The Honeywell PBA455971-002 functions as a high-capacity power supply assembly engineered specifically for the Experion Process Knowledge System (PKS). This assembly delivers regulated 24 VDC power to sustain mission-critical C300 controllers and Series 8 I/O hardware. By converting global AC input into a stabilized DC output, the PBA455971-002 eliminates the risk of system logic resets caused by voltage fluctuations. It provides the heavy-duty current required for large-scale automation architectures in the oil and gas, chemical processing, and power generation sectors, ensuring that the control layer remains operational during peak demand.
| Category | Specification Details |
| Model Number | PBA455971-002 |
| Product Type | Regulated Power Supply Assembly |
| Input Voltage | 100–240 VAC (Universal), 50/60 Hz |
| Output Voltage | 24 VDC Regulated |
| Output Current | Typically 20 A to 30 A (Load dependent) |
| Efficiency | >90% typical |
| Isolation | Galvanic isolation (Input to Output) |
| Protection | Over-voltage, Over-current, Short-circuit |
| Cooling | Convection or forced-air (Installation dependent) |
| Operating Temp | –25 °C to +70 °C |
| Dimensions | 300 × 150 × 80 mm |
| Weight | 3.0–3.5 kg |
| System Compatibility | Honeywell C300, Experion PKS, Series 8 I/O |
High-Ampacity Load Management: The assembly supports up to 30 A of output current, allowing a single unit to power multiple I/O racks and controllers. This density reduces the number of individual power components required in a cabinet, simplifying the overall DC distribution bus.
Global Voltage Versatility: The auto-ranging input stage accepts voltages from 100 to 240 VAC. This enables engineers to specify the PBA455971-002 for projects globally without the need for additional step-down transformers or regional variants.
Robust Fault Shielding: Integrated protection circuitry instantly suppresses electrical surges and transients. In the event of a short circuit or over-current condition, the module protects the downstream C300 controller’s sensitive logic, acting as an essential firebreak for the system's electronic assets.
Thermal Endurance: Optimized for high-temperature industrial environments, the module maintains efficiency up to +70 °C. The high-efficiency design (>90%) minimizes internal heat generation, which extends the lifespan of the electrolytic capacitors and improves total system MTBF (Mean Time Between Failures).
Does this assembly support redundant configurations?
Yes. The PBA455971-002 integrates seamlessly into Honeywell’s redundant power architectures. When paired with a second unit and appropriate diode auctioning, it ensures 24/7 system uptime even if a primary AC circuit fails.
Is the cooling fan included in this assembly?
The PBA455971-002 often relies on the rack's airflow or integrated cooling solutions. Please verify your specific enclosure airflow requirements to determine if supplemental forced-air cooling is necessary for high-load applications.
Is this product "Brand New"?
We guarantee that this PBA455971-002 is 100% Brand New and Original Honeywell equipment. We ship every unit in its original factory packing with a full 12-month technical warranty.
Can this module replace legacy Experion power units?
This assembly is optimized for modern Experion PKS Series 8 and C300 platforms. If you are retrofitting an older system, please verify the mounting footprint and terminal connections against your existing documentation.
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