Alcatel-Lucent 3AL81205AAAA01 Fan Module

The Alcatel-Lucent 3AL81205AAAA01 Fan Module is a forced-air cooling assembly engineered for integration into carrier-grade optical and packet transport chassis. It delivers active thermal management for high-density line cards, switching matrices, and power distribution units by maintaining prescribed operating temperature thresholds within enclosed telecommunications shelves. The unit incorporates multiple DC brushless fan arrays arranged in redundant airflow configurations to sustain cooling capacity during individual fan failure events. Airflow velocity is dynamically regulated through closed-loop communication with the shelf management controller, which continuously polls internal temperature sensors and adjusts fan RPM accordingly. Power is supplied via a hot-swappable backplane connector at nominal −48 V DC, while digital telemetry interfaces provide real-time monitoring of rotational speed, operational status, and fault conditions through I²C or SNMP-managed pathways. Mechanical construction includes standardized mounting guides, vibration-damping isolators, and conductive EMI gaskets to meet NEBS GR-63 and ETSI EN 300 019 environmental and safety requirements for central office deployments. Field maintenance procedures are supported without service disruption, as the module can be extracted and replaced while adjacent circuit packs remain powered. Validated for use in Alcatel-Lucent 1660/1670/1850 series platforms and compatible shelf architectures requiring redundant, sensor-driven airflow control in controlled data center and telecommunications equipment rooms.