MEAN WELL GS05U-USB is a GS05U single-output AC/DC wall-plug power adapter rated at 5 VDC, 1.00 A and 5 W. Its Class II construction uses an integral two-pin US mains plug without protective earth. The output is a USB Type-A socket. Apply the stated output-current, power and ambient-temperature limits together.
Product Datasheet
Download MEAN WELL GS05U Datasheet (PDF)
The GS05U section is on PDF pages 1, 2. Refer to the complete mechanical drawings and notes when planning installation.
Model and Configuration
| Complete order number |
GS05U-USB. |
| Safety model identifier |
GUSB05. |
| Product category |
Single-Output AC/DC USB Power Adapter. |
| AC plug / electrical class |
Two-pin US plug; Class II, no protective-earth pin. |
| No-load power |
<0.075 W. |
| Energy efficiency |
Level VI; USA Energy Independence and Security Act of 2007 (EISA 2007). |
| Limited-power classification |
LPS (Limited Power Source), as listed in the catalogue. |
| Case |
Fully enclosed plastic case. |
Compact wall-plug design with a USB Type-A power output.
Model-Specific DC Output
| Nominal output |
5 VDC. |
| Rated output current |
1.00 A. |
| Current range |
0–1.00 A. |
| Catalogue-rated output power, maximum |
5 W. |
| Ripple and noise, maximum |
90 mVp-p. |
| Voltage tolerance |
±5.0%. |
| Line regulation |
±1.0%. |
| Load regulation |
±5.0%. |
| Efficiency, typical |
74% at 115 VAC. |
Observe the current and power limits together. The voltage set point is measured at the output connector terminals at 50% load.
Input and Timing
| AC input |
90–264 VAC; 47–63 Hz. |
| DC input |
127–370 VDC. |
| AC input current |
0.2 A at 100 VAC. |
| Inrush current, maximum |
35 A at 230 VAC. |
| Leakage current, maximum |
0.25 mA at 240 VAC. |
| Set-up / rise / hold-up at full load |
1500 / 20 / 5 ms; standard measurement input 115 VAC. |
Protection
| Short circuit / overload |
105–135% of rated output power; hiccup operation, automatically recovering when the abnormal load is removed. |
| Overvoltage |
105–160% of rated output voltage, detected through the main control IC; hiccup operation, automatically recovering after the fault is removed. |
| Overtemperature |
Triggered when the internal U1 junction exceeds 135°C; output shutdown with automatic recovery after the temperature falls. |
Cooling and Environmental Limits
| Working ambient |
−20 to +50°C; apply derating. |
| Temperature/load curve |
100% load from −20°C to 40°C, decreasing to 60% at 50°C. |
| Input/load curve |
100% load across the specified 90–264 VAC range, subject to the temperature limits. |
| Working humidity |
20–90% RH, non-condensing. |
| Storage |
−20 to +85°C; 10–95% RH. |
| Temperature coefficient |
±0.03%/°C over 0–40°C. |
| Vibration |
10–500 Hz, 2 G; 10 minutes per cycle, 60 minutes along each X, Y and Z axis. |
The maximum ambient temperature does not imply full rated load. Keep the unit within both its electrical and temperature limits.
Safety and Isolation
| Catalogue-listed safety standards |
The specification table lists UL60950-1 and CSA22.2 approvals. |
| Input/output withstand |
4242 VDC. |
| Insulation resistance |
Input/output: 100 MΩ at 500 VDC, 25°C and 70% RH. |
Evaluate the finished equipment for its applicable safety and EMC requirements with the adapter connected in the intended configuration.
EMC
| Emission standards |
FCC Part 15 Class B. |
Dimensions and Connections
| Dimensions, catalogue L × W × H |
41.86 × 32.76 × 23.8 mm. |
| Output connector |
USB Type-A socket. |
| USB orientation |
Follow the connector-face drawing: contact 4 is +V and contact 1 is −V. |
| Mains-plug clearance |
The US blades protrude 17 mm beyond the body. |
This configuration uses a USB output socket. Select a compatible cable for the connected equipment; the catalogue section gives no separately orderable USB cable or DC-plug accessory code.
Reliability and Packing
| Minimum MTBF |
≥1100 thousand hours, MIL-HDBK-217F at 25°C. |
| Catalogue single-unit weight |
49 g; explicit per-unit catalogue packing reference, not a measured shipping-package weight. |
| Carton packing |
102 pieces / 5 kg / carton. |
| Manufacturer warranty |
2 years, as stated in this catalogue. |
Measurement Conditions and Datasheet
| General measurement conditions |
Unless otherwise specified: 115 VAC, rated load, 25°C and 70% RH. |
| Ripple/noise method |
20 MHz bandwidth; a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors. |
| Voltage-tolerance scope |
Includes set-point error, line regulation and load regulation. |
| Regulation measurements |
Line regulation: low to high input at rated load. Load regulation: 0–100% rated load. |
| Catalogue revision |
2022-04-15; combined PDF pages 1–2. |