MEAN WELL NGE12U18-P1J is an NGE12 single-output wall-mounted AC/DC adapter rated at 18 V DC, 0.83 A and 15 W. This is the US version with a non-interchangeable plug and folding pins, with a standard P1J center-positive DC cable plug. The Class II, 2 MOPP design is intended for compatible electronic, medical, household and industrial equipment; load and input derating apply.
Product Datasheet
Download MEAN WELL NGE12 Datasheet (PDF)
The NGE12 section is on PDF pages 1, 2, 3, 4, 5, 6, 7, 8, 9. Refer to the complete mechanical drawings and notes when planning installation.
Model-Specific DC Output
| Complete order number |
NGE12U18-P1J |
| Nominal output |
18 V DC; rated current 0.83 A; current range 0–0.83 A. |
| Catalogue-rated output power |
15 W. |
| Ripple and noise, maximum |
180 mVp-p; see measurement conditions. |
| Typical efficiency |
88.5% under the catalogue reference conditions. |
| Voltage tolerance |
±3.0%; includes set-up, line and load regulation. |
| Line regulation |
±1.0%. |
| Load regulation |
±3.0%. |
| Set-up / rise / hold-up, full load |
1500 / 30 / 30 ms at 230 VAC; 3000 / 30 / 10 ms at 115 VAC. |
AC Input, Protection and Energy Performance
| Input range |
80–264 VAC or 113–370 VDC; AC frequency 47–63 Hz. |
| AC input current |
0.4 A at 115 VAC; 0.25 A at 230 VAC. |
| Cold-start inrush, maximum |
40 A at 115 VAC; 80 A at 230 VAC. |
| Touch current, maximum |
<100 µA rms at 264 VAC. |
| Short circuit / overload |
110–150% of rated output power; hiccup mode, automatic recovery after the fault is removed. |
| Overvoltage |
115–140% of rated output voltage; Zener-diode clamp. |
| No-load power |
<0.075 W. |
| Efficiency classification |
Catalogue energy-efficiency Level VI; LPS listed. |
The catalogue describes compliance with EISA 2007/DoE, Canada NRCan, Australia/New Zealand MEPS, Korea KMEPS, EU ErP and CoC Version 5. Note 9 additionally states design conformity with US DoE Level VII, docket EERE-2020-BT-STD-0006; this design statement is distinct from the Level VI marking.
Operating Conditions and Derating
| Working temperature |
-30 to +70°C, subject to the load curve. |
| Ambient-temperature curve |
100% load from -30 to +45°C; 75% at +60°C; 50% at +70°C. |
| Input-voltage curve, 60 Hz |
80% load at 80 VAC; rises to 100% at 100 VAC and stays at 100% through 264 VAC. |
| Working humidity |
20–90% RH, non-condensing. |
| Storage temperature / humidity |
-20 to +85°C; 10–95% RH, non-condensing. |
| Temperature coefficient |
±0.03%/°C from 0 to +45°C. |
| Vibration |
10–500 Hz, 2 G; 10 minutes per cycle, 60 minutes along each X, Y and Z axis. |
Select the load to meet both the ambient-temperature and input-voltage limits. The upper temperature limit is not a full-load rating throughout the range.
AC Version, Dimensions and Installation
| AC configuration |
US version with a non-interchangeable plug and folding pins |
| Safety class |
Class II; no earth pin or FG. |
| Dimensions / case |
48 × 28 × 55 mm (catalogue L × W × H); mechanical drawing tolerance ±1 mm; case NGE18. |
| Construction |
28 mm slim, enclosed 94V-0 flame-retardant plastic case; IP21. |
| Reference mass |
112 g per main body, explicitly listed in the catalogue packing table; not a measured shipping weight. |
The dimensions describe the adapter body. The fitted AC plug and, on cable versions, the DC lead project beyond the body outline shown in the mechanical drawing.
The AC inlet is built into this U version. The interchangeable AC PLUG-EU4/US4/UK4/AU4/CN4/KR4/IN4 and MIX4/MIX5 sets apply to the I version, not to this fixed-inlet model.
DC Connection
| Supplied DC output |
P1J tuning-fork plug; 5.5 mm OD × 2.1 mm ID × 11±0.5 mm insertion length. |
| Polarity |
C+ / center positive: inside +V, outside -V. |
| Fixed DC cable |
UL 1185, 20 AWG, 1500±50 mm; the catalogue assigns 18 AWG to 5–9 V and 20 AWG to 12–24 V. |
Check the equipment socket dimensions, polarity, required voltage and current before connection.
Safety and Medical Integration
| Insulation / intended medical use |
2 MOPP; catalogue BF-rated application suitability. The adapter rating does not certify a complete medical device or patient-connected system. |
| Input/output withstand |
4000 VAC. |
| Input/output insulation resistance |
100 MΩ at 500 VDC, 25°C and 70% RH. |
| AC-version certificate grid |
CB, PSE, UL, BSMI, FCC. Apply the listed regional scope to the supplied U version. |
The CB safety table lists IEC62368-1, IEC60601-1 and IEC60601-1-11, IEC61558-1 and IEC61558-2-16, and IEC60335-1; the applicable configuration and regional certificate scope must be retained.
For the UL scope shown for this AC version, the table lists UL62368-1 / CSA C22.2 No.62368-1 and ANSI/AAMI ES60601-1 and -1-11 (3.2 version), with CAN/CSA-C22.2 No.60601-1 and -1-11.
The U-type table also lists PSE J62368-1 and BSMI CNS15598-1. Its additional ANSI/AAMI ES60601-1-11 and CAN/CSA-C22.2 No.60601-1-11 entries are expressly marked for U type only.
Final equipment must be evaluated for its own safety and EMC requirements; adapter certificates and BF suitability do not provide whole-system approval.
EMC Reference
| Conducted / radiated emissions |
Class B: BS EN/EN55032 (CISPR32) / EN55011; FCC Part15; CNS15936; GB/T9254.1-2021; KS C9832. |
| Harmonic current |
BS EN/EN61000-3-2, Class A. |
| Immunity framework |
BS EN/EN55035 (CISPR35); BS EN/EN60601-1-2 (IEC60601-1-2); KS C9835. |
| ESD |
BS EN/EN61000-4-2: Level 4, 15 kV air and 8 kV contact. |
| RF field / EFT |
BS EN/EN61000-4-3: Level 2, 3 V/m; -4-4: Level 3, 2 kV. |
| Surge / conducted immunity |
BS EN/EN61000-4-5: Level 3, 1 kV L-N; -4-6: Level 2, 3 V. |
| Magnetic field |
BS EN/EN61000-4-8: Level 4, 30 A/m. |
| Dips / interruptions |
BS EN/EN61000-4-11: >95% dip for 0.5 period, 30% dip for 25 periods, >95% interruption for 250 periods. |
Optional DC Terminations and Quick Adapters
| P1I |
Straight tuning fork; OD / ID / length 5.5 / 2.1 / 9.5 mm; quick adapter: Available; 7.5 A maximum. |
| P1L |
Straight tuning fork; OD / ID / length 5.5 / 2.5 / 9.5 mm; quick adapter: Available; 7.5 A maximum. |
| P1M |
Straight tuning fork; OD / ID / length 5.5 / 2.5 / 11.0 mm; quick adapter: Available; 7.5 A maximum. |
| P1IR |
Right-angle tuning fork; OD / ID / length 5.5 / 2.1 / 9.5 mm; quick adapter: Available; 7.5 A maximum. |
| P1JR |
Right-angle tuning fork; OD / ID / length 5.5 / 2.1 / 11.0 mm; quick adapter: Available; 7.5 A maximum. |
| P1LR |
Right-angle tuning fork; OD / ID / length 5.5 / 2.5 / 9.5 mm; quick adapter: Available; 7.5 A maximum. |
| P1MR |
Right-angle tuning fork; OD / ID / length 5.5 / 2.5 / 11.0 mm; quick adapter: Available; 7.5 A maximum. |
| P2I |
Straight barrel; OD / ID / length 5.5 / 2.1 / 9.5 mm; quick adapter: None listed. |
| P2J |
Straight barrel; OD / ID / length 5.5 / 2.1 / 11.0 mm; quick adapter: None listed. |
| P2L |
Straight barrel; OD / ID / length 5.5 / 2.5 / 9.5 mm; quick adapter: None listed. |
| P2M |
Straight barrel; OD / ID / length 5.5 / 2.5 / 11.0 mm; quick adapter: None listed. |
| P2IR |
Right-angle barrel; OD / ID / length 5.5 / 2.1 / 9.5 mm; quick adapter: None listed. |
| P2JR |
Right-angle barrel; OD / ID / length 5.5 / 2.1 / 11.0 mm; quick adapter: None listed. |
| P2LR |
Right-angle barrel; OD / ID / length 5.5 / 2.5 / 9.5 mm; quick adapter: None listed. |
| P2MR |
Right-angle barrel; OD / ID / length 5.5 / 2.5 / 11.0 mm; quick adapter: None listed. |
| P2S(S761K) |
Floating locking; OD / ID / length 5.53 / 2.03 / 12.06 mm; quick adapter: None listed. SWITCHCRAFT original or equivalent |
| P2K(761K) |
Floating locking; OD / ID / length 5.53 / 2.54 / 12.06 mm; quick adapter: None listed. SWITCHCRAFT original or equivalent |
| P2C(S760K) |
Floating locking; OD / ID / length 5.53 / 2.03 / 9.52 mm; quick adapter: None listed. SWITCHCRAFT original or equivalent |
| P2D(760K) |
Floating locking; OD / ID / length 5.53 / 2.54 / 9.52 mm; quick adapter: None listed. SWITCHCRAFT original or equivalent |
| P3A |
Mini pin; OD / ID / length 2.35 / 0.7 / 11.0 mm; quick adapter: Available; 5 A maximum. EIAJ equivalent |
| P3B |
Mini pin; OD / ID / length 4.0 / 1.7 / 11.0 mm; quick adapter: Available; 5 A maximum. EIAJ equivalent |
| P3C |
Mini pin; OD / ID / length 4.75 / 1.7 / 11.0 mm; quick adapter: Available; 5 A maximum. EIAJ equivalent |
| P4A |
Center pin; OD / ID / length 5.5 / 3.4 / 11.0 mm; quick adapter: Available; 7.5 A maximum. Center-pin diameter 1.0 mm; EIAJ equivalent |
| P4B |
Center pin; OD / ID / length 6.5 / 4.4 / 11.0 mm; quick adapter: Available; 7.5 A maximum. Center-pin diameter 1.4 mm; EIAJ equivalent |
| P4C |
Center pin; OD / ID / length 7.4 / 5.1 / 11.0 mm; quick adapter: Available; 7.5 A maximum. Center-pin diameter 0.6 mm; EIAJ equivalent |
| R6B |
Locking male mini-DIN, 3 pins; quick adapter: Available; 7.5 A maximum. KYCON KPPX-3P equivalent; pin 1 +Vo, pin 2 -Vo, pin 3 +Vo |
| R7B |
Locking male mini-DIN, 4 pins; quick adapter: Available; 7.5 A maximum. KYCON KPPX-4P equivalent; pins 1 and 4 +Vo, pins 2 and 3 -Vo |
These are catalogue cable-termination options. Factory replacement of the standard DC plug is subject to a minimum order quantity; the expressly available quick-adapter accessories are sold separately without a minimum order quantity. Match the interface to the supplied output configuration.
Quick-adapter limits are 7.5 A for the listed tuning-fork, center-pin and R6B/R7B types, and 5 A for P3A/P3B/P3C. They do not increase this adapter’s output rating. Barrel and floating-lock types have no quick-adapter accessory listed.
Stripped and tinned leads can be requested: lead 1 (ribbed) +Vo, lead 2 (lettered) -Vo. Standard lengths shown are L = 25 mm and L1 = 10 mm; other lengths are by request. This option has no listed quick adapter.
Select matching dimensions, polarity and the lowest applicable current rating across the power supply, connector and load. Optional plugs and quick adapters are not extra items included with the stated standard order number.
Measurement and Service References
| General test conditions |
230 VAC input, rated load, 25°C and 70% RH unless separately specified. |
| DC voltage set point |
Measured at the output-plug terminal at 50% load. |
| Ripple/noise test |
20 MHz bandwidth; 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors. |
| Line / load regulation tests |
Line: low to high input at rated load. Load: 0% to 100% rated output load. |
| Minimum MTBF reference |
1272.8 thousand hours, MIL-HDBK-217F at 25°C; 7192.4 thousand hours, Telcordia TR/SR-332 (Bellcore) at 25°C. |
| Catalogue warranty |
3 years. |
| Catalogue version |
2026-01-14; physical PDF pages 1–9. |
Use the manufacturer’s installation instructions for the supplied configuration. MTBF values are statistical reference data, not a guaranteed service life.
