Description:
The A50B50 is a high‑frequency rectifier module originally manufactured under the Lorain / Reliance Electric brand for use in telecom and critical power DC systems. These rectifiers convert AC utility power to regulated DC output (typically −48 VDC) used to supply battery plants, telecom equipment, central offices, remote terminal power, and data center DC bus systems. It is a 50 amp rectifier that can be combined with additional modules to scale power capacity (e.g., up to 600 A in larger shelves) and configured for redundancy (e.g., N+1). The unit is designed for easy front access installation, maintenance, and monitoring, with LED indicators and circuit protection built in. A50B50 modules are commonly found in legacy DC power plants and continue to be serviced through aftermarket repair or upgrade solutions.
Key Features
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Manufacturer: Lorain (Reliance Electric / legacy DC systems)
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Part Number: A50B50
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Module Type: High‑Frequency DC Rectifier
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Nominal Output Current: ~50 A / module
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Application: DC power conversion for telecom, central office, remote sites
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Form Factor: Plug‑in rectifier module, front‑accessible
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Protection: Integrated circuit breaker protection and LED status indicators
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Cooling: Front‑to‑rear forced air (fan cooled)
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Monitoring: Local control/monitoring and remote control options via microprocessor controller
Technical Characteristics
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Modular Scalability: Multiple A50B50 units can be combined for higher current capacity and redundancy.
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Indicators: AC‑On indicator, rectifier failure LED, fan failure LED, current bar graph display.
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Controls: Local and remote control supported via integrated controller.
