12V DC switching power supply with fan, enclosed 400W, 33A

600606
€43,90
€43,90
Tax included. Shipping calculated at checkout.

Technical specifications

Input voltage
  • 115 / 230 V AC

Output voltage
  • 12 V DC

Performance
  • 400W

Output current
  • 33A

Efficiency
  • 85%

Protection Features

Overload, overvoltage, overheating and short-circuit protection

Voltage tolerance
  • ±5%

Humidity
  • 20% to 90% RH

Dimmable

No

Connection
  • Screw terminals

Protection rating
  • IP20

Material

Aluminum

Assembly
  • Horizontal mounting, well ventilated

Warranty

3 years

Dimensions

Length
  • 215mm

Width
  • 105mm

Height
  • 30mm

Advantages

✔ 400 W power output for larger 12 V LED installations
✔ 12 V DC constant voltage
✔ Output current of up to 33.33 A
✔ Low-profile design with a height of 30 mm
✔ Efficiency of up to 85%
✔ Protection against overload, overvoltage, overheating, and short circuits
✔ Stable power supply for LED strips and LED modules
✔ IP20 rating for dry indoor spaces
✔ 3-year warranty

Scope of application

• 12 V LED strips and LED modules
• Indirect lighting in ceilings, niches or furniture
• Decorative lighting installations in living areas
• Commercial LED lighting
• LED lighting in offices, retail spaces and exhibitions
• Applications with higher power requirements in dry indoor areas

Scope of delivery

• 1 × 12 V constant voltage power supply, 400 W

Important note
The power supply is not dimmable. If the connected LED lighting is to be dimmed, a suitable 12 V LED controller or dimmer is required on the output side.

Installation Instructions

The power supply must be mounted on a firm, level surface and is intended for use in dry indoor areas. Ensure that there is sufficient space around the power supply for heat dissipation. It must not be covered or operated in completely enclosed, unventilated areas.
The connected LED components must be suitable for a constant 12 V DC voltage. The total power of the LED strips or LED modules must not exceed 400 W. For long-lasting operation, it is recommended to plan for a power reserve and not to operate the power supply continuously at its absolute maximum.
Connection to the 230 V mains voltage must only be carried out by qualified personnel. Before commissioning, the voltage, polarity, and total power of the connected LED components should be checked.

At a glance:

• Connection and commissioning must be carried out exclusively by a qualified electrician.
• Power supplies with protection rating IP20 are only suitable for indoor use and must not come into contact with moisture.
• Ensure adequate ventilation, as power supplies generate heat during operation.
• Observe the maximum power consumption of the connected loads.
• Power supplies must not be covered and are to be mounted in a dry, well-ventilated environment.

12V DC switching power supply with fan, enclosed 400W, 33A

€43,90

What is an LED power supply?

An LED power supply (also known as an LED transformer or LED power source) converts the standard mains voltage of 230V into the direct current (usually 12V or 24V) required for LED strips. It is an essential component of any LED installation and must be selected to match the power and voltage of the LEDs.

What voltages are common for LED power supplies?

Common output voltages are:

5V: typical for addressable LED strips such as WS2812 or SK6812

12V: common for shorter distances and standard LED strips

24V: ideal for longer LED strips or applications with lower voltage drop

48V: designed for particularly long distances

How do I calculate the right power for my power supply?

The required power is determined by the total power of all connected LED strips in watts. You should also include a safety margin of approx. 10%.

Example:
An LED strip with 10 W/m, length 5m → 50W + 10% margin = at least 55W power supply capacity.

What types of LED power supplies are there?

  • Open power supplies (industrial form): for installation in enclosures with ventilation slots
  • Enclosed power supplies: protected, usually IP20 or higher.
    Variants with IP65 or IP67 even offer the option of installation in damp and outdoor areas
  • Plug-in power supplies: ideal for smaller LED projects, plug-and-play
  • DIN rail power supplies: for distribution in control cabinets

What does the IP protection rating mean for power supplies?

The IP protection rating indicates how well a power supply is protected against dust and moisture:

  • IP20: for dry indoor areas only
  • IP65 / IP67: for damp areas, outdoor use, or dusty environments

Can multiple LED strips be connected to one power supply?

Yes, as long as the total power of all strips does not overload the power supply and they are voltage-compatible.

Pay attention to:

  • sufficient cable cross-section
  • secure connections
  • additional feed points for longer distances

What happens if the power supply is too weak?

A power supply that is too weak can lead to flickering, color distortion, or even damage. The LEDs will no longer receive sufficient power – reliable operation cannot be guaranteed.

Can I use a power supply with too much power?

Yes, that is easily possible. LED strips only draw as much power as they need.

  • Advantage: more headroom, longer power supply lifespan
  • Disadvantage: excessive oversizing reduces efficiency and unnecessarily increases standby power consumption

How is an LED power supply connected?

  • Primary side (230V AC): L (Phase), N (Neutral conductor), PE (Protective earth, if present)
  • Secondary side (e.g. 12V DC): V+ and V–

⚠️ Important note: Connection to the 230V mains voltage must be carried out exclusively by a qualified electrician. Improper connection can lead to electric shocks, short circuits or fires.

Can I connect a power supply myself?

  • 230V connection: must only be carried out by a qualified electrician.
  • 12/24V side (low voltage): can generally also be connected by laypeople.
    ⚠️ Important note: Many power supplies have common terminal blocks where both the 230V input and the 12/24V outputs are located next to each other. For this reason, the wiring of such power supplies should always be carried out by a qualified electrician.

What is the difference between 12V and 24V power supplies?

  • 12V: Standard for many LED strips, suitable for shorter distances
  • 24V: Lower voltage drop, therefore better for longer distances

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