M40E Router Power Requirements; Table 27: M40E Power System Electrical Specifications - Juniper M40E Hardware Manual

M40e Multiservice Edge Router Hardware Guide
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M40e Router Power Requirements

274
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M40e Router Power Requirements on page 274
M40e AC Power, Connection, and Power Cord Specifications on page 277
M40e DC Power, Connection, and Cable Specifications on page 279
The router uses either AC or DC power. There are two load-sharing, pass-through power
supplies located at the bottom rear of the chassis, as shown in "M40e Chassis Description"
on page 8. The power supplies connect to the midplane, which distributes power to
router components according to their individual voltage requirements. When the power
supplies are installed and operational, they automatically share the electrical load. If a
power supply stops functioning for any reason, the remaining power supplies instantly
begin providing all the power the router needs for normal functioning and can provide
full power indefinitely.
CAUTION: Mixing AC and DC power supplies is not supported and prevents
the router from booting. If two power supplies are installed, they must either
both be AC or both DC.
A circuit breaker box must be installed on a DC-powered router, whereas a
circuit breaker is incorporated into each AC power supply.
Table 27 on page 274 lists the AC and DC power system electrical specifications. Table
28 on page 275 lists the power requirements for various hardware components when the
router is operating under typical voltage conditions. For PIC power requirements, see the
M40e Multiservice Edge Router PIC Guide.

Table 27: M40e Power System Electrical Specifications

Item
AC input voltage
AC input line frequency
AC system current rating
Specification
Operating range: 180 to 264 VAC
Nominal: 200 VAC, 208 VAC, 220 VAC, 240 VAC
47 to 63 Hz
15 A @ 200 VAC
13 A @ 240 VAC
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