Juniper PTX5000 Hardware Manual page 66

• Front-to-back airflow direction.
• Single output enable or disable switch to switch on or switch off the output of the PDU.
• Reverse polarity protection—The PDU or PSMs are not damaged even if the input voltage is reversed
for an indefinite period of time.
• Hot-pluggable and hot-removable.
• No power zoning for PSMs.
High Capacity Delta AC PDU Components
Each High Capacity Delta AC PDU has the following components (see
• A metal retaining bracket located on the lower right to connect the delta AC power cord to the PDU.
• A metal wiring compartment that contains the AC input terminal block and ground. The AC terminal
block consists of three input terminals labeled L1, L2, and L3.
• A power input cord selection switch inside the wiring compartment to select the input power to the
PDU—that is, 60 A, 100 A, or 150 A.
• The power switch provides power to the power supply modules.
• LEDs to monitor the status of the PDU.
Figure 22 on page 49):
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