MEAN WELL NPF-40D-20 40W 20V 2A LED Driver
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Key specifications
Complete technical specifications| Output voltage | 20 V |
|---|---|
| Rated current | 2 A |
| Rated power | 40 W |
| AC input range | 90–305 VAC |
| Typical efficiency | 88 % |
| IP rating | IP67 |
|---|---|
| Operating temperature | -40 to 85 °C |
| Power factor correction | Supported |
| Dimensions (L × W × H) | 150 × 53 × 35 mm |
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Complete technical specifications
Rev. 2026-02-09| Output voltage | 20 V |
|---|---|
| Rated current | 2 A |
| Rated power | 40 W |
| AC input range | 90–305 VAC |
|---|---|
| DC input range | 127–431 VDC |
| Frequency range | 47–63 Hz |
| Typical efficiency | 88 % |
| Power factor | 0.95 |
| Power factor correction | Supported |
| Operating temperature | -40 to 85 °C |
|---|---|
| Storage temperature | -40 to 80 °C |
| Operating humidity | 20–95 % RH |
| Vibration | 10 ~ 500Hz, 5G 12min./1cycle, period for 72min. each along X, Y, Z axes |
| Dimensions (L × W × H) | 150 × 53 × 35 mm |
|---|---|
| Net weight | 490.0 g |
| IP rating | IP67 |
| Safety standards | UL8750(type”HL”), UL879(for 12V,24V only), CSA C22.2 No. 250.13-12, ENEC BS EN/EN61347-1, BS EN/EN61347-2-13, BS EN/EN62384 independent, EAC TP TC 004, GB/T19510.1,GB/T19510.213, IP67 approved ; Design refer to BS EN/EN60335-1 |
|---|
These approvals are recorded for the series as a whole. Where a line names particular models or ratings, it applies only to those — read it against this part number, and ask us for the certificate if your approval process needs it.
| Part number | NPF-40D-20 |
|---|---|
| Brand | MEAN WELL |
| Category | AC/DC LED Driver |
| Series | NPF-40D |
Approvals and compliance
From the manufacturer's datasheet for this seriesUnited States
- UL
UL Listing or Recognition means UL Solutions tested samples against the applicable UL safety standard and audits the factory that builds them. A UL file number is the usual evidence an inspector or specifier asks for in North America.
Covers only part of this series: for 12V,24V only
Canada
- CSA
Certification to a CSA C22.2 standard, the Canadian counterpart of the UL series. Datasheets cite the specific C22.2 number, which is how you tell a power-supply certificate from a luminaire-controlgear one.
Europe
- ENEC
ENEC is a pan-European mark for electrical equipment, issued by a national certification body and recognised across the member schemes. It covers both product testing and factory surveillance, which is what separates it from a self-declared CE mark.
Eurasian Economic Union
- EAC
Conformity with the Eurasian Economic Union technical regulations, covering Russia, Belarus, Kazakhstan, Armenia and Kyrgyzstan. TP TC 004 is the low-voltage regulation and TP TC 020 the electromagnetic-compatibility one, so which number appears tells you what was assessed.
An approval above is held by only some models in this series. The datasheet's own wording is quoted beside the mark; read it against this part number, and ask us for the certificate if your approval process needs it.
| Withstand voltage | I/P-O/P:3.75KVAC |
|---|---|
| Isolation resistance | I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH |
| EMC emission | Compliance to BS EN/EN55015, BS EN/EN61000-3-2 Class C (@ load≧60%) ; BS EN/EN61000-3-3; GB/T 17743, GB17625.1,EAC TP TC 020 |
| EMC immunity | Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11; BS EN/EN61547, light industry level(surge immunity Line-Line 2KV);EAC TP TC 020 |
Standards certified against
- EN61347-1
- EN61347-2-13
- EN62384
- GB/T19510.1
- GB/T19510.213
- UL8750
Designed to reference
The datasheet lists these as design references. The series was built to them but has not been certified to them, so do not treat them as approvals.
BS EN/EN60335-1
Read the datasheet's exact wording
UL8750(type”HL”), UL879(for 12V,24V only), CSA C22.2 No. 250.13-12, ENEC BS EN/EN61347-1, BS EN/EN61347-2-13, BS EN/EN62384 independent, EAC TP TC 004, GB/T19510.1,GB/T19510.213, IP67 approved ; Design refer to BS EN/EN60335-1
Reproduced unedited from the manufacturer's datasheet. Where an approval covers only some models, the wording says so. Ask us for the certificate itself if your approval process needs it.
Certificates
Certificate copy supplied with this model.
Enlarge
CE · Certificate number R50453592
Ordering & shipping information
| Part number | NPF-40D-20 |
|---|---|
| Minimum order quantity | 1 |
| Country of origin | China |
| Warranty | 5-year limited warranty from date of manufacture, subject to the case temperature and surge limits in MEAN WELL's published warranty statement. |
| Typical packed weight | 673 g |
| Unit weight | 490 g |
NPF-40D model comparison
View all models| Model | Output voltage | Rated current | Rated power | Price | Availability |
|---|---|---|---|---|---|
| NPF-40D-20 Currently viewing | 20 V | 2 A | 40 W | $26.54 |
Ships in 3–5 business days
|
| NPF-40D-30 | 30 V | 1.34 A | 40.2 W | $30.15 |
Ships in 3–5 business days
|
| NPF-40D-36 | 36 V | 1.12 A | 40.32 W | $28.40 |
Ships in 3–5 business days
|
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Technical data source
- Primary source
- MEAN WELL
- Datasheet revision
- 2026-02-09
- Last verified
View the manufacturer datasheet How we source and verify product data
Specifications are transcribed from the manufacturer datasheet and are subject to change without notice. The current manufacturer datasheet governs in case of any discrepancy.