Bel Fuse / Power-One PFC375-4000 Performance Power Series Power Supply

The Bel Fuse/Power-One PFC375-4000 is a 375W AC-DC power supply from the Performance Power Series, designed for commercial and industrial applications requiring reliable and efficient power conversion. This unit features active Power Factor Correction (PFC) to meet EN61000-3-2 standards and provides fully regulated outputs. It is engineered to deliver full output power with 300 Linear Feet per Minute (LFM) of forced-air cooling, with an optional factory-installed fan available. Key functionalities include main output remote sense, power fail and DC power good signals, logic level inhibit, and current sharing for redundant configurations. The PFC375-4000 is approved to international regulatory standards and displays the CE Mark.

### Technical Specifications

**General**
* **Manufacturer:** Bel Fuse / Power-One
* **Model:** PFC375-4000
* **Product Family:** PFC375 Performance Power Series
* **Type:** AC-DC Converter, Switching Power Supply
* **Power Output:** 375 W (with 300 LFM forced air cooling)
* **Peak Output Power:** Up to 450 Watts for 60 seconds or less (10% duty cycle max.)
* **Certifications & Approvals:** CB, CE, CSA, Nemko, EN62368-1, IEC/EN62368-1, UL/CSA62368-1
* **RoHS Compliant:** Yes (Models with ‘G’ suffix are RoHS compliant; models without ‘G’ may not be)
* **Operating Temperature Range:** 0 °C to +70 °C
* **Storage & Transportation Temperature Range:** -55 °C to +85 °C
* **Relative Humidity Range:** 0% to 95% RH (Non-Condensing)
* **Altitude:** 2000 m
* **Mounting Type:** Chassis Mount
* **Enclosure:** Enclosed
* **Mounting Options:** SAE or optional Metric mountings

**Electrical Input**
* **Input Voltage Range (AC):** 85 ~ 264 VAC
* **Nominal Input Voltage:** 110 VAC
* **Input Frequency:** 47 Hz to 63 Hz
* **Input Current (at 85 VAC, full load):** 6 ARMS
* **Brown-Out Protection:** Maintains regulation at AC input voltage down to 85 VAC
* **Hold-Up Time:** 20 ms (over full AC input voltage range at full rated load)
* **Input Protection:** Non-user serviceable, internally located AC input line fuse, F10A, 250V
* **Input Transient & ESD Compliance:** EN61000-4-2/-3/-4/-5

**Electrical Output**
* **Output Configuration:** Quad Output (PFC375-4000 model specifically has 5V/12V/12V/5V outputs)
* **Output Voltages (PFC375-4000):**
* +5V (Fixed)
* +12V (Adjustable: 11.3V to 12.6V)
* 12V (Adjustable: 11.3V to 12.6V)
* 5V (Fixed)
* **Adjustment Range (where applicable):**
* +5V: 4.5V to 5.5V
* +12V: 11.3V to 12.6V
* 12V: 11.3V to 12.6V
* **Max Output Current (PFC375-4000):**
* +5V (main): 40A
* +12V: 16A
* 12V: 6A
* 5V: 3A
* **Peak Output Current (PFC375-4000):**
* +5V (main): 40A
* +12V: 16A
* 12V: 6A
* 5V: 3A
* **Line Regulation:**
* +5V: 0.4%
* +12V: 0.9%
* 12V: 0.9%
* 5V: 2%
* **Load Regulation:**
* +5V: 0.8%
* +12V: 0.9%
* 12V: 0.9%
* 5V: 2%
* **Ripple & Noise (% p-p, 20MHz bandwidth):**
* +5V: 1%
* +12V: 1%
* 12V: 1%
* 5V: 2.4%
* **Initial Setting Accuracy:**
* +5V: ±0.02V (4.98V to 5.02V)
* +12V: ±0.2V (11.9V to 12.1V)
* 12V: ±0.2V (11.9V to 12.1V)
* 5V: ±0.2V (4.9V to 5.1V)
* **Outputs V3 and V4:** Can be used as positive or negative outputs.
* **Series Connection (V3 & V4):** May be series connected to obtain 48V.
* **Parallel Connection:** Main channel current sharing provided for redundant applications.

**Protection Features**
* **Over-Temperature Protection:** System shutdown due to excessive internal temperature; automatic reset.
* **Over-Voltage Protection:** Built-in protection against overvoltage conditions.
* **Over-Current Protection:** Built-in protection against overcurrent conditions.

**Interfaces and Signals**
* **Remote Sense:** Main output remote sense capability for voltage compensation.
* **Power Fail Signal:** Logic signal indicating loss of input power.
* **DC Power Good Signal:** Logic signal indicating that outputs are within regulation.
* **Logic Level Inhibit:** TTL compatible logic signal to inhibit outputs (logic low). Normal operation with open circuit or logic high.
* **Fan Output Voltage:** Provides voltage for an optional fan.

**Physical**
* **Dimensions (L x W x H):**
* 228.6 x 127 x 63.5 mm (9 x 5 x 2.5 inches)
* 266.7 x 127 x 63.5 mm (10.5 x 5 x 2.5 inches) (for some configurations)
* **Weight:** Approximately 15 lbs (for some listings, actual may vary)
* **Cooling:** 300 LFM Forced Air required for full power. Optional internal fan.
* **Connector Type:** Screw Terminal

**Compatibility**
* **Intended for Installation:** Within other equipment by professional installers.
* **Grounding:** Must be properly grounded to the protective earth at the end-use application. Requires a minimum cross-section of 2.5 mm² (14 AWG) for grounding wires.

**Discontinued Status**
* The Bel Fuse/Power-One PFC375-4000 model has been discontinued by the manufacturer. However, it may still be available for purchase and support through third-party distributors or service providers.

Why Choose Aumictech for Bel Fuse / Power-One PFC375-4000?
At Aumictech, we specialize in sourcing and supporting high-performance power supply equipment. Whether you require a reliable replacement for your existing Bel Fuse/Power-One PFC375-4000, need expert technical consultation for integration, or seek specialized support for legacy systems, our team ensures your critical applications maintain optimal power performance.