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Caution You must connect the Catalyst 3550-24-DC switch only to a DC-input power source that
has an input supply voltage from –36 to –72 VDC. If the supply voltage is not in this
range, the switch might not operate properly or might be damaged.
Step 4
Using the ratcheting torque screwdriver,
torque each terminal block captive screw
(above the installed wire leads) to 4.5 lbf-in.
(72 ozf-in.).
Step 5
Insert the terminal block plug in the terminal
block header on the rear panel of the switch.
Step 6
Move the circuit-breaker handle for the DC power source to the on position.
Return
Negative
Return
Negative
Feed A
Feed B
36 - 72V
1 - 0.5A
A
B