ENCLOSED SWITCHING POWER SUPPLY

LRS-50 Switching Power Supply

33–52.8W Enclosed Switching Power Supply

Compact enclosed AC/DC switching power supply available with 3.3V, 5V, 12V, 15V, 24V, 36V and 48V DC output versions for industrial control, automation and general electronic equipment.

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Hong Kong MING WELL LRS-50 enclosed switching power supply

33–52.8W Rated Power Range

3.3–48V Output Voltage Options

85–264VAC AC Input Range

Up to 90% Efficiency

99 × 82 × 30 mm Overall Dimensions

PRODUCT OVERVIEW

LRS-50 Switching Power Supply

The LRS-50 Series provides seven DC output voltage versions: 3.3V, 5V, 12V, 15V, 24V, 36V and 48V. Rated output power ranges from 33W to 52.8W depending on the selected model.

✓

Wide Input Range

85–264VAC or 120–370VDC input.

⚡

Seven Output Versions

3.3V, 5V, 12V, 15V, 24V, 36V and 48V DC outputs.

◎

Compact Size

Overall dimensions: 99 × 82 × 30 mm.

↗

Wide Temperature Range

Operating temperature: -30°C to +70°C.

OUTPUT SPECIFICATIONS

LRS-50 Model Range

Electrical output specifications for each available voltage version.

Specification	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	80mVp-p	80mVp-p	120mVp-p	120mVp-p	150mVp-p	200mVp-p	200mVp-p
Voltage Adjustment Range	±10%	±10%	±10%	±10%	±10%	±10%	±10%
Voltage Accuracy	±3.0%	±2.0%	±1.0%	±1.0%	±1.0%	±1.0%	±1.0%
Line Regulation	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%
Load Regulation	±2.0%	±1.0%	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%
Efficiency	80%	83%	86%	88%	88%	89%	90%
Overvoltage Protection	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

TECHNICAL DATA

General Specifications

Input

Voltage Range 85–264VAC / 120–370VDC

Frequency Range 47–63Hz

AC Current 0.95A / 115VAC, 0.56A / 230VAC

Inrush Current 45A / 230VAC, cold start

Leakage Current < 0.75mA / 240VAC

Timing

Start / Rise Time 1000ms / 30ms at 230VAC; 2000ms / 30ms at 115VAC, at full load

Hold-up Time 30ms at 230VAC; 12ms at 115VAC, at full load

Environment

Working Temperature -30°C to +70°C

Working Humidity 20–90% RH, non-condensing

Storage Temperature / Humidity -40°C to +85°C, 10–95% RH, non-condensing

Temperature Coefficient ±0.03% / °C (0–50°C)

Vibration 10–500Hz, 5G, 10 min/cycle; X, Y and Z axes, 60 min each

Overvoltage Category Category III; EN61558, EN50178, EN60664-1, EN62477-1; altitude up to 2000 m

Safety & Mechanical

Withstand Voltage I/P–O/P: 3KVAC; I/P–FG: 2KVAC; O/P–FG: 1.25KVAC

Isolation Resistance I/P–O/P, I/P–O/P–FG: 100MΩ / 500VDC / 25°C / 70% RH

MTBF ≥ 645K hrs, MIL-HDBK-217F (25°C)

Dimensions 99 × 82 × 30 mm

Packaging 0.23kg; 60pcs / 14.8kg / 0.88CUFT

Safety Standards

Safety Norms UL60950-1, TUV EN60950-1, EN60335-1, EN61558-1/-2-16, CCC GB4943.1, BSMI CNS1436-1, EAC TC TP 004, AS/NZS 60950.1 (by CB)

EMC

EMC Emission EN55032 (CISPR32) Class B, EN55014, EN61000-3-2, EN61000-3-3, GB/T 9254, BSMI CNS 13438, EAC TP TC 020

EMC Immunity EN61000-4-2,3,4,5,6,8,11; EN61000-6-2 (EN50082-2); Class A heavy industrial standard; EAC TP TC 020

PROTECTION

Built-in Protection Functions

Overload Protection

Protection range is approximately 110%–150% of rated output power. Hiccup-mode protection is used. The power supply automatically recovers after the abnormal load condition is removed.

Overvoltage Protection

The overvoltage protection level depends on the selected output model. Protection turns off the output voltage and recovery is achieved after restart. The individual protection ranges are shown in the model table above.

MECHANICAL DIMENSIONS

LRS-50 Dimension Drawing

Mechanical enclosure and mounting dimensions.

LRS-50 switching power supply dimensions

Overall Size: 99 × 82 × 30 mm

DIMENSIONS IN MILLIMETERS

APPLICATIONS

Typical Applications

Industrial Automation Automation equipment and production systems.

Control Equipment Electrical control and monitoring equipment.

Electronic Equipment Equipment requiring stable DC power.

Industrial Systems Compact power applications in industrial equipment.

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