1. Einleitung
This manual provides comprehensive instructions for the installation, operation, and maintenance of the Finder 12.51.8.230.0000 Power Relay. This device is a versatile timer switch designed for various electrical applications, operating at 230V/AC with a 16A switching capacity. Please read this manual thoroughly before using the product to ensure safe and efficient operation.
2. Sicherheitshinweise
WARNUNG: Elektrische Installationen und Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal durchgeführt werden. Die Nichtbeachtung dieser Anweisungen kann zu Stromschlag, Brand oder schweren Verletzungen führen.
- Vor der Installation, Wartung oder dem Ausbau des Geräts muss immer die Stromzufuhr unterbrochen werden.
- Ensure the device is installed in a dry, protected environment, away from direct sunlight, moisture, and extreme temperatures.
- Überprüfen Sie, ob die Versorgungsspannungtage entspricht der Nennspannung des Gerätstage (230V/AC).
- Do not exceed the maximum switching current of 16A.
- Use appropriate wiring gauges for the current load.
- Stellen Sie sicher, dass alle Verbindungen sicher und ordnungsgemäß isoliert sind.
3. Produktüberschreitungview
The Finder 12.51.8.230.0000 is a digital timer switch designed for precise control of electrical circuits. It features a clear digital display and intuitive controls for programming. Its compact design allows for easy integration into electrical panels.
Hauptmerkmale:
- Betriebslautstärketage: 230V/Wechselstrom
- Switching Capacity: 16A
- Digital display for time and programming.
- Compact design for DIN rail mounting.
- Programmable via device buttons or NFC with a compatible smartphone app.

Abbildung 3.1: Vorderseite view of the Finder 12.51.8.230.0000 Power Relay, showing the digital display and control buttons.
4. Einrichtung und Installation
The Finder 12.51.8.230.0000 is designed for installation on a standard DIN rail within an electrical enclosure.
4.1 Montage:
- Ensure the power supply to the electrical panel is disconnected.
- Suchen Sie einen freien Platz auf der DIN-Schiene.
- Hook the top edge of the relay onto the DIN rail, then push the bottom edge until it clicks into place.
- Verify the relay is securely fastened to the rail.
4.2 Verdrahtung:
Refer to the wiring diagram below for proper connection. Ensure all connections are tight and correct before restoring power.

Figure 4.1: Wiring diagram for the Finder 12.51.8.230.0000. Terminals A1 and A2 are for power input (230V/AC). Terminals 14, 11, and 12 represent the switch contacts (14: common, 11: normally closed, 12: normally open).
- Connect the 230V/AC power supply to terminals A1 Und A2.
- Connect the load to be controlled to the switch contacts. Terminal 14 is the common contact. Use 12 for normally open (NO) operation (load turns ON when timer activates) or 11 for normally closed (NC) operation (load turns OFF when timer activates).
5. Bedienungsanleitung
The Finder 12.51.8.230.0000 can be programmed directly using its integrated buttons or more conveniently via a smartphone application using NFC technology.
5.1 Initial Setup and Time Setting:
- Upon first power-up, the display will prompt for initial settings.
- Use the navigation buttons (usually located below the display) to set the current time and date.
- Einstellungen bestätigen und speichern.
5.2 Programming Schedules (Manual):
Detailed programming steps vary by specific firmware version. Generally, navigate through the menu using the buttons to:
- Select "Program" or "Timer Settings".
- Add new ON/OFF events.
- Set the desired time for each event.
- Select the days of the week for the program to be active.
- Speichern Sie das Programm.
5.3 Programming Schedules (NFC App):
For easier programming, Finder offers a dedicated smartphone application. This method is highly recommended for complex schedules.
- Download the official Finder Toolbox App from your smartphone's app store (e.g., Google Play Store, Apple App Store).
- Ensure your smartphone has NFC capabilities and that NFC is enabled.
- Open the Finder Toolbox App.
- Create your desired ON/OFF programs within the app interface.
- Hold your smartphone near the NFC symbol on the relay (usually indicated on the front panel) to transfer the program. The app will confirm successful transfer.
Note: The NFC programming feature simplifies complex scheduling and allows for quick updates without manual button presses.
6. Wartung
The Finder 12.51.8.230.0000 Power Relay requires minimal maintenance. Regular inspection can help ensure its longevity and reliable operation.
- Reinigung: Vor der Reinigung die Stromzufuhr unterbrechen. Das Gerät mit einem weichen, trockenen Tuch abwischen. Keine Scheuermittel, Lösungsmittel oder übermäßige Feuchtigkeit verwenden.
- Verbindungen: Periodically check terminal connections to ensure they remain tight and free from corrosion. Loose connections can lead to overheating and malfunction.
- Umfeld: Ensure the operating environment remains within the specified temperature range (-20 to 50 °C) and free from excessive dust or humidity.
7. Fehlerbehebung
If you encounter issues with your Finder 12.51.8.230.0000, refer to the following common problems and solutions:
| Problem | Mögliche Ursache | Lösung |
|---|---|---|
| Device display is off. | Keine Stromversorgung. | Check circuit breaker and wiring to terminals A1/A2. Ensure 230V/AC is present. |
| Die Last schaltet nicht wie programmiert ein/aus. | Incorrect wiring; Program error; Overload. | Verify wiring according to Figure 4.1. Check programming schedule. Ensure load current does not exceed 16A. |
| NFC programming fails. | NFC not enabled on phone; Phone not compatible; Incorrect app usage. | Ensure NFC is active on your smartphone. Try repositioning the phone closer to the relay's NFC area. Update the Finder Toolbox App. |
| Datum/Uhrzeit sind falsch. | Internal battery low (if applicable); Manual setting error. | Reset time/date manually or via NFC app. The device has an internal battery for timekeeping during power outages. If issues persist, contact support. |
8. Spezifikationen
Detailed technical specifications for the Finder 12.51.8.230.0000 Power Relay:
- Marke: Finder
- Modellname: 12.51.8.230.0000
- Modellreihen: Serie 12
- Betriebslautstärketage: 230V / AC
- Schaltstrom: 16 A
- Wastage: 1920 Watt (Max.)
- Betriebstemperatur: -20 bis 50 °C
- Montageart: DIN-Schiene
- Eingabe der menschlichen Schnittstelle: Schaltflächen
- Farbe: Weiß
- Material: See description (typically plastic housing)
- Artikelgewicht: 110 Gramm
- Produktabmessungen (L x B x H): 9.5 x 9 x 4.5 cm
- Digitale Speicherkapazität: 1 MB (for program data)
- Frühestmöglicher Termin: 4. November 2012
8.1 Abmessungen:

Figure 8.1: Dimensional drawing of the Finder 12.51.8.230.0000, showing key measurements in millimeters (e.g., 88.8mm height, 35mm width, 60.8mm depth).
9. Garantie und Support
For warranty information and technical support, please refer to the official Finder webBesuchen Sie unsere Website oder kontaktieren Sie Ihren Händler vor Ort. Bewahren Sie Ihren Kaufbeleg als Kaufnachweis auf.
Online-Ressourcen: www.finder-relays.com





