Schneider NHA50381-03 Power Driver Board – ATV610/630/340/930

What Is the NHA50381-03?

The Schneider Electric NHA50381-03 is a VFD power / driver board used in selected Altivar variable frequency drive configurations.

It is an internal electronic component intended for industrial inverter maintenance, repair and replacement applications.

The NHA50381 board series is listed for selected ATV610, ATV630, ATV340 and ATV930 drive applications with power ratings of 30kW, 37kW and 45kW.

This unit is offered as tested stock for customers requiring a replacement Schneider inverter power board.

Before ordering, verify the complete board part number and drive model to ensure correct replacement compatibility.

Key Specifications

Specification	Details
Part Number	NHA50381-03
Brand	Schneider Electric
Product Type	VFD Power / Driver Board
Drive Series	ATV610 / ATV630 / ATV340 / ATV930
Application Power Ratings	30kW / 37kW / 45kW
Condition	Tested Stock
Testing Status	Tested; confirm available test details before ordering
Application	Industrial VFD Maintenance and Replacement

Applications and Compatibility

The NHA50381 board series is listed for selected Schneider Altivar variable frequency drive applications.

The referenced drive families include:

• ATV610 – selected drive configurations.
• ATV630 – selected drive configurations.
• ATV340 – selected drive configurations.
• ATV930 – selected drive configurations.

The listed application power ratings include 30kW, 37kW and 45kW.

Important Compatibility Checks:

Before ordering, verify:

• Confirm that the original board carries the exact part number NHA50381-03.
• Check the complete ATV610 / ATV630 / ATV340 / ATV930 drive model.
• Verify the drive power rating and voltage class.
• Compare the board revision and identification markings.
• Check connector positions and pin configuration.
• Compare the original board layout and mounting points.

Do not assume that every 30kW, 37kW or 45kW drive uses the same power board.

ATV330 compatibility is not independently confirmed in the available product references. Please verify the original equipment configuration before considering this application.

How to Identify the Correct Replacement Board

When replacing a power / driver board, carefully compare the original board with the replacement unit.

Check the following details:

• Part number printed on the original PCB.
• Board revision and identification labels.
• Connector positions and pin configuration.
• Electronic component layout.
• Mounting positions and electrical connections.
• Complete drive model and nameplate information.

If you are unsure about compatibility, send us clear photos of the existing board and the drive nameplate before ordering.

When Should the Power / Driver Board Be Replaced?

A power / driver board may require inspection when the inverter experiences abnormal power-stage operation or related electronic faults.

Before replacing the board:

• Inspect the board for visible damage or burnt components.
• Check connectors and electrical connections.
• Inspect related power electronic components.
• Review the drive fault history and diagnostic results.
• Verify that the replacement part number matches the original board.

A drive fault does not automatically mean the power / driver board is defective. Other power circuit components and connections should also be inspected by qualified personnel.

Condition and Testing

This product is offered as tested stock for industrial inverter maintenance and replacement.

Please contact us for available testing details, actual product photos and current stock availability.

Confirm the physical condition and testing scope before purchase.

Frequently Asked Questions

What is the NHA50381-03 used for?

The NHA50381-03 is a Schneider VFD power / driver board offered for selected Altivar variable frequency drive applications.

Which drive series are associated with the NHA50381 board series?

Available supplier references associate the NHA50381 board series with selected ATV610, ATV630, ATV340 and ATV930 configurations.

Which power ratings are associated with this board series?

The listed application ratings include 30kW, 37kW and 45kW. Always verify the complete drive reference and original board number before ordering.

Is NHA50381-03 the same as NHA50381-01 or NHA50381-02?

No. These are different part number versions. Do not assume they are interchangeable without checking the original board identification and hardware configuration.

Is this power / driver board tested?

This listing is for tested stock. Please request available inspection and functional testing details before purchase.

Need Help Confirming Compatibility?

Looking for a replacement Schneider NHA50381-03 power / driver board?

Send us:

• A clear photo of the existing board.
• A close-up photo of the NHA50381-03 identification label.
• The complete ATV610 / ATV630 / ATV340 / ATV930 drive nameplate.
• The drive model, power rating and voltage.
• Your required quantity.

Contact us for product identification, compatibility assistance and quotation.