Mitsubishi Elevator Power Supply Box YE500B334G02

Mitsubishi Elevator Power Supply Box YE500B334G02 is used in Mitsubishi elevator electrical power supply applications.

This box assembly is typically identified by the external Mitsubishi part number YE500B334G02. Depending on the original elevator configuration, the internal power supply module or PCB reference may vary, so replacement should not be selected only by the outer box appearance.

Model and Internal Power Supply References

Customers may search this product under several related references:

• YE500B334G02
• Mitsubishi Elevator Power Supply Box YE500B334G02
• ZWS30-12/J
• PWB-6
• ZWS30-24/JA
• PWB-655H

Some public elevator spare parts listings describe YE500B334G02 together with ZWS30-12/J and PWB-6. Other market listings associate the same YE500B334G02 box with ZWS30-24/JA and PWB-655H.

Because these references may represent different internal configurations, they should not be treated as automatically interchangeable.

Why the Box Model Alone Is Not Enough

Two power supply boxes may have the same or similar external structure while using different internal power supply modules.

Before ordering, maintenance teams should confirm:

• external box model: YE500B334G02
• internal power supply model
• PCB or PWB number
• input voltage
• output voltage
• connector position
• terminal wiring
• mounting structure

A clear photo of both the outside label and the internal power supply module is usually the fastest way to confirm the correct replacement.

Typical Replacement Situation

This type of power supply box is usually checked when elevator electrical functions become unstable or when the original box assembly shows visible damage.

Maintenance teams may inspect the unit when there are symptoms such as:

• intermittent power interruption
• unstable landing station operation
• display or signal circuit reset
• damaged internal power supply module
• loose or oxidized wiring terminals
• abnormal low-voltage output

These symptoms may also be related to external wiring, connectors, or other control circuit components. For this reason, the complete power supply circuit should be checked before installing a replacement box.

Information Required for Quotation

To confirm the correct YE500B334G02 power supply box, please provide:

• photo of the YE500B334G02 label
• photo of the internal power supply module
• ZWS or PWB model number
• input and output voltage information
• connector and wiring photos
• elevator model or installation position

This helps determine whether the required unit uses ZWS30-12/J, ZWS30-24/JA, PWB-6, PWB-655H, or another configuration.

Replacement Reminder

Do not replace YE500B334G02 only by the external box model.

The internal power supply specification is the most important confirmation point. Installing a power supply with the wrong output voltage or wiring arrangement may cause further control circuit problems.