Fan unit EFB Elektronik PRO-LFD04AT.TS

The EFB Elektronik PRO-LFD04AT.TS is a cooling fan unit with an integrated thermostat, designed for installation in the roof of equipment cabinets and rack systems. It features a robust black plastic housing, operates from 230 V mains and fits a cabinet roof with a width and depth of 380 mm to provide targeted airflow and temperature control for electronic components.

Advantages

The unit combines ventilation and temperature regulation in a single compact module, reducing the need for separate controllers. For the four-fan variant it offers a three-position switch (0/I/II) that enables a reduced-speed "Silent-Mode" for especially quiet operation, while the two-fan variant uses a simple ON/OFF switch. Its plastic housing is lightweight and corrosion-resistant, and the integrated thermostat maintains a controlled internal cabinet temperature.

Suitable for

• Ventilation of telecom, server and network cabinets
• Cooling of industrial control cabinets and enclosures
• Retrofit or replacement in compatible 380 mm roof-mount openings

Key specifications

• Model: PRO-LFD04AT.TS
• Brand: EFB Elektronik
• Supply voltage: 230 V
• Housing colour: Black
• Mounting location: Cabinet roof
• Dimensions (W × D): 380 mm × 380 mm (fits roof opening)
• Variant controls: 4-fan variant with 3-stage switch (0/I/II) for Silent-Mode; 2-fan variant with ON/OFF switch
• Integrated thermostat for temperature-dependent control

How to use

Install the fan unit in the roof cut-out of the cabinet according to the cabinet manufacturer’s mounting instructions, ensuring correct orientation for airflow. Connect the unit to a 230 V supply using appropriate wiring and protective devices. For the four-fan variant select the required speed position (0/I/II) to enable silent operation when needed; for the two-fan variant use the ON/OFF switch to start or stop ventilation. Verify thermostat settings and allow the unit to regulate internal temperature automatically.

Recommendations

Ensure regular cleaning of fan blades and filter areas to maintain airflow and inspect electrical connections periodically. Use the reduced-speed Silent-Mode where noise is a concern, and confirm compatibility with cabinet roof opening dimensions before installation.