Product Description
Allen-Bradley 1771-P4R Redundant Power Supply
The Allen-Bradley 1771-P4R is a redundant power supply module designed for use in Allen-Bradley PLC-5 I/O chassis. It provides a stable 5V DC output and supports N+1 redundancy for enhanced system reliability.
Technical Specifications
Input Characteristics
| Attribute |
1771-P4R |
1771-P6R |
| Input Voltage |
120V AC |
220V AC |
| Input Voltage Range |
97–132V AC RMS |
194–264V AC RMS |
| Frequency |
47–63 Hz |
47–63 Hz |
| Fuse |
1.5A, 250V Slow-Blow |
1.5A, 250V Slow-Blow |
Output Characteristics
| Attribute |
Specification |
| Output Voltage |
5V DC |
| Output Current |
8A |
| Maximum System Output Current @ 60°C (N+1 Redundancy) |
8A (2-unit system)
14A (3-unit system)
20A (4-unit system) |
Physical & Wiring Specifications
| Attribute |
Specification |
| Size |
1 I/O slot per module |
| Weight |
2 lbs (0.84 kg) |
| Wire Size |
14 AWG maximum (single wire only) |
| Wire Category |
21 |
| Wiring Blocks |
AC Power: A-B Part No. 941274-05 (Wago PN 231-205/000-008)
Relay: A-B Part No. 941274-03 (Wago PN 231-203/000-008) |
Environmental Specifications
| Attribute |
Specification |
| Operating Temperature |
0 to 60°C (32 to 140°F) |
| Storage Temperature |
-40 to 85°C (-40 to 185°F) |
| Relative Humidity |
5 to 95% (non-condensing) |
Alarm Relay Rating
| Attribute |
Specification |
| Alarm Relay Voltage |
250V AC |
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