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220 x 95 x 46mm | 85~264VAC / 120~370VDC Input | 5 Output Models 12V ~ 48VDC | 252W ~ 280.32W | 3-Pole IEC320-C14 AC Inlet | Class I with Protective Earth | Active PFC, PF>0.98 | Fanless Design | No-Load <0.5W | Efficiency Level VI, up to 94% | Leakage 1.5mA Max | C6P 6-Pin Standard Plug | -30~+70C | 3-Year Warranty
The MEAN WELL GST280A series is a high-reliability 280W-class AC-DC desktop single-output green adapter built into a fully enclosed, fanless plastic housing. It connects to mains through a 3-pole IEC320-C14 inlet and is a Class I power supply with protective earth. Input range is 85~264VAC or 120~370VDC, and the series covers five output voltages from 12V to 48VDC - 12V, 15V, 20V, 24V and 48V, with no 36V model - serving consumer electronic devices, telecom equipment, office equipment and industrial equipment.
The input stage uses active power factor correction, with power factor above 0.95 at 230VAC and above 0.98 at 115VAC at full load, drawing 3A at 115VAC and 1.5A at 230VAC. Maximum leakage current is 1.5mA at 240VAC. Withstand voltage is 3KVAC input-to-output and 2KVAC input-to-FG, with the output-to-FG path effectively shorted; insulation resistance is 100M Ohms minimum at 500VDC. Because there is no fan, there is no airflow path to filter and no bearing to wear out - the 94V-0 flame-retardant enclosure is fully sealed. This is an ITE product: for patient-contact medical equipment choose a 60601-1 certified adapter from the GSM series instead.
Typical efficiency runs from 89.5% on the 12V model to 94% on the 48V model, meeting Efficiency Level VI and complying with USA EISA 2007/DoE, Canada NRCan, AU/NZ MEPS, Korea K-MEPS and EU ErP. No-load consumption is published as below 0.5W - higher than the 0.15W quoted for the smaller GST platforms, because the DoE Level VI no-load ceiling for adapters above 250W output is 0.5W rather than 0.21W. Rated power is not a flat 280W either: 12V is 252W, 15V is 255W, 20V is 260W, and the 24V and 48V models reach 280.08W and 280.32W. Always quote the model's own figure.
The standard output connector on all five models is the C6P, a 6-pin MOLEX 39-01-2060 equivalent with pins 1-2-3 as +Vo and pins 4-5-6 as -Vo. On the C6P the negative output is connected to AC FG, so the output is referenced to protective earth rather than floating. DIN 4-pin with lock (R7BF), XLR 4-pin (MIC4) and AMP 4-pin (C4P) connectors can be fitted at the factory. Protections cover short circuit, overload (105%~135% of rated power, hiccup mode with auto-recovery), over voltage (105%~135% of rated output voltage, output shutdown with restart to recover) and over temperature (output shutdown with restart to recover). The 220 x 95 x 46mm adapter weighs 1.25Kg, operates from -30C to +70C and is backed by a 3-year warranty.
Output ratings for all five GST280A models. All values measured at 230VAC input, rated load, 25C / 70%RH unless otherwise noted.
| Model | Output Voltage | Rated Current | Current Range | Rated Power (Max) | Efficiency (Typ.) |
|---|---|---|---|---|---|
| GST280A12-C6P | 12V | 21A | 0 ~ 21A | 252W | 89.5% |
| GST280A15-C6P | 15V | 17A | 0 ~ 17A | 255W | 90% |
| GST280A20-C6P | 20V | 13A | 0 ~ 13A | 260W | 92% |
| GST280A24-C6P | 24V | 11.67A | 0 ~ 11.67A | 280.08W | 93% |
| GST280A48-C6P | 48V | 5.84A | 0 ~ 5.84A | 280.32W | 94% |
Rated power is not a flat 280W: 12V is 252W, 15V is 255W, 20V is 260W, 24V is 280.08W and 48V is 280.32W, exactly as the datasheet publishes. The series covers five voltages only - there is no 36V model in GST280A. Efficiency rises with voltage on this platform, from 89.5% at 12V to 94% at 48V, and the 24V and 48V models carry tighter output tolerance at ±3.0% and ±2.0%.
| Model | Ripple & Noise (Max) | Voltage Tolerance | Line Regulation | Load Regulation |
|---|---|---|---|---|
| GST280A12-C6P | 120mVp-p | ±5.0% | ±1.0% | ±5.0% |
| GST280A15-C6P | 120mVp-p | ±5.0% | ±1.0% | ±5.0% |
| GST280A20-C6P | 150mVp-p | ±4.0% | ±1.0% | ±4.0% |
| GST280A24-C6P | 200mVp-p | ±3.0% | ±1.0% | ±3.0% |
| GST280A48-C6P | 200mVp-p | ±2.0% | ±1.0% | ±2.0% |
Overload protection is specified once for the whole series at 105%~135% of rated output power in hiccup mode with automatic recovery. Over-voltage protection also trips at 105%~135% of rated output voltage, but the response is output shutdown with a manual restart, not hiccup. Over-temperature protection behaves the same way: the output shuts down and the unit must be restarted once it has cooled. All three are listed in the Input & Protection table below.
| Style | Type | Model | Pin Definition |
|---|---|---|---|
| Standard (all models) | 6-pin, MOLEX 39-01-2060 or equivalent, -V bonded to AC FG | C6P | Pins 1, 2, 3 +Vo | Pins 4, 5, 6 -Vo |
| Min. DIN 4 Pin with Lock (female) | KYCON KPJX-CM-4S equivalent | R7BF | Pin 1 +Vo | Pins 2, 3 -Vo | Pin 4 +Vo |
| XLR 4 Pin | NEUTRIK NC4FX equivalent | MIC4 | Pins 1, 2 +Vo | Pins 3, 4 -Vo |
| 4 Pin | AMP 1-480702-0 (6.35mm) equivalent | C4P | Pins 1, 2 +Vo | Pins 3, 4 -Vo |
Note: the datasheet publishes exactly three optional plugs for the GST280A - R7BF, MIC4 and C4P - all factory-fitted and subject to a minimum order quantity. There is no tuning-fork plug and no quick-change adapter on this platform, unlike the smaller GST160A and GST220A series. On the standard C6P connector the negative output is connected to AC FG; the manufacturer does not publish the grounding arrangement for the optional R7BF, MIC4 or C4P connectors, so confirm your grounding scheme with us before ordering.
| AC Input Range | 85~264VAC | 47~63Hz |
| DC Input Range | 120~370VDC |
| AC Inlet | 3-pole IEC320-C14 inlet | Class I construction with protective earth |
| Power Factor (Typ.) | PF>0.95 / 230VAC | PF>0.98 / 115VAC at full load | Active PFC |
| AC Current (Typ.) | 3A / 115VAC | 1.5A / 230VAC |
| Inrush Current (Max.) | Cold start 95A / 115VAC | 120A / 230VAC |
| Leakage Current (Max.) | 1.5mA / 240VAC |
| Efficiency (Typ.) | 89.5% / 90% / 92% / 93% / 94% on 12V / 15V / 20V / 24V / 48V | Efficiency Level VI for the whole series | Complies with USA EISA 2007/DoE, Canada NRCan, AU/NZ MEPS, Korea K-MEPS and EU ErP |
| No-Load Power Consumption | <0.5W |
| Set Up / Rise Time | 2000ms, 20ms / 230VAC | 2000ms, 20ms / 115VAC at full load |
| Hold Up Time (Typ.) | 16ms / 230VAC | 16ms / 115VAC at full load |
| Overload Protection | 105%~135% of rated output power | Hiccup mode, auto-recovery after the fault condition is removed |
| Over-Voltage Protection | 105%~135% of rated output voltage | Output shutdown, restart to recover |
| Over-Temperature Protection | Output shutdown, restart to recover |
| Operating Temp / Humidity | -30~+70C, fanless design (refer to derating curve) | 20~90% RH non-condensing |
| Storage Temp / Humidity | -40~+85C | 10~95% RH non-condensing |
| Temp Coefficient | ±0.03%/C (0~40C) |
| Vibration | 10~500Hz, 2G, 10min/cycle, 60min each along X, Y, Z axis |
| DC Output Cable | UL2464 16AWG x 4C 1000±50mm on every model |
| Output Reference (-V / FG) | Standard C6P plug: -V is connected to AC FG, so the output is referenced to protective earth | Optional R7BF / MIC4 / C4P: grounding scheme not published by the manufacturer |
| MTBF | 1625.8K hrs min. Telcordia SR-332 (Bellcore) | 181.2K hrs min. MIL-HDBK-217F (25C) |
| Dimensions / Packing | 220 x 95 x 46mm (L*W*H) | 1.25Kg; 12pcs / 16Kg / 1.09CUFT per carton |
| Enclosure Model / Indicator | Enclosure model GS280A | Power-on LED indicator on the housing |
| ITE Safety Standards | UL62368-1; CSA C22.2 No.62368-1; TUV BS EN/EN62368-1; BSMI CNS15598-1; CCC GB4943.1; PSE J62368-1; AS/NZS 62368.1; BIS IS13252; KC K60950-1; EAC TP TC 004 |
| Protection Class | Class I (protective earth bonded through the 3-pole IEC320-C14 inlet) |
| Withstand Voltage | I/P-O/P: 3KVAC | I/P-FG: 2KVAC | O/P-FG: SHORT |
| Insulation Resistance | I/P-O/P: 100M Ohms / 500VDC / 25C / 70% RH |
| EMC Emission | Conducted emission: BS EN/EN55032 (CISPR32), FCC Part 15 / CISPR22, CAN ICES-3(B)/NMB-3(B), CNS15936, GB17625.1, EAC TP TC 020, MSIP KN32 - Class B | Radiated emission: same standards, Class B | Harmonic current: BS EN/EN61000-3-2 | Voltage flicker: BS EN/EN61000-3-3 |
| EMC Immunity | ESD BS EN/EN61000-4-2 Level 4 (15KV air) / Level 4 (8KV contact) | RF field BS EN/EN61000-4-3 Level 2, 3V/m | EFT bursts BS EN/EN61000-4-4 Level 2, 1KV | Surge BS EN/EN61000-4-5 Level 3, 1KV line-line / 2KV line-FG | Conducted susceptibility BS EN/EN61000-4-6 Level 2, 3V | Magnetic field BS EN/EN61000-4-8 Level 2, 3A/m | Voltage dips and interruption BS EN/EN61000-4-11 |
| Housing / Protections | 94V-0 flame-retardant fully enclosed plastic housing, fanless | Protections: short circuit / overload / over voltage / over temperature |
| Warranty | 3 years |
All five models carry the same approval list - there is no "except for 36V" marker on this datasheet, because there is no 36V model. Note that the GST280A list includes CSA C22.2 No.62368-1 and does not itemise IEC62368-1 separately, unlike the earlier GST220A sheet.
All five models are certified to UL62368-1, CSA C22.2 No.62368-1, TUV BS EN/EN62368-1, BSMI CNS15598-1, CCC GB4943.1, PSE J62368-1, AS/NZS 62368.1, BIS IS13252, KC K60950-1 and EAC TP TC 004. Unlike the GST220A series there is no per-model exception, because GST280A has no 36V model. Conducted and radiated emissions meet Class B limits to BS EN/EN55032 (CISPR32), FCC Part 15 / CISPR22, CAN ICES-3(B)/NMB-3(B), CNS15936, GB17625.1, EAC TP TC 020 and MSIP KN32.
Earth-referenced, on the standard C6P build. The datasheet pin definition states that the negative output (-V) is connected to AC FG, so the output sits on protective earth through the mains inlet - this is not an isolated floating output. If your end device expects a floating output, or the load side already has its own earth reference, tell us before ordering: the manufacturer does not publish the grounding arrangement for the optional R7BF, MIC4 and C4P connectors, so we will confirm it with the factory for your build.
No. The datasheet rates them individually: 12V is 252W (21A), 15V is 255W (17A), 20V is 260W (13A), 24V is 280.08W (11.67A) and 48V is 280.32W (5.84A). Only the 24V and 48V models actually reach the 280W nominal. Quoting "280W" on a 12V requirement overstates it by 28W, and on a 20V requirement by 20W.
No. The GST280A series covers 12V, 15V, 20V, 24V and 48V only. If you need 36VDC at this power level, the GST220A36-R7B (36V / 6.1A / 219.6W) and the GST160A36-R7B (36V / 4.44A / 160W) are the two MEAN WELL desktop options - both are 36V but at lower rated power, so check your current demand before substituting.
Because of the power band, not because of a weaker design. Efficiency Level VI sets a no-load ceiling of 0.21W for adapters between 49W and 250W output, and 0.5W above 250W - so a 280W platform is measured against the 0.5W limit. The GST280A publishes "below 0.5W" and meets Level VI. Comparing its no-load figure with a 120W adapter's 0.15W is comparing two different regulatory bands.
Both shut the output down and require a restart - they do not self-recover. Over-voltage protection trips at 105%~135% of rated output voltage; over-temperature protection trips when the internal temperature exceeds its limit. Only overload protection (105%~135% of rated power) is hiccup mode with automatic recovery once the fault is removed. If your installation is unattended, plan for a remote power cycle or size the thermal design with margin so the OTP point is never reached.
No. The datasheet publishes exactly three optional connectors - R7BF (DIN 4-pin with lock), MIC4 (XLR 4-pin) and C4P (AMP 4-pin) - and all of them are factory-fitted with a minimum order quantity. There is no tuning-fork 5.5mm plug and no quick-change adapter on this platform; that option exists on the smaller GST160A and GST220A series, where it is also limited to 7.5A.
GST280A is a Class I power supply. It connects through a 3-pole IEC320-C14 inlet and bonds the protective earth, so the mains side carries a protective earth conductor, and it uses a 94V-0 flame-retardant fully enclosed plastic housing. It is not a double-insulated Class II product and must be run from an earthed mains supply.
No. GST280A is an ITE product certified to the 62368-1 safety standard. For equipment with patient contact, use a 60601-1 certified adapter from the MEAN WELL GSM medical series instead, which provides 2xMOPP isolation. The adapter is in any case a component intended to be built into end equipment, so EMC and safety of the complete system must be confirmed with the finished device.
Explore every output voltage in the GST280A family.
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