MEAN WELL GP50A58F-R1B is a Class I desktop AC/DC adapter with three outputs: +16 V / +48 V / −16 V DC. It supplies 71.2 W combined at the rated channel currents, subject to minimum loads and derating. The standard R1B five-pin DIN connector and IEC320-C14 input suit industrial, telecommunications and electronic equipment. Confirm the manufacturer-specific output pin assignment for this optional voltage set before wiring.
Product Datasheet
Download MEAN WELL GP50A Datasheet (PDF)
The GP50A section is on PDF pages 9, 10, 11, 12. Refer to the complete mechanical drawings and notes when planning installation.
Model and Combined Output
Complete model
GP50A58F-R1B.
Product type
Triple-output desktop AC/DC industrial adapter; Class I with protective earth.
Output set
+16 V / +48 V / −16 V DC, referenced to COM.
Combined rated output power
71.2 W across all three outputs; subject to input and temperature derating.
Efficiency, typical
86%.
Configuration
Optional ±16 V / +48 V video-system version, ordered as GP50A58F-R1B.
Model code
GP identifies the series; 50 is the nominal series wattage class; A identifies the IEC320-C14 three-pin AC format; 58F identifies the output-voltage set; R1B identifies the standard power DIN 5-pin connector.
These three channels form one complete adapter. Keep every channel within its minimum and maximum current and keep the combined output within 71.2 W. The per-channel current limits are not independent extra-power allowances.
CH1 Output
Nominal voltage
+16 VDC relative to COM.
Rated set current
2 A.
Operating current range
0.4–2 A.
Minimum load
0.4 A.
Ripple and noise, maximum
180 mVp-p.
Voltage tolerance
±5.0%.
Line regulation
±1.0%.
Load regulation
±5.0%.
CH2 Output
Nominal voltage
+48 VDC relative to COM.
Rated set current
0.15 A.
Operating current range
0.03–0.15 A.
Minimum load
0.03 A.
Ripple and noise, maximum
180 mVp-p.
Voltage tolerance
−5% to +10%.
Line regulation
±1.0%.
Load regulation
±5.0%.
For CH2, 0.15 A rated is 150 mA, with a 30 mA minimum load.
CH3 Output
Nominal voltage
−16 VDC relative to COM.
Rated set current
2 A.
Operating current range
0.4–2 A.
Minimum load
0.4 A.
Ripple and noise, maximum
180 mVp-p.
Voltage tolerance
−5% to +10%.
Line regulation
±1.0%.
Load regulation
±5.0%.
Input and Energy
AC input
90–264 VAC; 47–63 Hz.
DC input
135–370 VDC.
AC connection
IEC320-C14 three-pole inlet with protective earth.
Input current
1.6 A at 100 VAC; 0.8 A at 230 VAC.
Cold-start inrush, maximum
35 A at 115 VAC; 65 A at 230 VAC.
Leakage current, maximum
0.75 mA at 240 VAC.
Set-up / rise / hold-up
At full load: 1500 / 50 / 20 ms at 230 VAC; 2500 / 50 / 16 ms at 115 VAC.
No-load consumption
<0.3 W.
Energy efficiency
Level VI; EISA 2007/DoE.
Select a suitable mains lead for the C14 inlet and the installation outlet. Confirm mains-lead supply with the order; the datasheet does not state that an AC cord is included. The no-load-consumption rating does not replace the minimum channel loads required for regulated operation.
Protection
Short circuit / overload
120–200% of rated output power; hiccup mode with automatic recovery after the fault condition is removed.
Overvoltage
Zener-diode clamp with output short-circuit protection. No numerical trip threshold is specified.
Cooling, Derating and Environment
Working ambient
−20 to +70°C, subject to derating.
Temperature derating, horizontal
100% load from −20°C through 40°C; 70% at 50°C, 50% at 60°C and 40% at 70°C.
Input-voltage derating, 60 Hz
90% load at 90 VAC, rising to 100% at 100 VAC and remaining at 100% through 264 VAC.
Operating humidity
20–90% RH, non-condensing.
Storage
−20 to +85°C; 10–95% RH, non-condensing.
Temperature coefficient
±0.03%/°C over 0–40°C.
Vibration
10–500 Hz, 2 G; 10 minutes per cycle and 60 minutes along each X, Y and Z axis.
Apply the temperature and input-voltage limits together. Use the horizontal orientation shown in the derating curve and leave room for heat dissipation around the enclosure.
Mechanical Details and Weight
Nominal dimensions, L × W × H
146 × 75.5 × 43 mm.
Enclosure
Fully enclosed 94V-0 flame-retardant plastic case, power-on LED and four rubber feet.
DC cable
UL2464, 18 AWG × 5 conductors; 1000 mm with +150 / −0 mm tolerance.
R1B mechanical dimensions
The connector drawing marks 54.8 mm overall length, 10.2 mm tip length and 13.2 mm diameter; follow the drawing for orientation and clearance.
Catalogue single-unit weight
550 g from the explicit PACKING value of 0.55 kg per unit; a catalogue packing reference, not a measured net or shipping weight.
Packing
36 pieces / 21 kg per carton.
Use the full drawing on PDF page 11 for the cable exit, connector, feet and nameplate positions. Body dimensions do not include the attached cable or plug.
Output Connector and Optional Cable
Standard connector
R1B power DIN 5-pin male.
Model-specific wiring
Obtain the manufacturer-confirmed pin assignment for GP50A58F-R1B before connection. The +16 V / +48 V / −16 V model must not be wired from the generic +5 V pin table.
Connector shell
AC FG is identified on the connector drawing.
The standard connector type is specified, but the combined sheet does not provide a separate pin table for this voltage set. Confirm every output pin and COM with the manufacturer before connecting the load.
For a factory-requested stripped/tinned-lead version of GP50A58F-R1B, obtain the manufacturer-confirmed voltage-to-wire mapping for this exact model. Do not use the generic +5 V/red-wire assignment for the +16 V / +48 V / −16 V output set.
Stripped and tinned leads are a customer-requested configuration, not an additional connector supplied with the standard R1B version. The illustrated lead length L is 70 mm and stripped length L1 is 10 mm; both can be specified by request. No complete alternate order code or separate mating-socket part number is given in these pages.
Dual-output configurations are available by request. They are separate from this three-output model and require confirmation of the complete order code and electrical ratings.
Safety and EMC
Applicable safety standards
IEC62368-1, UL62368-1, CSA22.2 and EAC TP TC 004 are listed. GP50A58F-R1B is explicitly excluded from the listed BS EN/EN62368-1 approval.
Withstand voltage
Input/output: 4242 VDC; input/FG: 2121 VDC.
Isolation resistance
Input/output and input/FG: 100 MΩ at 500 VDC, 25°C and 70% RH.
Conducted and radiated emissions
BS EN/EN55032 (CISPR32), FCC Part 15 / CISPR22 and CAN ICES-3(B) / NMB-3(B): Class B.
Harmonic current
BS EN/EN61000-3-2: Class A.
Voltage flicker
BS EN/EN61000-3-3.
Immunity: BS EN/EN61000-4-2 ESD, level 3 at 8 kV air and level 2 at 4 kV contact; -4-3 RF, level 2 at 3 V/m; -4-4 EFT, level 2 at 1 kV; -4-5 surge, level 3 at 1 kV L–N and 2 kV L,N–PE; -4-6 conducted susceptibility, level 2 at 3 V. Under -4-11: >95% dip for 0.5 periods, 30% dip for 25 periods and >95% interruption for 250 periods.
This is an independent power adapter. Reconfirm whole-system EMC compliance in the final equipment with its actual cabling and installation.
Measurement Conditions and Reliability
Test conditions
Unless otherwise stated: 230 VAC input, rated load, 25°C and 70% RH.
Voltage set point
Measured at the plug terminal with 50% load.
Ripple and noise method
20 MHz bandwidth; 12-inch twisted pair terminated with parallel 0.1 µF and 47 µF capacitors.
Life reference
3 years at 100% load, 40°C and 8 hours/day.
MTBF, minimum
280 thousand hours, MIL-HDBK-217F at 25°C.
Manufacturer warranty
3-year warranty, subject to applicable manufacturer terms.
Catalogue revision
GP50A-SPEC, 2026-01-09; combined PDF pages 9–12.
Voltage tolerance includes set-up tolerance, line regulation and load regulation. Line regulation is measured from low line to high line at rated load. The channel-specific load-regulation values are listed above; Note 6 additionally states load regulation within ±5% and cross regulation within ±15% when measured from light load (20% of rated load) to full load.
Meet all three minimum-load requirements, especially when loads change independently. The combined rating and individual rail ratings apply together.
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