Juniper MX204 Hardware Guide

Table 31: MX204 Router DC Router Power Requirements at Maximum Temperature (55° C)
Power Requirement
(Watts) with 90%
Efficiency
Power Requirement at 55°
C (Watts)Chassis Configuration
311 W280 WFully configured chassis running at high activity
Calculating System Thermal Output
After you have calculated the power consumption for your configuration, you can use that information to
determine the system thermal output (BTUs per hour). To do so, multiply the power consumption in watts
by 3.41.
For example, in Table 30 on page 72 we calculated the power consumption for a fully configured chassis running at
high activity at 25° C typical temperature to be 240 W. Using that information we can calculate the system thermal
output for the configuration:
Power consumption in watts * 3.41 = system thermal output in BTU/hr
240 W * 3.41 = 818.4 BTU/hr
SEE ALSO
MX204 Power System Description | 33
Replacing an MX204 DC Power Supply | 130
DC Power Circuit Breaker Requirements for the MX204 Router | 43
DC Power Source Cabling for MX204 Router | 44
DC Power Cable Specifications for MX204 Router | 45
General Safety Guidelines and Warnings | 147
General Electrical Safety Guidelines and Warnings | 172
Prevention of Electrostatic Discharge Damage | 173
73

Juniper MX204 Specifications

General

Cooling type	Active
Product color	Gray
Rack capacity	1U
Rack mounting	Yes
Number of fans	3 fan(s)
AC input voltage	100 - 240 V
Number of power supply units	2
Operating altitude	0 - 1828 m
Operating temperature (T-T)	0 - 55 °C
Operating relative humidity (H-H)	5 - 90 %

Weight and Dimensions

Depth	475 mm
Width	447 mm
Height	44.5 mm
Weight	10500 g