Specifications – Rockwell Automation 1768-PA3_PB3 CompactLogix Power Supplies Installation Instructions User Manual
Page 27

1768 CompactLogix Power Supplies 27
Publication 1768-IN001B-EN-P - July 2006
Specifications
1768-PA3 and 1768-PB3, CompactLogix Power Supplies
Attribute
1768-PA3
1768-PB3
Efficiency
75% Typical
80% Typical @ 24V dc
Enclosure Type Rating
None (open-style)
None (open-style)
Input Voltage Range
85…265V ac
108…132V dc
16.8-31.2V dc
Input Frequency Range
47…63 Hz (85…265V ac)
N/A
Input Power, Max
120 VA/120 W
112 W @ 24V dc
Inrush Current, Nom
25 A @ 85…132V ac
50 A @ 195…265V ac
25 A @ 108…132V dc
30 A @ 16.8...31.2V dc
(2)
Inrush Current, Max
50 A @ 85…132V ac
80 A @ 195…265V ac
50 A @ 16.8...31.2V dc
North American Temp Code
T4
T5
Power Dissipation, Max
30 W
22 W @ 24V dc
Isolation Voltage
250V, Reinforced Insulation Type,
input to system and 24V dc AUX,
Tested at 4250V dc for 60 s
150V, Basic Insulation Type, 24V dc
AUX to system, Tested at 2200V dc for
60 s
250V, Reinforced Insulation Type,
input to system and 24V dc AUX,
Tested at 4250V dc for 60 s
150V, Basic Insulation Type, 24V dc
AUX to system, Tested at 2200V dc
for 60 s
Internal Overcurrent
Protection
Non-replaceable fuse is soldered in place.
Recommended External
Overcurrent Protection
4…6 A @ 28.5…36.7 A
2
S
8...12 A @ 166...250 A
2
S
Overcurrent Protection, Max
15 A, user supplied
Wire Size, Input Power
Terminal
14 AWG (2.5 mm
2
) solid or stranded copper wire rated at 75 °C (167°C) or
greater, 1.2 mm (3/64 in.) insulation maximum
Wire Size, Output Power
Terminal
2.5 mm
2
(14 AWG )… 0.25 mm
2
(22 AWG) solid or stranded copper wire rated
at 75 °C (167 °C) or greater, 1.2 mm (3/64 in.) insulation maximum
Wiring Category
(1)
1- on power ports
Conductor Screw Torque
0.6 Nm (5 lb-in)
Dimensions (HxWxD),
Approx.
131.25 x 132.75 x 105.50 mm (5.17 x 5.23 x 4.15 in.)
Weight, Approx.
0.98 kg (2.15 lb)
1.01 kg (2.22 lb)
Continuous Output Power
90 W, Max
24V dc to backplane: 3.5 A
24V dc to user accessible terminal block: 0.25 A
Continuous Output Power
6W, Min
24V dc to backplane: 0.25 A
24V dc to user accessible terminal block: 0.0 A