# F&F PCU-518 DUO Time Relay with External Time Setting Potentiometer

**URL:** https://aio.lv/en/product--ff-pcu-518-duo--12456077
**Data updated:** 2026-05-18 09:40 (EEST)
**Category:** Control Systems
**Manufacturer:** FF
**Manufacturer code:** PCU-518 DUO
**EAN:** 5908312592594
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 61.99 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 51.23 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-pcu-518-duo--12456077

## 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 PCU-518 DUO is a professional time relay designed for precise time control in electrical installations. It features an external potentiometer for convenient time adjustment. This device is ideal for industrial and domestic automation systems, ensuring reliable switching operations based on set time intervals. Its robust design supports efficient integration into control panels.

## Long description

The F&F PCU-518 DUO is a professional time relay engineered for precise time-based control within electrical installations. This device allows for reliable switching operations by utilizing an external potentiometer, which provides users with the flexibility to adjust time settings conveniently without needing to access the internal components of the relay. Its robust construction ensures durability and seamless integration into standard control panels, making it a dependable solution for both industrial and residential automation requirements.
Advantages
The primary benefit of the PCU-518 DUO is its external time adjustment capability, which significantly simplifies the process of fine-tuning operations in hard-to-reach or enclosed electrical cabinets. By separating the control interface from the main relay unit, the device offers enhanced operational safety and ease of maintenance. Furthermore, the relay is built to withstand demanding environments, providing consistent performance and high accuracy in timing intervals, which is essential for maintaining the stability of complex electrical systems.
Suitable for
Industrial automation systems
Domestic lighting control
Ventilation and heating management
Process control in manufacturing
Delayed activation of electrical circuits
When it may not be suitable
This relay may not be appropriate for applications requiring extremely high-frequency switching cycles that exceed the mechanical or electrical lifespan of the device. Additionally, it is not designed for environments with extreme moisture or corrosive gases unless housed in a suitable protective enclosure.
Key specifications
Operating voltage: 230V AC
Time range: Adjustable via external potentiometer
Mounting: DIN rail
Contact configuration: Single pole changeover
Housing material: Flame-retardant plastic
How to use
To install the PCU-518 DUO, mount the relay onto a standard DIN rail within your electrical distribution board. Connect the power supply and the controlled load according to the wiring diagram provided on the device casing. Once installed, connect the external potentiometer to the designated terminals. Use the potentiometer dial to set the desired time interval. Ensure all connections are secure and that the voltage matches the specifications before energizing the circuit.
What to consider before purchase
Verify that the supply voltage matches your electrical network requirements.
Ensure the external potentiometer cable length is compatible with your installation layout.
Check the maximum load current to ensure it does not exceed the relay contact rating.
Confirm that the DIN rail space is sufficient for the device dimensions.
Usage recommendations
For optimal performance and longevity, ensure the device is installed in a well-ventilated area and protected from dust and extreme temperature fluctuations. Regularly inspect the wiring connections to prevent overheating or contact resistance issues.

## FAQ

### How much does the F&F PCU-518 DUO Time Relay with External Potentiometer cost, and is it available for purchase?

The price is 61.99 € (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/12456077/68758314_large.webp