Allen-Bradley 81004-286-52-R PowerFlex 7000 400A SGCT Assembly Matched Pair

2026-04-21T00:00:06-07:00

Type: SGCT Assembly
Price: 66.00

Product Overview

The 81004-286-52-R functions as a critical power semiconductor component specifically for the Allen-Bradley PowerFlex 7000 Medium Voltage (MV) Drive. This 400A Symmetrical Gate Commutated Thyristor (SGCT) assembly comes as a Matched Pair to ensure balanced current distribution and synchronized switching across the drive's power modules. It manages high-power switching states to maintain precise motor control and energy efficiency in heavy-duty industrial applications. We supply this assembly in 100% Brand New condition, meeting the stringent electrical tolerances required for medium voltage power electronics.

Technical Specifications

Component Type: 400A SGCT Assembly (Symmetrical Gate Commutated Thyristor)

Configuration: Matched Pair (Two synchronized units)

Application Compatibility: PowerFlex 7000 Medium Voltage Drives

Amperage Rating: 400 Amps

Category: Drive Power Electronics / Circuit Board

Shipping Weight: 4.70 lbs (2.13 kg)

Drive Voltage Class: Medium Voltage (MV)

Engineering Advantages

The 81004-286-52-R solves high-power conversion challenges through precision matching and robust thermal engineering:

Synchronized Switching Performance: The "Matched Pair" designation ensures that both SGCTs exhibit nearly identical electrical characteristics. This synchronization prevents uneven current sharing, which typically leads to localized overheating and premature failure of the power bridge.

Optimized Power Density: The 400A rating provides the necessary thermal and electrical headroom for high-torque applications. The assembly maintains low switching losses, reducing the overall heat load on the drive's liquid or air-cooling system.

Direct Integration for MV Systems: This board integrates seamlessly into the existing PowerFlex 7000 gate driver architecture. Its mechanical layout ensures a secure fit within the power cell, facilitating high-pressure contact required for effective current transfer and heat dissipation.

Enhanced Drive Uptime: Replacing worn power semiconductors with Brand New matched assemblies eliminates the unpredictability of used or mismatched components. This proactive approach prevents catastrophic drive "faults" and ensures the longevity of the entire inverter section.

FAQs

Why must I replace these as a "Matched Pair"?

Medium voltage drives require balanced electrical loads across all phases. If you install mismatched SGCTs, one unit may carry more current than the other, triggering overcurrent faults or damaging the power module due to thermal stress.

Is this part suitable for both air-cooled and liquid-cooled PowerFlex 7000 drives?

The 81004-286-52-R primarily serves the 400A power structures found in PowerFlex 7000 frames. Always verify your drive's specific amperage and frame size against the technical manual to ensure compatibility.

What precautions should I take during installation?

Power electronics require strict adherence to torque specifications for mounting to the heatsink. Use a calibrated torque wrench and follow ESD (Electrostatic Discharge) safety protocols to prevent damaging the sensitive gate circuitry on the board.

Is this a Brand New original component?

Yes. We guarantee this 81004-286-52-R is 100% Brand New and original. In medium voltage applications, using new semiconductors is vital because internal degradation often remains invisible until the system operates under full load.