FC-PSU-UNI2450U, It provides an isolated, redundant, and diagnostic-capable 24 VDC operating power supply for the entire SIS safety control system.

Specifications:

Input: AC 100–277V, 47–63Hz

Output: Regulated 24VDC; rated 50A (1200W)

Power Factor > 0.9; Conversion Efficiency ≈ 92%

Cooling: Forced air cooling via built-in fan

Protection Mechanisms: Over-voltage (OVP), over-current (OCP), short-circuit protection, over-temperature shutdown

Mounting: Rack-mount

Operating Temperature: -20°C to +50°C; Humidity: 0–95% (non-condensing)

Certifications: UL, CSA, CE, TÜV; compliant with IEC 61508 safety system applications

Notes:

Continuous long-term fan operation results in wear; periodic fan inspection is recommended.

Leave ventilation space above and below the cabinet; do not install in a sealed, unventilated enclosure.

Redundant configurations must use power supplies of the same model and version to avoid load-sharing anomalies.

Designed exclusively for Honeywell FC series safety systems; do not directly substitute with third-party 24V industrial switching power supplies.

Classification of Honeywell Power Supply Modules

FC-PSU-UNIxx series high-power rack-mount power supplies (shared architecture; varying voltage/current specifications)

Example: FC-PSU-UNI4825U (48VDC / 25A) – for applications requiring a 48V DC load

FC series low-power rack-mount power supplies;

Example: FC-QPP-0002 – legacy FSC rack power supply used in early FSC systems; now being gradually replaced by the UNI series.

Legacy FSC traditional power supplies (phased out from older systems and replaced by new products)

Examples: 10105/1/1, 10105/2/1 – legacy FSC rack power supply modules