Honeywell FC-PSU-UNI4825U DC Power Supply Module

Honeywell FC-PSU-UNI4825U Universal Power Supply Unit

The Honeywell FC-PSU-UNI4825U is a UL508-approved switched-mode DC power supply engineered for industrial applications. It delivers stable 48 V DC at 25 A output with advanced protection features for Honeywell Safety Manager and Experion PKS systems.

Key Specifications

• Model: FC-PSU-UNI4825U
• Type: Universal Switched-Mode Power Supply
• Input Voltage: 110–240 V AC (operating limits: 93–253 V AC)
• Input Frequency: 47–63 Hz
• Output Voltage: 48 V DC
• Output Current: 25 A at -5°C to +50°C
• Output Power: 1200 W (current-limited)
• Efficiency: >85% at 220–240 V AC; >80% at 110–120 V AC
• Ripple & Noise: <75 mVpp
• Hold-Up Time: 100 ms typical at 100% load
• Power Factor: Close to 1
• Dimensions: 420.5 x 140 x 90 mm (W x H x D)
• Weight: 5.7 kg (including cable set)
• Operating Temperature: -5°C to +70°C
• Storage Temperature: -25°C to +85°C
• Approvals: CE, TUV, UL508, CSA

Advanced Features

• Dual Over-Voltage Protection: Complies with DIN V 19250 and VDE V 0801
• ON/OFF Switch: Facilitates online replacement with isolated AC/DC connectors
• DC Under-Voltage Alarm: Relay de-energizes when output drops below 44 V DC
• Output Diode: Supports parallel operation for redundancy
• Isolation: 3750 Vrms (input to output); 2500 Vrms (input to case); 1500 V DC (output to case)

FAQ

Q: What is the derating curve?
A: Starting at 50°C: 30 W/°C derating.

Q: Can it operate in parallel for redundancy?
A: Yes, output diode supports parallel operation.

Q: What connectors are used?
A: AC: IEC 60320 C20 inlet; DC: Phoenix PCV4/3-G-7.62 with locking screws.

Installation Guide

1. Mount in chassis with adequate ventilation clearance.
2. Connect AC input via IEC C20 inlet (16 A with retaining clip).
3. Wire DC output via Phoenix connector with locking screws.
4. Configure alarm contact for under-voltage monitoring.

Selection Tips

• Verify total 48 V DC load requirement does not exceed 25 A.
• For redundant systems, install two units with load sharing.
• Consider derating above 50°C ambient temperature.