuit Breaker be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the LSiS TS400N FMU 400A 3P Circuit Breaker online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.