1. Ro-ràdh
This manual provides essential information for the installation, operation, and maintenance of the FERMAX 4825 DUOX Plus DIN10 24VDC 2.5A Power Supply with Filter. This unit is designed to provide stable and reliable power to various FERMAX DUOX Plus intercom system components.
The FERMAX 4825 is a DIN rail mountable power supply, featuring a 24V DC output at 2.5A, and an integrated filter for optimal performance within DUOX Plus systems. It is protected by an electronic fuse to ensure safety and longevity.
2. Toradh thallview

Figear 1: Aghaidh view of the FERMAX 4825 DUOX Plus DIN10 Power Supply. The image displays the input terminals (N, L), output terminals (24V, 2.5A), Power Bus and Prev Bus terminals, and LED indicators for ON and OVERLOAD status. Key specifications like input voltage (100-240V; 1.2A, 50-60Hz) and output voltage (24V; 2.5A) are visible, along with the FERMAX brand logo and model number REF. 4825.
The FERMAX 4825 power supply is equipped with the following key features:
- Input Voltage: Ag obair le cuir a-steach voltage range of 100-240V AC, 50-60 Hz, ensuring compatibility with standard electrical grids.
- Toradh Voltage: Provides a stable 24V DC output at 2.5A, suitable for various DUOX Plus components.
- Electronic Fuse Protection: Features an electronic fuse that protects the unit from short circuits. In case of a short circuit, the primary voltage supply must be disconnected for approximately one minute to reset the protection.
- Criathrag Amalaichte: Includes an integrated filter to enhance signal quality and system stability within DUOX Plus installations.
- DIN10 Mounting: Designed for easy installation on a DIN rail, making it suitable for electrical cabinets and distribution boards.
- Comharran LED: Equipped with "ON" and "OVERLOAD" LED indicators for quick status monitoring.
3. Stiùireadh Sàbhailteachd
- Feumaidh luchd-obrach teisteanasach an stàladh a dhèanamh a rèir chòdan is riaghailtean dealain ionadail.
- Dèan cinnteach gu bheil am prìomh sholar cumhachd air a dhì-cheangal mus dèan thu stàladh, uèirleadh no cumail suas sam bith.
- Do not expose the unit to moisture, water, or extreme temperatures.
- Na fosgail an casing of the power supply. There are no user-serviceable parts inside.
- Dearbhaich cuir a-steach voltage and frequency match the specifications of the power supply before connection.
4. Setup agus Stàladh
4.1 Stàladh
- Select a suitable location within an electrical cabinet or distribution board that allows for proper ventilation.
- Mount the FERMAX 4825 power supply onto a standard DIN rail. Ensure it is securely fastened.
4.2 Ceanglaichean Uèiridh
Refer to Figure 1 for terminal locations.
- Cumhachd cuir a-steach (AC): Connect the main AC power supply to the terminals labeled N (Neutral) and L (Line). Ensure proper polarity. The input range is 100-240V AC, 50-60 Hz.
- Ceangal talmhainn: Connect the protective earth ground to the terminal marked with the ground symbol.
- Output Power (DC): Connect the DUOX Plus equipment requiring 24V DC power to the terminals labeled + agus - under "OUTPUT". The output is 24V DC, 2.5A.
- Power Bus / Prev Bus: Connect the DUOX Plus system bus lines to the "POWER BUS" and "PREV BUS" terminals as per your specific DUOX Plus system diagram. These terminals are typically used for data and power distribution within the intercom system.
Important: Double-check all wiring connections before applying power to prevent damage to the unit or connected equipment.
5. Stiùireadh Obrachaidh
5.1 A’ cur cumhachd air adhart
- After ensuring all connections are secure and correct, switch on the main AC power supply to the unit.
- The "ON" LED indicator on the front panel should illuminate, indicating that the power supply is active and providing output voltage.
5.2 Comharran Inbhe
- AIR LED: Illuminates when the power supply is receiving input power and operating normally.
- OVERLOAD LED: Illuminates if the output current exceeds the rated 2.5A, or if a short circuit is detected on the output.
6. Cumail suas
The FERMAX 4825 power supply is designed for reliable, long-term operation with minimal maintenance. Follow these guidelines:
- Glanadh: Periodically clean the exterior of the unit with a soft, dry cloth. Do not use liquid cleaners or solvents. Ensure the unit is powered off before cleaning.
- Fionnarachadh: Ensure that the ventilation openings are not obstructed to allow for proper air circulation and cooling.
- Sgrùdaidhean ceangail: Occasionally check all wiring connections to ensure they remain tight and secure.
7. A ’dèanamh trioblaid
- No "ON" LED illumination:
- Check if the main AC power supply is connected and active.
- Verify the input wiring (N, L) is correct and secure.
- "OVERLOAD" LED illuminates:
- This indicates an overcurrent condition or a short circuit on the 24V DC output or connected DUOX Plus bus lines.
- Immediately disconnect the main AC power supply to the unit.
- Inspect all connected DUOX Plus equipment and wiring for short circuits or excessive load.
- After resolving the issue, wait approximately one minute before reconnecting the main AC power supply to allow the electronic fuse to reset.
- If the problem persists, the connected equipment may be drawing too much current, or the power supply itself may be faulty.
- Chan eil Voltage / Sin Tensión / Nicht Spannung:
- This label on the unit indicates the absence of voltage. If the "ON" LED is off and there is no output, refer to the "No 'ON' LED illumination" troubleshooting steps.
8. Sònrachaidhean
| Feart | Sònrachadh |
|---|---|
| Brand | FERMAX |
| Modail | 4825 (F04825) |
| Input Voltage | 100-240V AC |
| Tricead cuir a-steach | 50-60 Hz |
| Teachd a-steach an-dràsta | 1.2 A |
| Toradh Voltage | 24V DC |
| Toradh gnàthach | 2.5 A |
| Toradh cumhachd | 60 watt |
| Modh fuarachaidh | Air Cooling / Ventilator |
| A' cur suas | DIN Rail (DIN10) |
| Dìon | Electronic Fuse Protected |
| Cuideam | 96 gram |
Nota: Faodaidh mion-chomharrachaidhean atharrachadh gun rabhadh.
9. Barantas agus Taic
FERMAX products are manufactured to high-quality standards. This product includes a satisfaction guarantee and quality customer service.
For technical support, warranty claims, or further assistance, please contact your local FERMAX distributor or visit the official FERMAX website. Please have your product model (4825) and serial number (if applicable) ready when contacting support.
Airson tuilleadh fiosrachaidh, faodaidh tu tadhal air an FERMAX official weblàrach.





