中文版
Phone: 
Email: 
WhatsApp: Description
- Model: FC-PSU-UNI2450U
- Brand: Honeywell
- Series: Safety Manager (SM)
- Core Function: Supplies regulated DC power to Safety Manager hardware
- Type: System Power Supply Unit (PSU)
- Key Specs: 110–240 VAC input, 25/28 VDC output, 48 A at 25 VDC
Product Introduction
A 110–240 VAC input range and 48 A output at 25 VDC define the Honeywell FC-PSU-UNI2450U as a high-capacity System Power Supply (PSU) for Honeywell Safety Manager installations. The documented V1.0 hardware accepts 93–253 VAC operating limits and provides selectable 25 VDC or 28 VDC output with dual overvoltage protection.
This is system power hardware, not an ordinary DIN-rail supply. At 25 VDC it can deliver 48 A, while the rated output at 28 VDC is 43 A, with a 100 ms hold-up time at full load. Honeywell’s own 2025 system notice identifies the UNI2450U as the Version 2.1 replacement for the older FC-PSU-UNI2450 V1.0, so the exact revision should be verified before a like-for-like replacement is ordered.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Model | FC-PSU-UNI2450U |
| Manufacturer | Honeywell |
| Product Family | Safety Manager |
| Product Type | System Power Supply Unit |
| Input Voltage | 110–240 VAC |
| Operating Input Limits | 93–253 VAC |
| Input Frequency | 47–63 Hz |
| Output Voltage | 25 VDC or 28 VDC |
| Output Current | 48 A at 25 VDC; 43 A at 28 VDC |
| Output Ripple and Noise | <40 mVpp |
| Hold-up Time | 100 ms at full load |
| No-load Power Consumption | 13 W |
| Efficiency at 230 VAC | >87% |
| Operating Temperature | -5°C to +70°C |
| Storage Temperature | -25°C to +85°C |
| Dimensions | 420.5 × 140 × 90 mm (W × H × D) |
| Weight | Approx. 5.7 kg including cable set |
| Approvals | CE, TÜV, UL, CSA, CID |
The specifications above come from Honeywell Safety Manager hardware documentation for the V1.0 configuration. The output is temperature-dependent, with derating beginning at 50°C.
HONEYWELL FC-PSU-UNI2450U
Application and Selection Notes
This PSU is intended for Honeywell Safety Manager systems where dependable DC power is part of the safety architecture. Its current capacity is substantial, so it should be evaluated against the complete system load rather than selected solely by nominal voltage.
There is an important lifecycle point here. Honeywell states that Version 2.1 incorporates design and manufacturing changes to improve resistance to dust accumulation around the high-voltage circuit. The newer FC-PSU-UNI2450U is identified as the Version 2.1 replacement for the older FC-PSU-UNI2450 V1.0.
Do not confuse the exact suffix with unrelated Honeywell supplies. The FC-PSU-UNI2450U belongs to the Safety Manager power-supply family and should be matched against the installed system documentation.
Advantages and Limitations
Advantages
- 110–240 VAC nominal input range
- Up to 48 A output at 25 VDC
- 43 A available at 28 VDC
- 25/28 VDC selectable output
- 100 ms hold-up time at full load
- Dual overvoltage protection
- CE, TÜV, UL and CSA approvals documented for the referenced configuration
- Intended specifically for Honeywell Safety Manager systems
Limitations
This is not a generic replacement for every 24 VDC, 48 A industrial power supply. Mechanical dimensions, output characteristics, system wiring, and safety certification all matter.
The V1.0 configuration also has published thermal derating above 50°C. A cabinet running hot should therefore be checked before assuming the full current rating is continuously available.
Global Procurement and Shipping Notes
| Item | Recommended Handling |
|---|---|
| Condition | Confirm New Original, New Surplus, or Refurbished |
| Revision | Specify V1.0, V2.0, or V2.1 when applicable |
| Stock Status | Verify physical inventory before PO |
| Lead Time | Confirm actual warehouse availability |
| Warranty | State clearly on quotation and PI |
| Packaging | ESD protection plus rigid shock-resistant carton |
| Export Documents | Commercial Invoice, Packing List, COO when required |
| Shipping Method | Air courier for urgent MRO requirements |
| Incoterms | FCA, EXW, FOB, or DAP |
| Customs Description | Honeywell Safety Manager system power supply |
For international shipments, show the complete part number and revision on the Commercial Invoice and Packing List. Do not describe it simply as a “24 V power supply” when the actual item is a Honeywell Safety Manager system PSU.
Quality Inspection and Test SOP
1. Inbound inspection
Verify source documentation, serial number, nameplate, revision, connector/cable set, and physical condition. Inspect for corrosion, impact damage, yellowing, loose hardware, or evidence of repair.
2. Live test
Use a compatible Honeywell Safety Manager test environment or approved PSU load bank. Check startup behavior, output voltage, alarm/diagnostic indicators, and load response. Where the test setup permits, verify output stability under representative load and document the result in a Test Report.
3. Electrical testing
Check grounding continuity and applicable insulation requirements. A high-voltage insulation test should only be performed according to the manufacturer’s approved procedure; do not apply an arbitrary 500 V megohmmeter test directly across sensitive circuitry.
4. Configuration verification
Record hardware revision and output setting. Check the original system’s PSU configuration before replacement. Photograph connectors and wiring where practical.
5. Final QC
Seal the unit in suitable protective packaging, secure the cable set, use shock-resistant outer packaging, and attach a QC Passed label with inspection date. Test photographs or video can be supplied when the corresponding test has actually been completed.
Common Replacement Risks
Revision mismatch: Honeywell documents a clear upgrade path from FC-PSU-UNI2450 V1.0 to FC-PSU-UNI2450U V2.1. Older hardware combinations may require additional components, so the complete system revision needs checking.
Output-voltage mistake: The documented PSU provides 25 VDC or 28 VDC. Do not assume every Safety Manager supply is configured identically.
Thermal derating: Full current capability is not independent of ambient temperature. The documented output derating starts at 50°C.
Cable-set mismatch: The documented weight includes the cable set. Check whether the replacement is being supplied complete or as the PSU alone.
ESD and electrical safety: Disconnect the AC source and follow the site’s electrical isolation procedure before replacement. This is a high-energy power assembly, not a small signal module.
One practical rule: photograph the PSU label and every cable connection before removal. It takes less than a minute.
Related Models
FC-PSU-UNI2450 V1.0: Earlier Honeywell Safety Manager PSU with 115/230 VAC input and 24 VDC nominal output, rated at 50 A in the older catalog configuration. Honeywell identifies the FC-PSU-UNI2450U V2.1 as its replacement.
FC-PSU-UNI2450 V2.0: Earlier revision of the UNI2450 family; Honeywell’s upgrade notice states that no replacement is specified for this revision in the referenced table.
FC-PSU-UNI4825U: Related Safety Manager power supply for 48 VDC output systems.
FC-PSU-UNI6020U: Related Safety Manager power supply configured for 60 VDC output.
Quick Conclusion
- Honeywell Safety Manager system power supply.
- 110–240 VAC nominal input, with 93–253 VAC operating limits.
- 25/28 VDC output configuration.
- 48 A at 25 VDC or 43 A at 28 VDC.
- 100 ms hold-up time at full load.
- Published approvals include CE, TÜV, UL and CSA for the referenced V1.0 configuration.
- Revision must be confirmed: Honeywell identifies the UNI2450U V2.1 as a replacement for the older UNI2450 V1.0.
FAQ
What is the HONEYWELL FC-PSU-UNI2450U?
It is a Honeywell Safety Manager System Power Supply Unit designed to provide high-current DC power to the safety-system hardware.
What is its input voltage?
The documented V1.0 configuration accepts 110–240 VAC, with operating limits of 93–253 VAC.
How much current can it supply?
At 25 VDC, the published output rating is 48 A. At 28 VDC, the rating is 43 A.
Is the FC-PSU-UNI2450U a 24 VDC power supply?
It is commonly described as a 24 VDC-class Safety Manager supply, but the documented output setting is 25 VDC or 28 VDC. The exact setting should be checked against the system requirement.
Can it replace the older FC-PSU-UNI2450?
Honeywell specifically identifies the FC-PSU-UNI2450U V2.1 as the replacement for FC-PSU-UNI2450 V1.0. Older system revisions may require additional components, so direct replacement should be confirmed before ordering.
What should be checked before purchase?
Confirm the complete part number, hardware revision, output voltage, cable set, mounting arrangement, system compatibility, physical stock, and warranty terms before issuing the purchase order.
