Filter
Top Products
3-30
Cisco 3600 Series Routers Hardware Installation Guide
OL-2056-05
Chapter 3 Installing the Router
Power Connections
Wiring the DC-Input Power Supply in Cisco 3631 Routers
If your router has a DC-input power supply, follow the directions in this section for proper wiring.
DC Wiring Requirements
A Cisco 3631 router with a DC-input power supply requires copper wire and crimp-type terminals for
the power connections. Table 3-2 summarizes the wiring requirements.
You can connect a single DC power source to either the A input or the B input. If there are dual power
sources, connect one source to the A input and one source to the B input; both sources must be the same
polarity and voltage.
Wiring Procedure for DC Input
To connect the router to a DC power source, perform the following steps:
Step 1 Remove power from the DC circuit. To ensure that power is removed from the DC circuit, locate the
circuit breaker for the DC circuit, switch the circuit breaker to the OFF position, and tape the
circuit-breaker switch in the OFF position.
Tip Secure all power cabling when installing this unit to avoid disturbing field-wiring connections.
Step 2 Strip the wires to the appropriate length for the terminals. The strip length is 1/8 to 3/16 inch (3 to 5 mm)
for Molex number 19193-0009 and for AMP number 324159-0 terminals.
Step 3 Crimp the terminals to the DC power input wires.
Table 3-2 DC Wiring Requirements for Cisco 3631 Routers
Installed Power Supply DC Input
DC Input
Wire Size
Safety Ground
Wire Size Wire Terminal (Lug)
Overcurrent
Protection
Nominal 24/48 VDC
1
Identified by a printed
label near the DC wire
terminals:
1. The input voltage tolerance limits for nominal 24/48-V power supplies are 18 and 72 VDC.
24 - 36 V, 8 A,
positive or negative,
single or dual sources
AWG 14
(2.0 mm
2
)
AWG 14
(2.0 mm
2
)
AMP part number 324159-0,
or equivalent
15 A
maximum
36 - 60 V, 4 A,
positive or negative,
single or dual sources
AWG 18
(1.0 mm
2
)
AWG 14
(2.0 mm
2
))
Source DC: Molex part
number 19193-0009, or
equivalent
Ground: AMP part number
324159-0, or equivalent
15 A
maximum
Nominal 48 VDC
2
Identification stamped
near the DC wire
terminals:
2. The input voltage tolerance limits for nominal 48-V power supplies are 38 and 72 VDC.
48 - 60 V, 4 A,
positive or negative,
single or dual sources
AWG 18
(1.0 mm
2
)
AWG 14
(2.0 mm
2
)
Source DC: Molex part
number 19193-0009, or
equivalent
Ground: AMP part number
34119, or equivalent
15 A
maximum
INPUT +/-
24-36V
36-60V
8 A
4 A
INPUT -48 TO
-60V 4 A