# Automatic Phase Switch FF PF-441 for Use with Contactors — PF-441

**URL:** https://aio.lv/en/product--ff-pf-441--12111581
**Data updated:** 2026-03-20 10:03 (EET)
**Category:** Control Systems
**Manufacturer:** FF
**Manufacturer code:** PF-441
**EAN:** 5908312594048
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 86.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 71.48 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-pf-441--12111581

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

Automatic phase switch FF PF-441 is designed to monitor and automatically switch supply phases for coordinated operation with contactors. The device detects phase loss or asymmetry and transfers load to an available phase to protect three-phase equipment. Suitable for industrial and commercial installations requiring phase changeover and continuity of power supply when used alongside contactors.

## Long description

Automatic Phase Switch FF PF-441 is a compact device designed to monitor three-phase supply and perform automatic phase changeover in coordination with contactors. It detects phase loss, phase sequence errors and voltage asymmetry, and initiates transfer of the load to a healthy phase to maintain power continuity for three-phase equipment. The unit is engineered for integration with contactors in industrial and commercial electrical installations where uninterrupted operation is required.
Advantages
The automatic switching function reduces downtime by ensuring a rapid transfer to an available phase when a fault is detected, while coordination with external contactors provides safe disconnection and reconnection of loads. The device's monitoring capability for phase presence and symmetry helps protect motors and other three-phase equipment from damage caused by phase loss or imbalance. Its compact footprint and clear functional behaviour simplify integration into existing control panels.
Suitable for
Protection and automatic changeover for three-phase motors and machinery
Industrial control panels where phase continuity is critical
Commercial installations with essential three-phase loads
Systems that require coordinated switching with contactors
Key specifications
Function: automatic phase monitoring and changeover
Detection: phase loss and phase asymmetry monitoring
Operation: triggers changeover via coordination with external contactors
Mounting: panel or DIN-rail compatible housing suitable for control cabinets
Typical application: three-phase supply protection and continuity management
How to use
Install the automatic phase switch in the control panel according to the electrical schematic and manufacturer wiring instructions, ensuring proper connection to the incoming three-phase supply and to the control inputs of the contactors it will operate with. Configure or verify any adjustable settings for phase sensitivity or delay if the unit provides them, and test the interaction with contactors under controlled conditions to confirm correct changeover and interlocking. Regular visual inspection and electrical testing as part of preventive maintenance will help ensure reliable operation.
Usage recommendations
Use the unit together with appropriately rated contactors and protection devices; verify compatibility with the specific motor or load characteristics and ensure installation by a qualified electrician following local regulations and safety standards.

## FAQ

### How much does the Automatic Phase Switch FF PF-441 cost, and is it available for purchase?

The price is 86.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 02.07.2026 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 Automatic Phase Switch FF PF-441 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/12111581/67647267_large.webp