81003-438-51-R Allen-Bradley High Current SCR Rectifier
Manufacturer: ABB
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Part Number: 81003-438-51-R
Condition：New with Original Package
Product Type: SCR Rectifier Assembly
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Description
Product Overview
The Allen-Bradley 81003-438-51-R is a high-current SCR rectifier assembly replacement kit designed for use in Allen-Bradley industrial drive and power control systems. This assembly integrates silicon-controlled rectifiers (SCRs) to convert AC input power into controlled DC output for high-power applications.
Rated at 815 A, the 81003-438-51-R is intended as a direct replacement rectifier assembly for specific Allen-Bradley drive platforms. The ruggedized “-R” revision supports reliable operation in electrically demanding and high-thermal environments.
Functional Description
The 81003-438-51-R performs controlled rectification by regulating conduction angles of SCR devices. This allows precise DC power delivery to downstream drive sections, DC buses, or controlled loads.
The assembly is self-contained, mechanically integrated, and designed to interface directly with compatible Allen-Bradley power assemblies. It does not include logic control, communication interfaces, or energy storage components.
Technical Specifications
| Parameter | Details |
|---|---|
| Model | 81003-438-51-R |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Type | SCR Rectifier Assembly |
| Category | Drives |
| Subcategory | Rectifier Assembly |
| Rectifier Technology | Silicon-Controlled Rectifier (SCR) |
| Continuous Current Rating | 815 A |
| Assembly Type | Replacement parts kit |
| Mounting | Drive chassis / power frame mounted |
| Electrical Function | AC-to-DC controlled rectification |
| Weight | 2.0 lb (0.9 kg) |
| Manufacturer Status | Discontinued |
| Country of Origin | USA |