Schneider PN072139P903 Thyristor Trigger Board – ATV61/71 Rectifier Control – Tested

Product Overview

Original Schneider PN072139P903 thyristor trigger and rectifier charging board for Altivar ATV61 and ATV71 series drives. It protects the DC bus capacitors from inrush current during power-up and is essential for stable drive operation. The PN072139P903 is the successor to the PN072139P902 and is part of the PN072139P90x series.

Key Features

• Genuine Schneider original – PN072139P903 thyristor trigger / rectifier board
• Compatible with Altivar ATV61 and ATV71 series drives
• AC to DC rectification with thyristor-based soft-start pre-charge control
• Replaces PN072139P902 – direct drop-in replacement
• Same family as PN072139P904 – verify original board marking
• Weight: ~1 kg
• Original pulled – no repair history

Specifications

Compatibility Note

• Compatible with Schneider Altivar ATV61 and ATV71 series drives
• This board is part of the PN072139P90x series – verify original board marking (P902, P903, or P904) before ordering
• CRITICAL: Nameplate photo required – different revisions may be used for different drive configurations
• If mismatched: Incorrect board selection may result in the drive failing to complete the pre-charge sequence, reporting “CRF2” (charging thyristor fault), “OU” (overvoltage), or “LU”
• This board receives trigger control signals from the CPU control board via optocoupler isolation
• Related part numbers in the same family: PN072139P902 (older version), PN072139P904 (newer version), PN072125P3
• Verify drive model, power rating, and original board marking before ordering
• Send drive nameplate photo for accurate matching

Quality Assurance

• Original pulled from working drive; tested functional with no repair history
• Actual photos sent before shipping
• Test video available upon request
• ESD anti-static packaging