Mx104 Dc Power Specifications; Table 26: Dc Power Electrical Specifications - Juniper MX104 Hardware Manual

MX104 3D Universal Edge Router Hardware Guide
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MX104 DC Power Specifications

162
NOTE: In North America, AC power cords must not exceed approximately
14.75 ft (4.5 m) in length, to comply with National Electrical Code (NEC)
Sections 400-8 (NFPA 75, 5-2.2) and 210-52, and Canadian Electrical Code
(CEC) Section 4-010(3). You can order AC power cords that are in compliance.
CAUTION: Power cords and cables must not block access to device
components or drape where people could trip on them.
NOTE: Use power cords rated up to 149° F (65° C) for ambient temperatures
up to 140° F (60° C).
Connecting AC Power Cords to the MX104 Router on page 53
Replacing an MX104 AC Power Supply on page 96
MX104 AC Power Electrical Safety Guidelines and Warnings on page 141
MX104 AC Power Specifications on page 159
The MX104 power supply contains DC power terminals to connect power to the router
and supports the specifications shown in

Table 26: DC Power Electrical Specifications

Item
Power Supplies
DC input voltages
DC input currents
Maximum power supply output
System
Maximum output power
Each DC power supply has a single DC input (24, –48, or –60 VDC and return) that
requires a dedicated circuit breaker. We recommend that you use a facility circuit breaker
rated for 40 A @ 24 VDC. Doing so enables you to operate the router in any configuration
Table 26 on page 162.
Specification
18 to 30 VDC; nominal 24 VDC
–39 to –56 VDC; nominal 48 VDC
–39 to –72 VDC; nominal 60 VDC
40 A @ 24 VDC
20 A @ –48 VDC
15 A @ –60 VDC
800 W
800 W
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