Mitsubishi Elevator Switching Power Supply HWS15-12/A

Mitsubishi Elevator Switching Power Supply HWS15-12/A is commonly used in elevator control cabinet power supply applications where stable 12V DC output is required.

This unit is usually installed inside the elevator controller cabinet or related electrical assembly to support low-voltage circuits, signal boards, display modules, communication circuits, relay circuits, and other electronic components.

HWS15-12/A is a TDK-Lambda HWS series AC-DC switching power supply. Public technical information lists it as a 15W, 12V, 1.3A single-output power supply module. It is also found in elevator spare parts markets as a Mitsubishi elevator main board switching power supply.

Model Confirmation Notes

Customers may search or request this power supply under these related references:

• HWS15-12/A
• TDK-Lambda HWS15-12/A
• HWS15A-12/A
• HWS15-12
• Mitsubishi Elevator Switching Power Supply HWS15-12/A

The original HWS15-12/A has been listed as obsolete by TDK-Lambda. The recommended alternate part number is HWS15A-12/A, but replacement compatibility should still be checked before use. Electrical output, mounting style, terminal cover, wiring position, and cabinet installation space should be confirmed carefully.

When Buyers Usually Replace This Part

Maintenance teams usually check this power supply when the elevator has low-voltage circuit symptoms such as:

• display reset
• unstable signal response
• relay circuit instability
• communication board restart
• controller input errors
• abnormal low-voltage behavior

These symptoms may look like PCB failure, but in some cases the actual cause is unstable 12V power output.

Power Output Check Before Ordering

Before ordering HWS15-12/A, please confirm:

• original power supply label
• output voltage: 12V
• output current: 1.3A
• input voltage range
• terminal structure
• mounting size
• whether HWS15A-12/A is suitable for the cabinet

Do not replace only by appearance. Similar HWS series power supplies may have different output voltage or current ratings.

Replacement Matching Notes

If the original unit is no longer available, HWS15A-12/A may be considered as a reference replacement model, but the final decision should depend on the elevator cabinet wiring and installation condition.

For old Mitsubishi elevator systems, a clear photo of the original label and terminal wiring is usually the fastest way to confirm the correct part.