1771-P4R | Allen-Bradley Redundant Power Supply 5V DC 16A – Original Spare Parts

1771-P4R Allen-Bradley Redundant Power Supply — Industrial-Grade Reliability for PLC-5 Systems

As a procurement manager sourcing critical spare parts for continuous-process facilities, you need components that simply do not fail. The Allen-Bradley 1771-P4R is a factory-sealed, 100% Brand New and Factory Sealed redundant power supply purpose-built for the PLC-5 I/O chassis platform. Delivering a regulated 5V DC output at 16A continuous, the 1771-P4R employs an N+1 hot-standby architecture that automatically transfers load in under 20 ms liminating unplanned downtime before operators even notice a fault. This is a 100% Original and Brand New unit, sourced directly through authorized distribution channels and verified against Allen-Bradley factory specifications.

Unplanned shutdowns in Oil & Gas, Power Generation, or Pharmaceutical manufacturing can cost tens of thousands of dollars per hour. The 1771-P4R addresses this pain point by providing seamless failover protection within the existing PLC System infrastructure, making it the preferred choice for engineers maintaining legacy Control Module networks where EOL (End-of-Life) replacement parts are increasingly scarce. Whether you are expanding an existing Industrial Automation network or replacing a degraded supply in a Safety Instrumented System (SIS) environment, this Original New module integrates without firmware changes or chassis modifications.

With fast global logistics, a 12-month warranty, and full traceability documentation available on request, sourcing the 1771-P4R through our platform means zero compromise on quality or lead time. Contact our technical team today for a competitive quote.

Typical Application Scenarios

Oil & Gas Upstream & Midstream: Pipeline SCADA and compressor station PLCs demand continuous uptime. The 1771-P4R’s hot-swap capability allows field technicians to replace a degraded supply during live operations without a controlled shutdown.

Power Plants & Utilities: Turbine control and grid-switching systems rely on stable 5V DC rails. N+1 redundancy ensures that a single power supply failure never cascades into a plant-wide trip event.

Pharmaceutical & Life Sciences: FDA-regulated batch manufacturing lines require validated, traceable Spare Parts. The 1771-P4R ships with factory calibration certificates to support 21 CFR Part 11 compliance documentation.

Automotive Assembly: High-throughput body-weld and paint-shop lines cannot tolerate micro-interruptions. Load-sharing between redundant supplies extends mean time between failures (MTBF) and reduces scheduled maintenance windows.

Water & Wastewater Treatment: Remote pump stations with limited maintenance access benefit from the 1771-P4R’s diagnostic LED array, enabling remote fault identification before dispatching a technician.

Core Features & Technical Advantages

1. ✅ N+1 Hot-Standby Redundancy — Automatic failover in <20 ms; zero operator intervention required during primary supply fault.
2. Precision 5V DC Regulation — ±1% output tolerance across full load range (0-16A continuous, 20A peak for 3 seconds), protecting sensitive I/O modules from voltage excursions.
3. ✅ Heavy-Duty AC Input Range — Auto-sensing 120/220V AC, 47-63 Hz; compatible with global power infrastructure without hardware modification.
4. ✅ Robust Diagnostic Interface — Tri-color LED status panel provides real-time visibility into active, standby, and fault states for proactive maintenance scheduling.
5. ✅ Wide Operating Temperature — Rated 0°C to 60°C (32°F to 140°F); suitable for both climate-controlled control rooms and harsh plant-floor enclosures.
6. Certified & Compliant — UL Listed, CE marked, RoHS compliant; meets IEC 61131-2 power supply requirements for programmable controllers.

Technical Specifications & Selection Guide

Selection Tip: If your application requires DC input power, consider the 1771-P5E or 1771-P10 variants. For standard (non-redundant) 5V AC supplies, the 1771-P4S is the appropriate alternative. The 1771-P4R is specifically designed for N+1 redundant configurations requiring two matched units per chassis.

Logistics & Professional Service

• ✅ 2-Day Express Shipping Available — DHL / FedEx priority freight to major industrial hubs worldwide; sea freight options for bulk orders.
• ✅ 1-Year Comprehensive Warranty — Covers manufacturing defects and component failures; RMA process initiated within 24 hours of fault confirmation.
• ✅ 72-Hour Burn-In Testing — Every unit is load-tested at 100% rated current before shipment; factory calibration certificate included.
• ✅ EOL Legacy System Support — Specialized inventory of discontinued Allen-Bradley PLC-5 Spare Parts; long-term supply agreements available for MRO programs.
• ✅ Full Traceability Documentation — Certificate of Conformance, country of origin declaration, and datasheet available upon request to support procurement compliance.

FAQ (Frequently Asked Questions)

Q1: What is the current price and minimum order quantity for the 1771-P4R?
A: Pricing for the 1771-P4R is competitive and varies based on order volume and delivery urgency. Single-unit orders are accepted. Contact sale@ninermas.com with your required quantity and target delivery date for a formal quotation within 4 business hours. Volume discounts are available for MRO blanket orders.

Q2: What is the lead time for the 1771-P4R?
A: In-stock units ship within 1-2 business days via express courier. For large-volume orders or special configurations, lead time is typically 5-10 business days. We maintain dedicated safety stock of Allen-Bradley PLC-5 Spare Parts to support emergency shutdown (ESD) and turnaround maintenance scenarios.

Q3: Can you provide a Datasheet or technical documentation for the 1771-P4R?
A: Yes. The official Allen-Bradley 1771-P4R product datasheet, installation instructions (publication 1771-IN009), and wiring diagrams are available upon request. Submit your inquiry to sale@ninermas.com and our technical team will respond within one business day.

Q4: Is this unit 100% Original and Brand New, or refurbished?
A: All units listed are 100% Original and Brand New, sourced through verified distribution channels. We do not sell refurbished, remanufactured, or counterfeit components. Each 1771-P4R ships in original Allen-Bradley factory packaging with intact tamper-evident seals.

Q5: Is the 1771-P4R compatible with both 1771-A1B and 1771-A4B chassis?
A: Yes. The 1771-P4R is compatible with the full range of Allen-Bradley 1771 I/O chassis variants. Redundant operation requires two 1771-P4R units installed in the designated power supply slots of the chassis, connected via the 1771-CP1 interconnect cable.

Q6: Can a Certificate of Origin be provided for customs clearance?
A: Absolutely. A Certificate of Origin (COO) indicating the United States as the country of manufacture is available for all 1771-P4R shipments. Additional customs documentation, including commercial invoices and packing lists, is prepared as standard for all international orders.

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