2120731 Huawei Huawei DCDU Series Power Supply

The Huawei 2120731 is a DCDU-12B (DC Distribution Unit), a power distribution component designed to manage and distribute DC power within Huawei telecommunications equipment cabinets. This unit handles the distribution of -48V DC power from rectifier systems to various loads within the cabinet, providing circuit protection and monitoring capabilities.

The DCDU-12B is typically deployed in Huawei base station sites, transmission equipment rooms, and data centre environments where reliable DC power distribution is essential. It forms part of the power subsystem in Huawei’s telecommunications infrastructure solutions, working alongside rectifier modules and battery backup systems.

This is a legacy power distribution unit from Huawei’s established range of DC power infrastructure products. While newer DCDU variants have since been released, the DCDU-12B remains in active service across many deployed networks and is sought after for maintenance, expansion, and replacement purposes.

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