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Mean Well SLD-50-56 Linear LED Driver 50.4W 60V 1050mA - Slim

ultra slim design30mm widthefficiency up to 90%Class II and SELV

SKU SLD-50-56

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Overview

SLD-50-56 is the model of this series: rated current 1050mA, rated power 50.4W, typical efficiency 90%.

SLD-50 series is a 50W AC/DC LED driver featuring the dual modes constant voltage and constant current output. SLD-50 operates from 110～305VAC and offers models with different rated voltage ranging between 12V and 56V. Thanks to the high efficiency up to 90%, with the fanless design, the entire series is able to operate for -20℃ ~ +90℃ case temperature under free air convection. SLD-50 design with low profile and linear housing which is good for signage and linear luminaire applications.

Features

Constant Voltage + Constant Current mode output
Wide input range 110-305VAC with PFC function
Compliance with BS EN/EN61347 regulation
Class 2/Ⅱ power unit
Slim and Linear housing Design
No load power consumption <0.5W
3 years warranty

Specifications

SLD-50-56Specifications from the official datasheet (2026-02-09 edition)

OUTPUT

RATED CURRENT: 1050mA
RATED POWER^Note.2: 50.4W
CONSTANT CURRENT REGION^Note.3: 30 ~56V
FULL POWER CURRENT RANGE: 900~1400mA
OPEN CIRCUIT VOLTAGE (max.): 60V
CURRENT ADJ. RANGE: 450-1400mA
CURRENT RIPPLE: 5.0%(@rated current)
CURRENT TOLERANCE: ±5%
SET UP TIME^Note.5: 500ms/230VAC, 1200ms/115VAC

INPUT

VOLTAGE RANGE^Note.2: 110 ~ 305VAC 155VDC ~ 431VDC (Please refer to "STATIC CHARACTERISTIC" ang “ DRIVING METHODS OF LED MODULE"section)
FREQUENCY RANGE: 47 ~ 63Hz
POWER FACTOR (Typ.): PF≧0.97 / 115VAC, PF≧0.95 / 230VAC, PF≧0.92 / 277VAC at full load (Please refer to "Power Factor Characteristic" section)
TOTAL HARMONIC DISTORTION: THD< 10% (@ load≧60% at 115VAC/230VAC ,@load≧75% at 277VAC) Please refer to “TOTAL HARMONIC DISTORTION (THD)” section
EFFICIENCY (Typ.): 90%
AC CURRENT (Typ.): 0.6A / 115VAC 0.3A / 230VAC 0.25A / 277VAC
INRUSH CURRENT(Typ.): COLD START 50A(twidth=270μs measured at 50% Ipeak) at 230VAC; Per NEMA 410
MAX. NO. of PSUs on 16A CIRCUIT BREAKER: 8 unit(circuit breaker of type B) / 16 units(circuit breaker of type C) at 230VAC
LEAKAGE CURRENT: <0.25mA / 277VAC
NO LOAD POWER CONSUMPTION: <0.5W

PROTECTION

OVER POWER: 110 ~ 150% Hiccup mode, recovers automatically after fault condition is removed
SHORT CIRCUIT: Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 61 ~ 80V Shut down output voltage, re-power on to recovery
OVER TEMPERATURE: Shut down output voltage, re-power on to recovery

ENVIRONMENT

WORKING TEMP.: Tcase=-20 ~ +90℃(Please refer to "OUTPUT LOAD vs TEMPERATURE" section)
MAX. CASE TEMP.: Tcase=+90℃
WORKING HUMIDITY: 20 ~ 95% RH non-condensing
STORAGE TEMP.: -40 ~ +80℃
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 60℃)
VIBRATION: 10 ~ 500Hz, 2G 12min./1cycle, period for 72min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS: UL8750,CSA C22.2 No. 250.13-12, ENEC BS EN/EN61347-1, BS EN/EN61347-2-13 independent, BS EN/EN62384, EAC TP TC 004 , GB/T19510.1,GB/T19510.213, IS15885(Part2/Sec13) ,EN60335-1 approved
WITHSTAND VOLTAGE: I/P-O/P:3.75KVAC
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55015(CISPR15) , GB/T 17743 , EN IEC 55014-1(CISPR 14-1) -----
Radiated BS EN/EN55015(CISPR15) , GB/T 17743 , EN IEC 55014-1(CISPR 14-1) -----
Harmonic Current BS EN/EN61000-3-2 , GB17625.1 Class C @load≥60%
Voltage Flicker BS EN/EN61000-3-3 -----; BS EN/EN61547 ,EN IEC 55014-2
EMC IMMUNITY: Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 2, 4KV contact
Radiated BS EN/EN61000-4-3 Level 2
EFT / Burst BS EN/EN61000-4-4 Level 2
Surge BS EN/EN61000-4-5 1KV/Line-Line
Conducted BS EN/EN61000-4-6 Level 2
Magnetic Field BS EN/EN61000-4-8 Level 2
Voltage Dips and Interruptions BS EN/EN61000-4-11 70% residual volatge for 10 periods , 0% residual volatge for 0.5 periods , 40% residual volatge for 10 periods , 70% residual volatge for 25 periods

Parameter	Standard	Test Level
Conducted	BS EN/EN55015(CISPR15) , GB/T 17743 , EN IEC 55014-1(CISPR 14-1)	-----
Radiated	BS EN/EN55015(CISPR15) , GB/T 17743 , EN IEC 55014-1(CISPR 14-1)	-----
Harmonic Current	BS EN/EN61000-3-2 , GB17625.1	Class C @load≥60%
Voltage Flicker	BS EN/EN61000-3-3	-----; BS EN/EN61547 ,EN IEC 55014-2

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, 8KV air; Level 2, 4KV contact
Radiated	BS EN/EN61000-4-3	Level 2
EFT / Burst	BS EN/EN61000-4-4	Level 2
Surge	BS EN/EN61000-4-5	1KV/Line-Line
Conducted	BS EN/EN61000-4-6	Level 2
Magnetic Field	BS EN/EN61000-4-8	Level 2
Voltage Dips and Interruptions	BS EN/EN61000-4-11	70% residual volatge for 10 periods , 0% residual volatge for 0.5 periods , 40% residual volatge for 10 periods , 70% residual volatge for 25 periods

OTHERS

MTBF: 4150.1K hrs min. Telcordia SR-332 (Bellcore) ; 362.8K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 280*30*16.8mm (L*W*H)
PACKING: 0.175Kg;64pcs/12.4Kg/ 0.67CUFT

Test conditions and notes9

1. All parameters NOT specially mentioned are measured at 230VAC input, rated current and 25℃ of ambient temperature.
2. De-rating may be needed under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.
3. Please refer to "DRIVING METHODS OF LED MODULE".
4. This series meets the typical life expectancy of >30,000 hours of operation when Tcase, particularly tc point (or TMP, per DLC), is about 75℃ or less.
5. 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.
6. 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)
7. Please refer to the warranty statement on MEAN WELL's website at http://www.meanwell.com
8. 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).
9. RCM is on a voluntary basis. Non IC classification Independent LED control gear is not suitable for residential installations but recommend to be used for commercial decoration/sign board/Luminaire lighting purpose.

Technical drawings

SLD-50-56 DRIVING METHODS OF LED MODULE — DRIVING METHODS OF LED MODULE

SLD-50-56 OUTPUT LOAD vs TEMPERATURE — OUTPUT LOAD vs TEMPERATURE

SLD-50-56 STATIC CHARACTERISTIC — STATIC CHARACTERISTIC

SLD-50-56 TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

SLD-50-56 Mechanical Specification — Mechanical Specification

Typical applications

Downloads

Certificates5

UL Certificate (SLD-50)(EN) ASPX Download

ENEC Certificate (SLD-50)(EN) ASPX Download

CCC Certificate (SLD-50)(CN) ASPX Download

CB Certificate (SLD-50)(EN) ASPX Download

EMC Certificate (SLD-50)(EN) ASPX Download

Catalogues1

Mean Well LED Driver Catalog PDF Download

FAQ

What type of LED driver is the Mean Well SLD-50-56?

The SLD-50-56 is a slim linear LED driver rated at 50.4W. It is described as a constant voltage plus constant current mode output model, with a 60V output and 1050mA rated current.

What applications is the SLD-50-56 best suited for?

This model is suited to LED lighting applications that need a slim driver form factor and a regulated 60V, 1050mA output. It is generally a fit for commercial or industrial LED projects where compact size, PFC support, and dependable output are important.

Does the Mean Well SLD-50-56 support dimming?

No. The listed dimming control for the SLD-50-56 is none, so it should be treated as a non-dimming LED driver. Buyers needing dimming should compare it against a dimmable alternative rather than assume dimming is built in.

What input range does the SLD-50-56 support?

The product description lists a wide AC input range of 110-305VAC, with PFC function. It also references a 155-431VDC input range in the general specification section.

Is the SLD-50-56 appropriate for demanding operating environments?

The listed temperature range is -20°C to 90°C, which indicates it is designed for a broad operating envelope. Buyers should still confirm that the actual enclosure and site conditions stay within the product's rated limits.

How does the SLD-50-56 compare when space is limited?

One of the main differentiators of this model is its slim linear housing design. That makes it a stronger option for projects where the driver needs to fit into tighter spaces than a bulkier power supply would allow.

What warranty is offered for the Mean Well SLD-50-56?

The SLD-50-56 includes a 3-year warranty. That gives buyers a clear manufacturer-backed coverage period for this specific model.

Payment & Security

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Model	Power	Voltage	Current	IP Rating
Mean Well SLD-50-24 Linear LED Driver 50.4W 24V 2100mA - Slim	50.4W	24V	2.1A	IP20	View
Mean Well SLD-50-12 Linear LED Driver 50.4W 12V 4200mA - Slim	50.4W	12V	4.2A	—	View

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