# F&F SF-550 Soft Starter 3x400V 110A 55kW

**URL:** https://aio.lv/en/product--ff-sf-550--12467929
**Data updated:** 2026-05-18 09:29 (EEST)
**Category:** Control Systems
**Manufacturer:** FF
**Manufacturer code:** SF-550
**EAN:** 5908312597582
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 138.49 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 940.90 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-sf-550--12467929

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The F&F SF-550 is a high-performance soft starter designed for 3-phase induction motors operating at 400V. With a rated current of 110A and a power capacity of 55kW, this device ensures smooth acceleration and deceleration, reducing mechanical stress and electrical surges during motor startup. It is an essential component for industrial automation, protecting equipment and extending the service life of motors in various applications.

## Long description

The F&F SF-550 is a robust soft starter engineered for 3-phase induction motors operating at a voltage of 400V. With a rated current of 110A and a power capacity of 55kW, this device provides controlled motor starting and stopping. By managing the voltage supplied to the motor, it effectively minimizes mechanical shock and electrical inrush currents, which helps maintain the integrity of the power grid and the connected mechanical components.
Advantages
The primary benefit of using the F&F SF-550 is the significant reduction of mechanical stress on drive systems, such as belts, gears, and couplings, during the startup phase. By facilitating a gradual increase in torque, the device prevents sudden jerks that can lead to premature wear or failure of industrial equipment. Furthermore, it limits electrical surges, which reduces the load on the electrical installation and prevents voltage drops that might otherwise affect other sensitive equipment connected to the same network.
Suitable for
Industrial conveyor systems
Pumping stations and water management systems
Ventilation and air conditioning fans
Compressors and industrial blowers
Centrifugal machinery
This soft starter may not be suitable for applications requiring high starting torque, as the voltage reduction method inherently limits the torque available during the acceleration phase. It is also not intended for frequent start-stop cycles that exceed the thermal capacity of the device, nor is it a substitute for a variable frequency drive when precise speed control is required throughout the entire operation.
Key specifications
Rated voltage: 3x400V AC
Rated power: 55kW
Rated current: 110A
Operating mode: Soft start and soft stop
Application: 3-phase induction motors
How to use
The F&F SF-550 should be installed in a control cabinet by a qualified electrician in accordance with local electrical regulations. Ensure that the motor parameters match the device specifications before connection. Once installed, the soft starter parameters, such as ramp-up and ramp-down times, should be configured via the control interface to suit the specific load requirements of the motor. After configuration, the device will automatically manage the motor startup sequence upon receiving a start signal.
What to consider before purchase
Verify that the motor power and current ratings are compatible with the 55kW and 110A limits.
Ensure the installation environment provides adequate ventilation to prevent overheating.
Check if the application requires a bypass contactor for long-term operation.
Confirm the supply voltage matches the 3x400V requirement.
Usage recommendations
Regularly inspect the electrical connections for tightness and ensure the cooling vents remain free of dust and debris to maintain optimal performance and longevity of the soft starter.

## FAQ

### How much does the F&F SF-550 Soft Starter 3x400V 110A 55kW cost, and is it available for purchase?

The price is 1,138.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 09.07.2026 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 F&F SF-550 Soft Starter 3x400V 110A 55kW 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 FF 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 FF 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/12467929/68770419_large.webp