PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-P4S is a 1-slot Power Supply Module for the PLC-5 system architecture. It operates on a nominal input voltage of 120V AC across a frequency band of 47 to 63 Hz. The unit delivers a regulated backplane output current of 8 Amps at 5V DC. It installs directly into a single slot of compatible 1771 universal I/O chassis assemblies.
The supply accommodates an operating input voltage range spanning 97 to 132V AC. Real input power measures 59 Watts, with an apparent input power rating of 89 VA. The module includes an internal 1.5 Amp, 250 Volt slow-blow fuse for electrical protection. It supports parallel power configurations using 1771-CT cabling paired with designated power units.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| Category | PLCs |
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| Product Line | PLC 5 |
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| GTIN | 10662468206041 |
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| Weight | 2.69 lbs (1.22 kg) |
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| Input Voltage Range | 97-132VAC |
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| Product Description | Power Supply module |
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| Input Frequency range | 47-63 Hz |
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| Nominal input voltage | 120V AC |
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| Maximum output current | 8 A |
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| Output voltage | 5VDC |
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| Module width | 1-slot |
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| Wire size | 14 AWG max (single wire only) |
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| Built-in fuse | 1.5A 250V Slow-blow |
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| 5-position Terminal Block | A/B P/N 941274-05; Wago 1 P/N 231-205/000-008 (1 included with each power supply) |
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| Module Type | Power Supply |
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| Nom Input Voltage | 120 Volts AC |
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| Max Real Input Power | 59 Watts |
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| Maximum Apparent Input Power | 89 VA |
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| Maximum Former Load | 148 VA |
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| Backplane Output Current | 8 Amps (at 5 Volts DC) |
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| Frequency | 47 to 63 Hertz |
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| Fuse | 1.5 Amps, 250 Volts, slow-blow |
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| Cabling | 1771-CT |
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| Paralleled | -LSP, -LWP, -XP, -ZP, -P4S |
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| Location | 1771 Chassis, 1 Slot |
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| UPC | 10662468206041 |
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TECHNICAL INFORMATION
Features
- Delivers 8 A backplane current at 5V DC to the chassis backplane.
- Accepts 97 to 132V AC input voltage at 47 to 63 Hz.
- Single-slot form factor mounts directly in standard 1771 universal I/O chassis.
- Features built-in overcurrent protection using a 1.5 A, 250 V slow-blow fuse.
- Supports paralleling configurations via 1771-CT cable connections.
TECHNICAL INFORMATION
Applications
- Power distribution for Allen-Bradley PLC-5 universal I/O chassis.
- Parallel redundant or shared-load power supply arrangements in 1771 racks.
TECHNICAL INFORMATION
Connections / Interfaces
- Equipped with a detachable 5-position terminal block for power wiring connections.
- Connects to parallel units using dedicated 1771-CT cabling.
- Direct backplane connector interfaces directly with the 1771 chassis bus.
TECHNICAL INFORMATION
Installation Guidelines
- Insert the module into a single slot of a compatible 1771 universal I/O chassis.
- Ensure input AC power lines conform to the 97 to 132V AC specification before connection.
- Use single conductors up to 14 AWG maximum for power terminal block wiring.
- Verify the built-in 1.5 A slow-blow fuse is operational prior to energizing.
TECHNICAL INFORMATION
Configuration Guidelines
- Ensure total chassis module current demand does not exceed the 8 A 5V DC limit.
- Connect 1771-CT cabling when setting up parallel configurations with supported power supplies.
TECHNICAL INFORMATION
Compatibility
- Compatible with 1771-A1B, 1771-A2B, 1771-A3B, and 1771-A4B Universal I/O chassis.
- Supports paralleling with -LSP, -LWP, -XP, -ZP, and -P4S power supply modules.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with 1771-A1B, 1771-A2B, 1771-A3B, and 1771-A4B Universal I/O chassis. Supports paralleling with -LSP, -LWP, -XP, -ZP, and -P4S power supply modules.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the output current rating of the Allen-Bradley 1771-P4S?
The 1771-P4S module provides an output current of 8 Amps at 5V DC directly to the backplane.
Which chassis types are compatible with the 1771-P4S module?
It is compatible with 1771-A1B, 1771-A2B, 1771-A3B, and 1771-A4B Universal I/O chassis models.
Can the 1771-P4S power supply be connected in parallel?
Yes, it supports parallel configurations using 1771-CT cabling paired with compatible 1771 power units.
What is the reference price for the 1771-P4S power supply?
Market observations show an indicative reference price of $119.00 USD for refurbished condition. This figure represents indicative market reference pricing only and is not a final quotation.
