PU515A 3BSE032401R1

Product Name

• “PU” = Product function identifier, representing “Power Supply Unit” (specialized in providing stable DC power for AC 800M system components, differentiated from CPU modules “PM” or I/O modules “AI/AO”).
• “515A” = Model sequence code: “515” denotes the medium-power redundant power supply family (supporting dual-module redundancy); “A” indicates the standard voltage version (24V DC output, differentiated from “B” versions for 12V DC).

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• “3BSE032401R1” = ABB’s standard part number & revision code: “3BSE” is the prefix for industrial control modules; “032401” is the base part number for PU515A models; “R1” stands for Revision 1 (optimized for load regulation and thermal stability).
• Core positioning: Serves as the “power distribution core” for ABB AC 800M distributed control systems (DCS), providing reliable 24V DC power for CPU modules (e.g., PM866-2), I/O modules, and communication modules in industries like chemical, oil & gas, and power generation.)

2. Product Description

1. Dual-Module Redundant Power Supply DesignSupports 1+1 redundant configuration (two PU515A modules working in parallel), enabling automatic load sharing (each module bears 50% of the total load under normal conditions). When one module fails (e.g., input voltage anomaly, internal component fault), the other module immediately takes over 100% of the load with a switchover time of ≤5ms—ensuring no power interruption to AC 800M system components (e.g., CPU, I/O modules) and avoiding control system downtime caused by power failure.
2. Wide Input Voltage Range & Stable OutputFeatures a wide AC input voltage range of 85-264V AC (50/60Hz), adapting to unstable power grids in industrial sites (e.g., voltage fluctuations caused by heavy machinery startup). It provides a stable 24V DC output with a rated current of 5A (total output power of 120W), and load regulation of ±1% (output voltage variation ≤±0.24V even when load changes from 10% to 100%). This stability ensures consistent performance of sensitive components like PLC CPUs and analog I/O modules.
3. Comprehensive Protection MechanismsIntegrates multi-level protection functions to prevent module damage and power supply anomalies:
   • Overcurrent Protection (OCP): Triggers when output current exceeds 6A (120% of rated current), cutting off output temporarily to avoid overload damage.
   • Overvoltage Protection (OVP): Activates when output voltage exceeds 28V DC, suppressing voltage spikes caused by load sudden disconnection.
   • Over-temperature Protection (OTP): Shuts down the module if internal temperature exceeds 85℃ (e.g., due to poor ventilation), and automatically restarts when temperature drops to 65℃.
   • Short-Circuit Protection (SCP): Withstands short-circuit faults at the output terminal (current limiting to ≤8A) without permanent damage, ensuring system safety during wiring errors.
4. Industrial-Grade Durability & System CompatibilityAdopts an industrial-grade enclosure (UL94 V-0 flame-retardant material) with an IP20 protection rating, suitable for cabinet-mounted installation in harsh industrial environments. It operates reliably in a temperature range of -10℃~+60℃ and tolerates 5%~95% non-condensing humidity, resisting dust, moisture, and electromagnetic interference (EMI) from nearby inverters or motors (compliant with EN 61000-6-2). The module is fully compatible with ABB AC 800M standard racks (e.g., PM860 rack), and its compact design (1U height) saves cabinet space—facilitating integration with other AC 800M components.