POWEREX – 12-810096-00-R3 / ND431625 – Dual Thyristor SCR Power Module – 1600V 250A – Reclaimed Part

Powerex — 12-810096-00-R3 / ND431625 Thyristor Power Module

What it is

The Powerex 12-810096-00-R3 is a heavy-duty 1600 V, 250 A dual phase-control thyristor module based on the Powerex ND431625 family. Designed for high-current industrial power control, this module combines two SCR power devices in a rugged, electrically isolated block suitable for UPS input stages, controlled rectifiers, AC regulators, soft starters, and other high-power conversion equipment.

With approximately 393 A RMS on-state capability and non-repetitive surge current approaching 8.8 kA for a single 60 Hz cycle, the module is engineered to tolerate the substantial inrush currents and transient loading commonly encountered in critical-power and industrial systems.

The ND43-style package uses an electrically isolated baseplate and compression-bonded semiconductor construction to provide efficient heat transfer into the equipment heatsink while maintaining electrical isolation from the chassis. Heavy-duty power connections and dedicated gate terminals make the module well suited for service replacement in legacy high-current equipment.

The 12-810096-00-R3 marking may represent an equipment-specific revision or customer part number associated with the underlying ND431625 family. When replacing an existing module, both the complete R3 part number and the semiconductor module configuration should be verified against the original component.

At-a-Glance

• Manufacturer: Powerex
• Part Number: 12-810096-00-R3
• Module Family: ND431625
• Voltage / Current: 1600 V / 250 A IT_AV
• RMS Current: Approximately 393 A IT_RMS
• Topology: Dual phase-control thyristor / SCR module
• Surge Capability: Approximately 8.8 kA, one-cycle 60 Hz surge
• Mounting: Screw-mount ND43-style isolated-base power block
• Power Connections: Heavy-duty screw/stud terminals
• Use Cases: UPS input bridges; controlled rectifiers; soft starters; AC regulators; industrial power controls
• Condition: Reclaimed Part

Features

• 1600 V blocking capability — Designed for demanding industrial line-voltage and power-conversion applications.
• High continuous current — 250 A average on-state rating with approximately 393 A RMS capability.
• High surge headroom — Approximately 8.8 kA one-cycle surge capability helps withstand startup and fault transients.
• Rugged switching performance — High di/dt capability and strong dV/dt immunity for phase-control applications.
• Dual SCR construction — Two controlled rectifier elements incorporated into one industrial power block.
• Isolated baseplate — Simplifies heatsink mounting while maintaining electrical separation from the chassis.
• Low thermal impedance — Compression-bonded construction provides an efficient thermal path for high-current operation.
• Legacy equipment support — Particularly useful for repairing UPS and industrial equipment where the original semiconductor assembly is obsolete or difficult to source.

Technical Specifications

Compatibility / Representative Uses