# F&F ST25-40-M Modular Contactor 25A 4-Pole

**URL:** https://aio.lv/en/product--ff-st25-40-m--12458766
**Data updated:** 2026-05-18 09:28 (EEST)
**Category:** Power Sockets
**Manufacturer:** FF
**Manufacturer code:** ST25-40-M
**EAN:** 5902431673998
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 34.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 28.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-st25-40-m--12458766

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The F&F ST25-40-M is a high-quality modular contactor designed for reliable switching of electrical circuits in residential and industrial installations. This 4-pole device features a 25A rated current, ensuring efficient control of lighting, heating, and ventilation systems. Its compact modular design allows for easy mounting on standard DIN rails, providing a professional solution for electrical distribution panels.

## Long description

The F&F ST25-40-M is a high-quality modular contactor engineered for the reliable switching of electrical circuits in both residential and industrial environments. This 4-pole device is designed to handle a rated current of 25A, providing robust and efficient control over various electrical loads such as lighting, heating, and ventilation systems. Its compact, modular architecture is specifically optimized for installation on standard DIN rails, making it a professional and space-saving solution for modern electrical distribution panels.
Advantages
The primary benefit of this modular contactor is its high operational reliability and durability in demanding electrical setups. By utilizing a standardized modular design, it integrates seamlessly into existing distribution boards without requiring complex modifications. The 4-pole configuration offers versatile switching capabilities, ensuring that multiple circuits can be managed simultaneously with precision. Furthermore, the device is built to withstand frequent switching cycles, which contributes to the longevity and stability of the connected electrical systems.
Suitable for
Control of residential lighting systems
Management of heating and cooling equipment
Switching of ventilation and air conditioning units
Integration into industrial automation panels
General electrical circuit distribution
When it may not be suitable
This contactor is not intended for applications requiring switching currents higher than 25A or for environments with extreme environmental conditions that exceed the specified protection ratings. It is also not suitable for direct motor control applications that require specific overload protection features not integrated into this device.
Key specifications
Rated current: 25A
Number of poles: 4
Mounting type: DIN rail
Design: Modular
Application: Residential and industrial electrical circuits
How to use
The contactor should be installed by a qualified professional within an electrical distribution board. It is designed to be snapped onto a standard 35mm DIN rail. Once mounted, connect the control circuit to the coil terminals and the load circuits to the power terminals according to the wiring diagram provided on the device housing. Ensure all connections are tightened to the specified torque to prevent overheating and ensure optimal electrical contact.
What to consider before purchase
Verify that the 25A rated current is sufficient for your specific load requirements
Ensure there is adequate space on the DIN rail within your distribution panel
Check that the control voltage of the coil matches your control system
Confirm the number of poles meets the requirements of your circuit configuration
Usage recommendations
Always ensure that the power supply is disconnected before performing any installation or maintenance work on the electrical panel. Regularly inspect the terminal connections for tightness to maintain system safety and performance.

## FAQ

### How much does the F&F ST25-40-M Modular Contactor cost, and is it available for purchase?

The price is 34.49 € (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 06.07.2026 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. 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 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/12458766/68760882_large.webp