DC Power (-48 V) Circuit Breaker Requirements for the MX2020 Router | 215
MX2020 DC Power Distribution Description | 201
DC Power Cable Specifications for the MX2020 Router | 216
Site Electrical Wiring Guidelines for MX Series Routers
MX2000 DC Power Distribution Module (240 V China) Description
In the DC (240-V China) power configuration, the MX2000 router contains up to four DC PDMs (240-V
China) located at the rear of the chassis in slots PDM0/Input0 through PDM3/Input1 (bottom to top). A
minimum of one PDM is required per subsystem (two PDMs per MX2020 chassis) for nonredundant power.
The DC PDMs provide power interface to nine power supply modules (PSMs).
Four PDMs provide full redundancy for the MX2020 router. In a redundant configuration, a total of
thirty-six (9-feed DC PDMs) are supported.
NOTE: The power backplane for a subsystem distributes regulated 52 VDC to all boards supplied
by that subsystem.
Each DC PDM (240-V China) has nine DC inputs, (see Figure 47 on page 109).
Figure 47: MX2000 DC PDM (240 V China)
RELATED DOCUMENTATION
MX2000 DC Power Distribution Module (240 V China) LEDs | 111
MX2000 Router Grounding Specifications | 138
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