# Time Relay FF PCU-504UNI with Power-Fail Memory 1NO/NC 12–264V

**URL:** https://aio.lv/en/product--ff-pcu-504uni--12115749
**Data updated:** 2026-03-20 10:08 (EET)
**Category:** Control Systems
**Manufacturer:** FF
**Manufacturer code:** PCU-504UNI
**EAN:** 5908312598503
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 48.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 40.49 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-pcu-504uni--12115749

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

FF PCU-504UNI is a time relay featuring a power-fail memory and one changeover contact configurable as 1NO/NC. Designed for control and automation tasks, it accepts a wide supply range of 12–264V. The module preserves timing state after supply interruption and resumes operation, making it suitable for industrial control panels, lighting sequences, and process timing where continuity after power loss is required.

## Long description

FF PCU-504UNI is a time relay with power-fail memory and a single changeover contact configurable as either normally open (NO) or normally closed (NC). It accepts a wide supply voltage range from 12 to 264 V, making it compatible with diverse industrial and commercial installations. The module preserves the timing state when supply is interrupted and resumes count or output state on restoration of power, supporting reliable operation in applications where continuity after power loss is required.
Advantages
The device’s power-fail memory prevents loss of timing information during supply interruptions, reducing the need for manual reset or reconfiguration. A wide input voltage range enables flexible installation across 12–264 V systems without additional converters. The single configurable changeover contact simplifies wiring and allows the relay to be used for either make-before-break or break-before-make functions as required.
Suitable for
 Industrial control panels and automation racks
 Lighting sequences and timed switching in commercial buildings
 Process timing where continuity after power interruption is essential
 Retrofit projects replacing fixed-function timers
Key specifications
 Operating voltage range: 12–264 V AC/DC
 Contact configuration: single changeover contact (configurable NO/NC)
 Power-fail memory: preserves timing state during supply loss and resumes on power restore
 Mounting: DIN-rail compatible form factor for panel installation
 Typical application environment: control cabinets, distribution boards, automation cabinets
How to use
Install the relay on a DIN rail inside an appropriate enclosure and connect supply lines according to system voltage. Configure the output contact for normally open or normally closed operation per application needs, and set the required timing parameters following the manufacturer’s front-panel or configuration instructions. During operation, the unit will maintain its timing state if power is interrupted and will continue from the stored state when power returns. Ensure protective measures such as appropriate fusing and proper grounding are in place before energising.
Usage recommendations
For reliable performance, mount the relay in a well-ventilated control cabinet away from sources of excessive heat or moisture, use correct supply voltage within the specified 12–264 V range, and verify wiring polarity for DC installations. Regularly inspect terminal connections and apply manufacturer-recommended surge protection in environments prone to voltage disturbances.

## FAQ

### How much does the Time Relay FF PCU-504UNI 1NO/NC 12–264V cost, and is it available for purchase?

The price is 48.99 € (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 16.07.2026 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/12115749/67650914_large.webp