MEAN WELL Enclosed Power Supply LRS-350N2 Series Single-Output High Peak

Product Item : LRS-350N2 series
Category：Enclosed Type
Wattage: 350W
Input Voltage: 90 ~ 132VAC/180 ~ 264VAC by switch 240 ~ 370VDC(switch on 230VAC)
Output Current: 0 ~ 29A
Output Voltage: 12 ~ 48V
Product description：LRS-350N2 series is a 350W single-output enclosed type power supply with 30mm of low profile design.
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LRS-350N2 Series - 350W Single-Output High Peak Power Supply

✓ In Stock 3-Year Warranty 200% Peak Power Active Cooling RoHS Compliant

				Key Performance at a Glance
			
						350W
					
						Rated Power
					
						200%
					
						Peak Power (700W)
					
						89%
					
						Max Efficiency
					
						29A
					
						Max Output Current
					
						-20~70C
					
						Operating Temp Range
					
						5G
					
						Vibration Resistance

Product Overview

The LRS-350N2 series is MEAN WELL's 350W single-output enclosed industrial power supply with 200% peak power capability. Featuring a 30mm low-profile design, switchable 115/230VAC input, and built-in DC fan with intelligent on/off control, it delivers high power density in a compact 215x115x30mm form factor - ideal for motor-driven loads, industrial automation, and applications demanding sustained high output.

The LRS-350N2 uses a switchable 90~132VAC / 180~264VAC input (selected via built-in switch), and also supports 240~370VDC input. Available in four output voltages - 12V, 24V, 36V, and 48V - it delivers up to 29A at 12V and 7.3A at 48V, covering a wide range of high-power industrial requirements.

Measuring 215x115x30mm, the LRS-350N2 packs 350W into the same slim footprint as lower-wattage LRS models. Unlike its fanless siblings, it incorporates a built-in DC fan with intelligent on/off control: the fan activates when the internal heatsink temperature (RTH3) reaches 50C and turns off when it drops below 40C. This active cooling enables full-load operation across a -20C to +70C ambient range - a critical advantage for sealed control cabinets and high-temperature industrial settings.

The defining advantage is the 200% peak power output (up to 700W). When starting motors, solenoids, relays, or other inductive/capacitive loads, the unit delivers double its rated wattage momentarily - essential for CNC machining centers, large packaging machinery, conveyor systems, and any application with high-inrush start/stop cycles where a 200W or 100W supply simply cannot meet demand.

The LRS-350N2 holds IEC/UL62368-1, BS EN/EN61558-1/-2-16, GB4943.1 (CQC), and BSMI CNS15598-1 certifications, with design reference to BS/EN/EN62368-1, AS/NZS 61558.1/2.16, and AS/NZS 62368.1. Note: This model is not compliant with EN61000-3-2 harmonic current requirements for certain EU applications. Consider the LRS-350N3 series for full EU compliance.

Product Images

Technical Specifications

Parameter	LRS-350N2-12	LRS-350N2-24	LRS-350N2-36	LRS-350N2-48
DC Output Voltage	12V	24V	36V	48V
Rated Current	29A	14.6A	9.7A	7.3A
Rated Power	348W	350.4W	349.2W	350.4W
Ripple & Noise (max)	150mVp-p	150mVp-p	200mVp-p	200mVp-p
Voltage Adjustment Range	10.2~13.8V	21.6~28.8V	32.4~39.6V	43.2~52.8V
Voltage Accuracy	+/-1.5%	+/-1.0%	+/-1.0%	+/-1.0%
Line Regulation	+/-0.5%	+/-0.5%	+/-0.5%	+/-0.5%
Load Regulation	+/-1.0%	+/-0.5%	+/-0.5%	+/-0.5%
Efficiency (Typ.)	85%	88%	88.5%	89%

Input Specifications (All Models)

Input Voltage Range	90~132VAC / 180~264VAC (switch-selectable); 240~370VDC (switch at 230VAC)
Input Surge Immunity	Withstands 300VAC surge for 5 seconds
Frequency Range	47~63Hz
AC Current (Typ.)	6.8A / 115VAC \| 3.8A / 230VAC
Inrush Current (Typ.)	60A / 115VAC \| 60A / 230VAC (cold start)
Leakage Current	< 2mA / 240VAC

Protection Features & Environmental Ratings

Overload Protection	>105% rated power for >5 sec -> output shutdown, auto-recovery; >200% -> hiccup mode, auto-recovery
Overvoltage Protection	12V: 13.8~16.2V / 24V: 28.3~33.6V / 36V: 41.4~46.8V / 48V: 55.2~64.8V (shutdown output, auto-recovery)
Over-temperature Protection	Shutdown output, auto-recovery after temperature drops to safe level
Short Circuit Protection	Hiccup mode, auto-recovery after fault removal
Fan On/Off Control	RTH3 >= 50C fan on, <= 40C fan off (intelligent thermal management)
Operating Temperature	-20~+70C (refer to derating curve)
Operating Humidity	20~90% RH, non-condensing
Storage Temp / Humidity	-40~+85C, 10~95% RH
Temperature Coefficient	+/-0.03%/C (0 ~ 50C)
Vibration Resistance	10~500Hz, 5G, 10 min/cycle, 60 min each for X, Y, Z axes
Overvoltage Category	OVC III (EN61558, EN50178, EN60664-1, EN62477-1; up to 2,000m)
MTBF	>= 1,857.9K hrs (Telcordia SR-332); >= 226.2K hrs (MIL-HDBK-217F, 25C)
Dimensions	215 x 115 x 30 mm (LxWxH)
Net Weight / Packaging	0.76 kg / 15 pcs per carton / 12.4 kg / 0.67 CUFT

Safety Standards & Certifications

Safety Standards	IEC/UL62368-1, BS EN/EN61558-1, BS EN61558-2-16 CQC: GB4943.1 \| BSMI: CNS15598-1 \| EAC: TP TC 004 BIS: IS 13252(Part1):2010 / IEC60950-1:2005 (except 48V) Design refers to: BS/EN/EN62368-1, AS/NZS 61558.1/2.16, AS/NZS 62368.1
Withstand Voltage	I/P-O/P: 3.75KVAC \| I/P-FG: 2KVAC \| O/P-FG: 0.5KVAC
Insulation Resistance	I/P-O/P, I/P-FG, O/P-FG: > 100Mohm / 500VDC / 25C / 70% RH
EMC Emissions	BSMI CNS15936, EAC TP TC 020 Note: Not compliant with EN61000-3-2 harmonic current limits. See FAQ for EU usage restrictions.
EMC Immunity	BS EN/EN55035, EAC TP TC 020

Key Features

200% Peak Power (700W)
Delivers up to 700W momentarily to start motors, solenoids, and capacitive loads - 3.5x more peak than a 200W supply

Intelligent Fan Control
Built-in DC fan activates at 50C and turns off at 40C - keeps the unit cool under full load while minimizing noise and wear

350W in 30mm Slim Profile
215x115x30mm delivers 350W - the highest power density in the LRS N2 family for space-constrained 1U installations

-20~70C Wide Temperature
Active cooling enables full-load operation from sub-freezing to extreme heat - outperforms fanless models in high-temp environments

300VAC Surge Immunity
Withstands input surges up to 300VAC for 5 seconds - critical for unstable grid conditions and industrial generator power

Over-temperature Protection
Built-in thermal protection automatically shuts down if safe limits are exceeded - prevents heat damage and extends service life

Switchable AC Input
90~132VAC / 180~264VAC via built-in selector switch; also accepts 240~370VDC for battery-backed systems

<0.75W No-Load Consumption
Ultra-low standby power meets international energy-efficiency standards; minimizes operating costs in always-on systems

Comprehensive Protection
Short-circuit, overload, overvoltage, and over-temperature protection with automatic recovery - minimal downtime

5G Vibration Resistance
Tested to withstand 10~500Hz at 5G across all three axes - built for demanding industrial and mobile installations

Frequently Asked Questions

Does the LRS-350N2 always run its internal fan?

No. The LRS-350N2 features intelligent fan on/off control based on internal heatsink temperature (RTH3). The fan activates only when RTH3 reaches 50C and turns off when it drops below 40C. Under light loads or in cool environments, the fan may remain off entirely - reducing noise, power consumption, and fan wear while the unit operates in near-silent passive cooling mode.

How does the LRS-350N2 differ from the LRS-200N2?

The LRS-350N2 delivers 350W vs 200W - a 75% power increase in the same 215x115x30mm footprint. Key differences: (1) active cooling with a built-in DC fan vs fanless convection, enabling full-load operation at 70C ambient; (2) higher currents across all voltages (29A vs 17A at 12V); (3) slightly narrower minimum temperature (-20C vs -25C); (4) lower MTBF due to active components. Choose the LRS-200N2 for fanless silence and higher reliability; choose the LRS-350N2 when you need 350W output or sustained high-temperature operation.

Can the LRS-350N2 be used in EU countries?

The LRS-350N2 is not compliant with EN61000-3-2 harmonic current limits. It should NOT be used in end equipment meeting ALL of these conditions: (a) used within the EU, (b) connected to 220VAC+ public mains, (c) installed in equipment with average input power >75W, and (d) part of a lighting system. Professional equipment rated >1,000W and symmetrically controlled heating elements <=200W are exempt. For EU applications within these restrictions, consider the LRS-350N3 series instead.

Is the 48V model BIS-certified for India?

The 48V model is not currently covered under the BIS (IS 13252) certification. The 12V, 24V, and 36V models are BIS-certified and should be selected for shipments to India.

How do I set the correct input voltage on the LRS-350N2?

The LRS-350N2 uses a built-in selector switch to choose between 115VAC (90~132VAC) and 230VAC (180~264VAC) input ranges. Always verify the switch position matches your local mains voltage before powering on. Incorrect setting may cause damage. For DC input (240~370VDC), set the switch to the 230VAC position.

Related Products

Select the LRS-350N2 model that matches your voltage requirement. All models share the same 200% peak power capability, intelligent fan control, and 30mm slim profile.