Juniper Networks MX240 AC Power Circuit Breaker Specifications, AC Power Cord Specifications

MX240 Ethernet Services Router Hardware Guide

Base router (with fan tray at normal speed and two power supplies) + 1 SCB + 1 Routing Engine + 1 DPC =

270 W + 176 W + 106 W + 367 W = 919 W

■Maximum AC-powered low-line configuration @ 110 V with one host subsystem and a third DPC in the multifunction slot (includes 85% efficiency):

Base router with four power supplies + fan tray at full speed + 1 SCB + 1 Routing Engine + 3 DPCs

520 W + 24 W + 176 W + 106 W + 3 (429 W) =

520 W + 24 W + 176 W + 106 W + 1287 W = 2113 W

■Minimum AC-powered high-line configuration @ 220 V (includes 85% efficiency):

Base router with one power supply + fan tray at normal speed + 1 SCB + 1 Routing Engine + 1 DPC =

195 W + 176 W + 106 W + 367 W= 844 W

■Maximum AC-powered high-line configuration @ 220 V with one host subsystem and a third DPC in the multifunction slot (includes 85% efficiency):

Base router with two power supplies + fan tray at full speed + 1 SCB + 1 Routing Engine + 3 DPCs =

350 W + 24 W + 176 W + 106 W + 3 (429 W)=

350 W + 24 W + 176 W + 106 W + 1287 W= 1943 W

■System thermal output (based on maximally configured AC-powered router @

110 V):

Watts AC PEM * 3.41 = BTU/hr

2113 W) * 3.41 = 7205 BTU/hr

AC Power Circuit Breaker Specifications

We recommend that you use a dedicated facility circuit breaker rated for

15 A (250 VAC) minimum for each AC power feed, or as permitted by local code. Doing so enables you to operate the router in any configuration without upgrading the power infrastructure.

AC Power Cord Specifications

Each AC power supply has a single AC appliance inlet located on the power supply that requires a dedicated AC power feed. Most sites distribute power through a main conduit that leads to frame-mounted power distribution panels, one of which can be located at the top of the rack that houses the router. An AC power cord connects each power supply to the power distribution panel.

Detachable AC power cords, each 2.5 m (approximately 8 ft) long, are supplied with the router. The C19 appliance coupler at the female end of the cord inserts into the AC appliance inlet coupler, type C20 (right angle) as described by International Electrotechnical Commission (IEC) standard 60320. The plug at the male end of the power cord fits into the power source receptacle that is standard for your geographical location.

174■ AC Power Specifications and Requirements