Juniper PTX5000 Hardware Manual page 108

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• Twenty-one monitored electronic fuses for the fan trays, Control Boards, and FPCs.

NOTE: There are no mechanical fuses in the PDU to be replaced. For output voltage, current

protection is provided by electronic fuses, hot-swap circuits, or ORing circuit. Electronic fuses

and hot-swap circuits also provide current limitation.

NOTE: The PDUs contain no fans, but are cooled by the fans in the power supply modules.

120-A DC PDU Components

NOTE: The 120-A DC PDUs have circuit breakers and over current protection.

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