Efficiency is 87% typical. Because 75A generates significant heat, the unit uses a built-in DC fan with thermostatic control (≥50°C ON, ≤40°C OFF) inside a 225 × 124 × 35 mm low-profile case. Protection covers short circuit, overload (105–150%, constant-current then shutdown after 3s, re-power to recover), over voltage (5.75–6.75V), and over temperature. It runs from -20°C to +70°C, passes 5G vibration, operates up to 5000m altitude, and carries a 3-year warranty—making it a proven heavy 5V industrial power platform.
375W / 5V 75A: Very high 5V current for LED displays, dense logic boards, automation panels, and embedded compute clusters.
Switch-Selectable Input: 90–132 / 180–264V AC and 255–370V DC; 300V AC surge for 5 seconds.
1U Low Profile + Smart Fan: 225×124×35mm, built-in DC fan turns on at ≥50°C and off at ≤40°C—keeps noise/power low at light load.
Industrial Protection Set: Short circuit, overload (constant-current limit → shutdown after 3s → re-power recover), over voltage 5.75–6.75V, over temperature shutdown.
Rugged & Certified: -20°C ~ +70°C, 5G vibration, 5000m altitude, <0.75W no-load loss, power-on LED, IEC/UL 62368-1& EN61558, 3-year warranty.
MODEL: LRS-450-5
BRAND: Mean Well
TYPE: Enclosed AC/DC Single-Output Switching Power Supply
|
Category |
Specification |
|---|---|
|
DC Output Voltage |
5V |
|
Rated Current |
75A |
|
Current Range |
0 – 75A |
|
Rated Power |
375W |
|
Voltage Adjust Range |
4.75 – 5.5V |
|
Ripple & Noise (max.) |
200mVp-p |
|
Voltage Tolerance |
±2.0% |
|
Line Regulation |
±0.5% |
|
Load Regulation |
±2.0% |
|
Setup / Rise Time |
1500ms / 50ms (full load) |
|
Hold-up Time (Typ.) |
16ms @230V AC, 12ms @115V AC |
|
Input Voltage Range |
90–132V AC / 180–264V AC (switch); 255–370V DC |
|
Input Frequency |
47–63Hz |
|
Efficiency (Typ.) |
87% |
|
AC Current (Typ.) |
10A @115V AC, 6A @230V AC |
|
Inrush Current (Typ.) |
35A @115V AC, 60A @230V AC |
|
Leakage Current |
<2mA @240V AC |
|
Overload Protection |
105–150% rated power; constant-current limit, shutdown after 3s, re-power to recover |
|
Over Voltage Protection |
5.75–6.75V; shut down output, re-power to recover |
|
Over Temperature Protection |
Shut down output, re-power to recover |
|
Short Circuit Protection |
Constant-current limiting within overload behavior |
|
Cooling |
Built-in DC fan, thermostatic (≥50°C ON, ≤40°C OFF) |
|
Operating Temp. |
-20°C ~ +70°C (refer to derating curve; 100% load up to ~45°C for 5V model) |
|
Operating Humidity |
20–90% RH, non-condensing |
|
Storage Temp. |
-40°C ~ +85°C |
|
Vibration |
10–500Hz, 5G |
|
Isolation |
I/P-O/P: 3kV AC; I/P-FG: 2kV AC; O/P-FG: 0.5kV AC |
|
Dimensions (L×W×H) |
225 × 124 × 35 mm |
|
Weight |
Approx. 0.85 kg |
|
Indicator |
Green LED for power-on |
|
No-load Power |
<0.75W |
|
Altitude |
2000m full load; up to 5000m derated |
|
Certifications |
BS IEC/UL 62368-1, EN61558-1/-2-16, CB, CE, EAC, UKCA, AS/NZS 62368.1, BSMI, KC, BIS (model-dependent) |
|
Warranty |
3 years |
