Dc Power Supply Input Fuses - Juniper MX2020 Hardware Manual

Table 71: DC PSM Electrical Specifications Per Input Configurations (continued)
Item
Redundancy
DC input voltage
DC nominal input current
@ 48 VDC IN
Maximum DC output @
52 VDC (upper and lower
cage)
DC standby output @ 5
VDC
Efficiency
NOTE: This value is
within load range
17-67% and nominal
input voltage at 48 VDC.

DC Power Supply Input Fuses

The DC PSM has a power supply input fuse in the negative terminals of both INP0 and INP1.
Table 72 on page 206 lists the electrical specification for this fuse.
Table 72: Electrical Specifications for the DC Power Supply Input Fuse
Electrical Characteristic
Fuse
Voltage Rating
Ampere Range
Interrupting Rating
Approvals
Specification
N+1 PSM
N+N feed redundancy
-40 VDC to -72 VDC
49 A (for 2100 W output)
59 A (for 2500 W output)
2500 W
30 W
91%
Value
Littelfuse FUSE M P 80A 170VDC E, P/N TLS080LS
170 Vdc
80 A
100 kA
UL Recognized (File: E71611)
206