The Bel Fuse/Power-One PFC375-4000 is a 375 W AC-DC switching power supply from the Performance Power Series, engineered for commercial and industrial applications demanding reliable power conversion across wide input voltage ranges. This quad-output unit delivers +5V, +12V, +12V, and +5V rails with active Power Factor Correction (PFC) compliant to EN61000-3-2. Peak output reaches 450 W for up to 60 seconds at 10% duty cycle maximum. The supply operates with 300 Linear Feet per Minute (LFM) forced-air cooling and maintains full regulation across 85–264 VAC input with 20 ms hold-up time at full load.
## Technical Specifications
**Input Characteristics**
• Input voltage range: 85–264 VAC
• Input frequency: 47–63 Hz
• Input current at 85 VAC (full load): 6 ARMS
• Fuse protection: F10A, 250V (non-user serviceable, internal)
• Brown-out regulation: Down to 85 VAC
• Hold-up time: 20 ms (full AC range, rated load)
**Output Configuration**
• +5V main: 40A max, 4.5–5.5V adjustable, 0.4% line regulation, 0.8% load regulation
• +12V: 16A max, 11.3–12.6V adjustable, 0.9% line regulation, 0.9% load regulation
• 12V: 6A max, 11.3–12.6V adjustable, 0.9% line regulation, 0.9% load regulation
• 5V: 3A max, 4.5–5.5V adjustable, 2% line regulation
**Environmental & Thermal**
• Operating temperature: 0–70 °C
• Storage/transportation: −55–85 °C
• Humidity: 0–95% RH (non-condensing)
• Altitude: 2000 m maximum
## Key Features
• Active Power Factor Correction (PFC) for EN61000-3-2 compliance
• Main output remote sense, power fail, and DC power good signaling
• Logic-level inhibit control and current sharing for redundant configurations
• Quad regulated outputs with independent adjustment capabilities
• International certifications: CB, CE, CSA, Nemko, EN62368-1, IEC/EN62368-1, UL/CSA62368-1
• RoHS compliant (G-suffix models)
• Transient and ESD protection to EN61000-4-2, −3, −4, −5
## Typical Applications
Commercial and industrial embedded systems, distributed power architectures, and mission-critical equipment requiring multi-rail DC power with high availability and input voltage tolerance.
## Compatibility & Integration
Chassis-mount configuration with SAE or optional metric mounting. Optional factory-installed cooling fan available. Remote sense and control signal interfaces support integration into redundant and load-sharing systems.
