CHAPTER 12
DC Power Requirements, Specifications, and
Guidelines
IN THIS CHAPTER
MX2020 DC Power Requirements | 193
MX2020 DC Power Distribution Description | 201
MX2020 DC Power Distribution (240 V China) Description | 203
MX2000 Router DC Power Subsystem Electrical Specifications | 205
MX2000 Router DC (240 V China) Power Subsystem Electrical Specifications | 207
Determining DC Power Requirements for Your MX2020 Router | 209
DC Power (-48 V) Circuit Breaker Requirements for the MX2020 Router | 215
DC Power (240 V China) Circuit Breaker Requirements for the MX2000 Router | 216
DC Power Cable Specifications for the MX2020 Router | 216
MX2020 DC Power Requirements
Table 70 on page 194 lists the FRU power requirements for SFBs, CB-REs, MPCs, and MICs. In addition,
Table 70 on page 194 lists the MPC power requirements with MICs and optics at various operating
temperatures.
Typical power represents power under certain temperatures and normal operating conditions.
For PDMs with 60 A feeds, we recommend that you select the 60 A switch for each input.
For PDMs with 80 A feeds, we recommend that you select the 80 A switch for each input.
NOTE: The 240 V China DC PDMs do not have a switch selection.
If you do not plan to provision as recommended above, you can use the information in Table 70 on page 194
to calculate the power consumption for your hardware configuration.
193
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