Allen-Bradley 81001-355-71-R 1 SCR 350A 6.5KV W/CONN-PKG

Description

The Allen-Bradley 81001-355-71-R is a high-power Silicon Controlled Rectifier (SCR) thyristor component designed for medium voltage variable frequency drives and industrial power conversion systems. It functions as a solid-state controlled semiconductor switch to manage high-capacity power rectification, phase control, and current regulation. This specific part is supplied with its corresponding connector package (W/CONN-PKG) to ensure secure, low-resistance electrical connections within heavy-duty power assemblies. Engineered to meet the demanding requirements of industrial power environments, it provides reliable switching performance and robust voltage blocking capabilities.

Features

• High-Voltage Rating: Designed to handle demanding voltage blocking applications up to 6.5KV.
• Integrated Connector Package: Includes the matching electrical connector package for secure terminal interfacing and minimized thermal-contact degradation.
• Hermetic and Durable: Manufactured to withstand thermal cycling and high-current demands within closed drive cabinets.

Applications

• Phase control and rectification in PowerFlex medium voltage drives.
• Soft starters and high-capacity static transfer switches.
• Heavy industrial motor control systems across mining, oil and gas, and power generation sectors.

Technical Specifications

Installation Guidelines

• Electrostatic Discharge Precautions: Implement full ESD preventative measures, including grounded wrist straps and conductive mats, during handling and installation.
• Thermal Management: Apply the specified thermal interface material (heatsink compound) uniformly before mounting to the cooling assembly to ensure proper heat dissipation.
• Torque Specifications: Adhere strictly to the manufacturer's recommended mounting torque limits to prevent structural deformation of the SCR housing while ensuring adequate contact pressure.
• Capacitor Discharge: Confirm that all DC bus and power storage capacitors are completely discharged and follow proper lockout/tagout (LOTO) protocols before servicing the hardware.