Image shown is a representation only. Exact specifications should be obtained from the product datasheet.

Mean Well NPF-120-20 Power Supply 120W 20V 6A

Name: Mean Well NPF-120-20 Power Supply 120W 20V 6A
Brand: Mean Well
SKU: NPF-120-20
Price: 49.58 USD
Availability: InStock

fully isolated plastic caseIP67Class II design without FG

SKU NPF-120-20

$49.58 USD

Shipping calculated at checkout.

Select model — 8 in this family

NPF-120-20

NPF-40-20 Fixed output Backorder$31.15 USD

NPF-40D-20 Dimmable Backorder$29.49 USD

NPF-60-20 Fixed output Backorder$33.86 USD

NPF-60D-20 Dimmable Backorder$36.38 USD

NPF-90-20 Fixed output Backorder$47.37 USD

NPF-90D-20 Dimmable Backorder$49.65 USD

NPF-120-20 Fixed output Backorder$49.58 USD

NPF-120D-20 Dimmable Backorder$51.68 USD

Product variants

Available to order

Overview

NPF-120-20 is the 20V output model of this series: rated current 6A, rated power 120W, typical efficiency 90%.

NPF-120 series is a 120W AC/DC LED driver featuring the dual modes constant voltage and constant current output. NPF-120 operates from 90～305VAC and offers models with different rated voltage ranging between 12V and 54V. Thanks to the high efficiency up to 90.5%, with the fanless design, the entire series is able to operate for -40℃ ~ +90℃ case temperature under free air convection. The entire series is rated with IP67 ingress protection level and is suitable to work for a variety of applications at dry, damp or wet locations.

Features

Constant Voltage + Constant Current mode output
Plastic housing with Class II design
Built-in active PFC function
No load power consumption <0.15W
IP67 rating for indoor or outdoor installations
Typical lifetime>50000 hours
5 years warranty

Specifications

NPF-120-20Specifications from the official datasheet (2026-02-09 edition)

OUTPUT

DC VOLTAGE: 20V
CONSTANT CURRENT REGION^Note.2: 12 ~ 20V
RATED CURRENT: 6A
RATED POWER^Note.5: 120W
RIPPLE & NOISE (max.)^Note.3: 150mVp-p
VOLTAGE TOLERANCE^Note.4: ±4.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME^Note.6: 500ms, 80ms 115VAC / 230VAC
HOLD UP TIME (Typ.): 16ms/230VAC 16ms/115VAC

INPUT

VOLTAGE RANGE^Note.5: 90 ~ 305VAC 127 ~ 431VDC (Please refer to "STATIC CHARACTERISTIC" section)
FREQUENCY RANGE: 47 ~ 63Hz
POWER FACTOR: PF≧0.97/115VAC, PF≧0.96/230VAC, PF≧0.94/277VAC@full load (Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)
TOTAL HARMONIC DISTORTION: THD< 20%(@load≧60%/115VC,230VAC; @load≧75%/277VAC) (Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)
EFFICIENCY (Typ.): 90%
AC CURRENT: 1.3A / 115VAC 0.65A / 230VAC 0.55A / 277VAC
INRUSH CURRENT(Typ.): COLD START 60A(twidth=520μs measured at 50% Ipeak) at 230VAC; Per NEMA 410
MAX. No. of PSUs on 16A CIRCUIT BREAKER: 4 units (circuit breaker of type B) / 6 units (circuit breaker of type C) at 230VAC
LEAKAGE CURRENT: <0.25mA / 277VAC
NO LOAD POWER CONSUMPTION: <0.15W

PROTECTION

OVER CURRENT: 95 ~ 108% Constant current limiting, recovers automatically after fault condition is removed
SHORT CIRCUIT: Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 23 ~ 27V Shut down and latch off o/p voltage, re-power on to recover
OVER TEMPERATURE: Shut down o/p voltage, re-power on to recover

ENVIRONMENT

WORKING TEMP.: Tcase=-40 ~ +90℃ (Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)
MAX. CASE TEMP.: Tcase=+90℃
WORKING HUMIDITY: 20 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +80℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 5G 12min./1cycle, period for 72min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS^Note.8: UL8750(type"HL"), CSA C22.2 No. 250.13-12, EN BS EN/EN61347-1, BS EN/EN61347-2-13 independent, BS EN/EN62384, EAC TP TC 004,GB/T19510.1,GB/T19510.213, IP67 approved; Design refer to BS EN/EN60335-1
WITHSTAND VOLTAGE: I/P-O/P:3.75KVAC
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION^Note.8: 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

OTHERS

MTBF: 2632.6K hrs min. Telcordia SR-332 (Bellcore) ; 295.2Khrs min. MIL-HDBK-217F (25℃)
DIMENSION: 191*63*37.5mm (L*W*H)
PACKING: 0.97Kg; 15pcs/15.6Kg/0.87CUFT

Certifications & ratings

Type: HL

Test conditions and notes11

1. All parameters NOT specially mentioned are measured at 230VAC input, rated current and 25℃ of ambient temperature.
2. Please refer to "DRIVING METHODS OF LED MODULE".
3. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
4. Tolerance : includes set up tolerance, line regulation and load regulation.
5. De-rating may be needed under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.
6. Length of set up time is measured at first cold start. Turning ON/OFF the driver may lead to increase of the set up time.
7. The driver is considered as a component that will be operated in combination with final equipment. Since EMC performance will be affected by the complete installation, the final equipment manufacturers must re-qualify EMC Directive on the complete installation again. (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf)
8. This series meets the typical life expectancy of >50,000 hours of operation when Tcase, particularly tc point (or TMP, per DLC), is about 75℃ or less.
9. Please refer to the warranty statement on MEAN WELL's website at http://www.meanwell.com
10. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
11. For any application note and IP water proof function installation caution, please refer our user manual before using. https://www.meanwell.com/Upload/PDF/LED_EN.pdf

Technical drawings

NPF-120-20 BLOCK DIAGRAM — BLOCK DIAGRAM

NPF-120-20 OUTPUT LOAD vs TEMPERATURE — OUTPUT LOAD vs TEMPERATURE

NPF-120-20 STATIC CHARACTERISTIC — STATIC CHARACTERISTIC

NPF-120-20 TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

NPF-120-20 MECHANICAL SPECIFICATION — MECHANICAL SPECIFICATION

NPF-120-20 Recommend Mounting Direction — Recommend Mounting Direction

Typical applications

LED panel lighting
LED downlight
LED decorative lighting
LED tunnel lighting
Moving sign
Type "HL" for use in Class I, Division 2 hazardous (Classified) location

Downloads

Certificates6

UL Certificate (NPF-120)(EN) PDF Download

CB Certificate (NPF-120)(EN) PDF Download

EMC Certificate (NPF-120)(EN) PDF Download

ENEC Certificate (NPF-120)(EN) PDF Download

ErP Certificate (NPF-120)(EN) PDF Download

CCC Certificate(NPF-120)(CN) PDF Download

Catalogues1

Mean Well LED Driver Catalog PDF Download

FAQ

Is the NPF-120-20 rated for outdoor or wet-location use?

Yes. The IP67 rating on the NPF-120-20 means it is sealed against dust and can withstand temporary immersion in water. Combined with its working case temperature (Tcase) range of -40°C to +90°C (with load derating per the output load vs temperature curve), it is suitable for outdoor signage, facade lighting, and other exposed installations.

What LED applications suit the NPF-120-20's 20V output?

The NPF-120-20 supplies 20V DC at 6A (120W). It is a practical choice for 20V-rated LED modules used in architectural accent lighting, retail display fixtures, and mid-voltage LED strip systems designed to run at 20V, with a constant-current region of 12–20V.

How does the NPF-120-20 compare to its 120W siblings at 24V and 30V?

All three share IP67 protection, the 191.0 × 63.0 × 37.5 mm housing, and 0.97 kg weight. The NPF-120-20 outputs 20V at 6A (CC range 12–20V); the NPF-120-24 outputs 24V at 5A (CC range 14.4–24V); the NPF-120-30 outputs 30V at 4A (CC range 18–30V). Each is suited to LED loads rated at its respective voltage.

Does the NPF-120-20 support universal mains input?

Yes. The NPF-120-20 accepts 90–305VAC, covering both 120VAC (North America) and 230VAC (Europe/Asia) mains voltages without any manual voltage switching. This simplifies global product procurement and reduces the number of SKUs needed for multi-region deployments.

Payment & Security

Payment methods

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Please log in to write a review.

{ "id":8650568663360, "variants" :[{ "context":"default", "variant_id": 46615228809536, "sku":"NPF-120-20", "inventory_qty" : 0, "customer" :true, "custom_html" :"\u003cdiv class=\"price\"\u003e\n \u003cdiv class=\"price__default\"\u003e\n \u003cstrong class=\"price__current\"\u003e$49.58\u003c\/strong\u003e\n \u003cs class=\"price__was\"\u003e\u003c\/s\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"unit-price relative\" hidden\u003e\u003cspan class=\"visually-hidden\"\u003eUnit price\u003c\/span\u003e\u003cspan class=\"unit-price__price\"\u003e\u003c\/span\u003e\u003cspan class=\"unit-price__separator\"\u003e \/ \u003c\/span\u003e\u003cspan class=\"unit-price__unit\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n \u003cdiv class=\"price__no-variant\" hidden\u003e\n \u003cstrong class=\"price__current\"\u003eUnavailable\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003c\/div\u003e", "volume_html" :"\u003cvolume-pricing class=\"parent-display inside_product_form\" id=\"volume-pricing-main\" \u003e\u003c\/volume-pricing\u003e" } ] }