Mitsubishi Switching Power Supply X59LX-208 LDA50F-12

Mitsubishi Switching Power Supply X59LX-208 LDA50F-12 is commonly used in elevator control cabinet power supply applications.

This power supply module provides stable 12V DC output for elevator control circuits, signal boards, communication modules, display systems, relay circuits, and other low-voltage components inside the elevator cabinet.

The LDA50F-12 belongs to the COSEL LDA50F switching power supply series. Public specifications list LDA50F-12 as a 12V AC-DC power supply with approximately 51.6W output power and 4.3A output current.

Model Confirmation Notes

Customers may search this part under several related references:

• X59LX-208
• LDA50F-12
• COSEL LDA50F-12
• Mitsubishi Switching Power Supply X59LX-208
• Mitsubishi Elevator Power Supply Board LDA50F-12

The same LDA50F series includes other voltage versions such as LDA50F-5, LDA50F-9, LDA50F-12, LDA50F-15, LDA50F-18, LDA50F-24, and LDA50F-30. These are related series models, but they are not direct substitutes unless the output voltage and current match the original elevator cabinet requirement.

Where This Power Supply Is Usually Checked

In Mitsubishi elevator maintenance, this type of switching power supply is usually checked when low-voltage circuits become unstable.

Typical site symptoms may include:

• display reset
• communication board restart
• relay circuit instability
• controller input error
• intermittent signal interruption
• abnormal low-voltage circuit behavior

These issues can look like PCB failure. In some cases, the display board or communication board is not the real problem; the actual cause is unstable 12V power supply output.

12V Output Matching

Before replacing X59LX-208 LDA50F-12, technicians should confirm:

• original model number
• 12V output requirement
• 4.3A current rating
• input voltage range
• terminal layout
• mounting position
• cabinet wiring direction
• original power supply label photo

Do not replace only by appearance. A 24V or 5V version from the same LDA50F series may look similar but will not match a 12V elevator circuit.

Replacement Reminder

For old Mitsubishi elevator cabinets, the safest confirmation method is to provide a clear photo of the original power supply label and wiring terminal.

If the elevator has repeated display restart or signal board reset problems, maintenance teams usually measure the 12V output under load before replacing expensive control boards.