LRS Series- 50W Single Output Switching Power Supply – Mean Well

USD $ 17.22USD $ 18.06


Product Details

Mean Well Power Switch Mode Power Supply-50W Output

LRS-50 series is a 50W single-output enclosed type power supply with 30mm of low profile design. Adopting the full range 85~264VAC input, the entire series provides an output voltage line of 3.3V, 5V, 12V, 15V, 24V, 36V and 48V.

In addition to the high efficiency up to 90%, the design of metallic mesh case enhances the heat dissipation of LRS-50 that the whole series operates from -30℃ through 70℃ under air convection without a fan. Delivering an extremely low no load power consumption (less than 0.2W), it allows the end system to easily meet the worldwide energy requirement. LRS-50 has the complete protection functions and 5G anti- vibration capability; it is complied with the international safety regulations such as TUV EN62368-1, EN 60335 – 1 , EN 61558 – 1 / – 2 – 16 , UL 62368 – 1 and GB 4943 . LRS- 50 series serves as a high price- to- performance power supply solution for various industrial applications.


Features :

‧Universal AC input / Full range

‧Withstand 300VAC surge input for 5 second

‧No load power consumption<0.2W

‧Miniature size and 1U low profile

‧High operating temperature up to 70℃

‧Protections: Short circuit / Overload / Over voltage

‧Cooling by free air convection

‧Compliance to IEC/EN 60335-1(PD3) and IEC/EN61558-1, -2-16 for household appliances

‧Operating altitude up to 5000 meters (Note.8)

‧Withstand 5G vibration test

‧High efficiency, long life and high reliability

‧LED indicator for power on

‧Over voltage category Ⅲ

‧100% full load burn-in test


MODEL LRS-50-3.3 LRS-50-5 LRS-50-12 LRS-50-15 LRS-50-24 LRS-50-36 LRS-50-48







DC VOLTAGE 3.3V 5V 12V 15V 24V 36V 48V
RATED CURRENT 10A 10A 4.2A 3.4A 2.2A 1.45A 1.1A
CURRENT RANGE 0 ~ 10A 0 ~ 10A 0 ~ 4.2A 0 ~ 3.4A 0 ~ 2.2A 0 ~ 1.45A 0 ~ 1.1A
RATED POWER 33W 50W 50.4W 51W 52.8W 52.2W 52.8W
RIPPLE & NOISE (max.) Note.2 80mVp-p 80mVp-p 120mVp-p 120mVp-p 150mVp-p 200mVp-p 200mVp-p
VOLTAGE ADJ. RANGE 2.97 ~ 3.6V 4.5 ~ 5.5V 10.2 ~ 13.8V 13.5 ~ 18V 21.6 ~ 28.8V 32.4 ~ 39.6V 43.2 ~ 52.8V
VOLTAGE TOLERANCE Note.3 ±3.0% ±2.0% ±1.0% ±1.0% ±1.0% ±1.0% ±1.0%
LINE REGULATION Note.4 ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5%
LOAD REGULATION Note.5 ±2.0% ±1.0% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5%
SETUP, RISE TIME 1000ms, 30ms/230VAC         2000ms,30ms/115VAC at full load
HOLD UP TIME (Typ.) 30ms/230VAC       12ms/115VAC at full load




VOLTAGE RANGE 85 ~ 264VAC         120 ~ 373VDC
EFFICIENCY (Typ.) 80% 83% 86% 88% 88% 89% 90%
AC CURRENT (Typ.) 0.95A/115VAC          0.56A/230VAC




OVER LOAD 110 ~ 150% rated output power
Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE 3.8 ~ 4.45V 5.9~ 7.3V 13.8 ~ 16.2V 18.75 ~ 21.75V 28.8 ~ 33.6V 41.4 ~ 48.6V 55.2 ~ 64.8V
Protection type : Shut down o/p voltage, re-power on to recover





WORKING TEMP. -30 ~ +70℃ (Refer to “Derating Curve”)
WORKING HUMIDITY 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY -40 ~ +85℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT ±0.03%/℃ (0 ~ 50℃)
VIBRATION 10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes
OVER VOLTAGE CATEGORY Ⅲ; Compliance to EN61558, EN50178, EN60664-1, EN62477-1; altitude up to 2000 meters




(Note 9)

SAFETY STANDARDS UL62368-1, TUV EN62368-1, EN60335-1, EN61558-1/-2-16,CCC GB4943.1, BSMI CNS14336-1, EAC TP TC 004, AS/NZS 60950.1(by CB),KC K60950-1(for LRS-50-12/24 only), BIS IS13252(Part1): 2010/IEC 60950-1: 2005 approved
ISOLATION RESISTANCE I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION Compliance to EN55032 (CISPR32) Class B, EN55014, EN61000-3-2,-3, GB/T 9254, BSMI CNS13438, EAC TP TC 020, KC KN32,KN35(for LRS-50-12/24 only)
EMC IMMUNITY Compliance to EN61000-4-2,3,4,5,6,8,11, EN61000-6-2 (EN50082-2), heavy industry level, criteria A, EAC TP TC 020, KC KN32,KN35(for LRS-50-12/24 only)



MTBF 645K hrs min.      MIL-HDBK-217F (25℃)
DIMENSION 99*82*30mm (L*W*H)
PACKING 0.23Kg; 60pcs/14.8Kg/0.88CUFT

1.  All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.

2.  Ripple & noise are measured at 20MHz of bandwidth by using a 12″ twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.

3.  Tolerance : includes set up tolerance, line regulation and load regulation.

4.  Line regulation is measured from low line to high line at rated load.

5.  Load regulation is measured from 0% to 100% rated load.

6.  Length of set up time is measured at cold first start. Turning ON/OFF the power supply very quickly may lead to increase of the set up time.

7.  3.3V,5V when the load factor 0~50%, the switching power less is reduced by burst operation, which will cause ripple and ripple noise to go beyond the specifications.

8.  The ambient temperature derating of 5℃/1000m is needed for operating altitude greater than 2000m(6500ft).

9.  The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives.