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Mean Well LRS-350N2-12 Single Output High Peak Power Supply 348W 12V, 2 Times Peak Power 29A

Name: Mean Well LRS-350N2-12 Single Output High Peak Power Supply 348W 12V, 2 Times Peak Power 29A
Brand: Mean Well
SKU: LRS-350N2-12
Price: 74.27 USD
Availability: InStock

most economical modelwithstand 5G vibration and 70°C operationup to 200% peak power capability

SKU LRS-350N2-12

$74.27 USD

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Overview

LRS-350N2-12 is the 12V output model of this series: rated current 29A, rated power 348W, typical efficiency 85%.

LRS-350N2 series is a 350W single-output enclosed type power supply with 30mm of low profile design. Adopting the input of 115VAC or 230VAC (select by switch), the entire series provides an output voltage line of 12V, 24V, 36V and 48V. In addition to the high efficiency up to 89%, with the built-in long life fan LRS-350N2 can work under -25~+70℃ with full load. Delivering an extremely low no load power consumption (less than 0.75W), it allows the end system to easily meet the worldwide energy requirement. LRS-350N2 has the complete protection functions and 5G anti-vibration capability; it is complied with the international safety regulations such as IEC/UL 62368-1. LRS-350N2 series serves as a high price-to-performance power supply solution for various industrial applications. Moreover, LRS-350N2 can provide 200% short-duration peak power for motor applications and electro mechanical loads requiring much higher power during start-up.

Features

AC input range selectable by switch
Withstand 300VAC surge input for 5 second
Up to 200% peak power capability
Protections: Short circuit / Overload / Over voltage / Over temperature
Forced air cooling by built-in DC fan
Built-in cooling Fan ON-OFF control
Compliance to IEC/BS EN/EN61558-1 and 62368-1
Withstand 5G vibration test
LED indicator for power on
No load power consumption<1W
Over voltage category Ⅲ(OVC Ⅲ)
High operating temperature up to 70℃
Operating altitude up to 2000 meters
High efficiency, long life and high reliability
3 years warranty

Specifications

LRS-350N2-12Specifications from the official datasheet (2025-09-12 edition)

OUTPUT

DC VOLTAGE: 12V
RATED CURRENT: 29A
CURRENT RANGE: 0 ~ 29A
RATED POWER: 348W
RIPPLE & NOISE (max.)^Note.2: 150mVp-p
VOLTAGE ADJ. RANGE: 10.2 ~ 13.8V
VOLTAGE TOLERANCE: ±1.5%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME: 1300ms, 50ms/230VAC 1300ms,50ms/115VAC at full load
HOLD UP TIME (Typ.): 16ms/230VAC 12ms/115VAC at full load

INPUT

VOLTAGE RANGE: 90 ~ 132VAC / 180 ~ 264VAC by switch 240 ~ 370VDC (switch on 230VAC)
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY (Typ.): 85%
AC CURRENT (Typ.): 6.8A/115VAC 3.8A/230VAC
INRUSH CURRENT (Typ.): 60A/115VAC 60A/230VAC
LEAKAGE CURRENT: <2mA / 240VAC

PROTECTION

OVER LOAD: Output power >105% rated for more than 5 seconds then shut down o/p voltage, re-power on to recover Output power >200% rated, hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 13.8 ~ 16.2V Shut down and latch off o/p voltage, re-power on to recover.
OVER TEMPERATURE: Shut down and latch off o/p voltage, re-power on to recover.

FUNCTION (Typ.)

FAN ON/OFF CONTROL: RTH3≧50℃ FAN ON, ≦40℃ FAN OFF

ENVIRONMENT

WORKING TEMP.: -25 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes
OVER VOLTAGE CATEGORY: Ⅲ: According to EN61558, EN50178, EN60664-1, EN62477-1; altitude up to 2000 meters

SAFETY & EMC (Note.4)

SAFETY STANDARDS: IEC/UL 62368-1, BSMI CNS15598-1,EAC TP TC 004,BIS IS13252(Part1): 2010/IEC 60950-1: 2005(except for 48V); GB 4943.1, BS EN/EN61558-1, BS EN61558-2-16 Designed by 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
ISOLATION RESISTANCE: I/P-O/P, I/P-FG, O/P-FG:100M Ohms/500VDC / 25℃/ 70% RH
EMC EMISSION: Compliance to BSMI CNS15936, EAC TP TC 020
EMC IMMUNITY: Compliance to BS EN/EN55035, EAC TP TC 020

OTHERS

MTBF: 1857.9K hrs min. Telcordia SR-332 (Bellcore) ; 226.2Khrs min. MIL-HDBK-217F (25℃)
DIMENSION: 215*115*30mm (L*W*H)
PACKING: 0.76Kg; 15pcs/12.4Kg/0.67CUFT

Test conditions and notes6

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. 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.
4. 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. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf)
5. This power supply does not meet the harmonic current requirements outlined by BS EN/EN61000-3-2. Please do not use this power supply under the following conditions: a) the end-devices is used within the European Union, and b) the end-devices is connected to public mains supply with 220Vac or greater rated nominal voltage, and c) the power supply is: - installed in end-devices with average or continuous input power greater than 75W, or - belong to part of a lighting system Exception: Power supplies used within the following end-devices do not need to fulfill BS EN/EN61000-3-2 a) professional equipment with a total rated input power greater than 1000W; b) symmetrically controlled heating elements with a rated power less than or equal to 200W
6. RCM is on voluntary basis and meets relevant IEC or AS/NZS standards complying with AS/NZS 4417.1

Technical drawings

LRS-350N2-12 Block Diagram — Block Diagram

LRS-350N2-12 Derating Curve — Derating Curve

LRS-350N2-12 Function Manual — Function Manual

LRS-350N2-12 PeakPower/RatedPower — PeakPower/RatedPower

LRS-350N2-12 Mechanical Specification — Mechanical Specification

Typical applications

Industrial automation machinery
Industrial control system
Mechanical and electrical equipment
Electronic instruments, equipments or apparatus
For inductive and capacitive load

Downloads

Datasheet1

LRS-350N2-12 datasheetLRS_350N2_spec_sheet.pdf · 2025-09-12 edition PDF Download

FAQ

What does the '2 Times Peak Power' feature on the LRS-350N2-12 mean in practice?

The LRS-350N2-12 supports up to 200% of its rated 348W output (roughly 696W) for up to 5 seconds at a time, with 200–264VAC input, a peak duty cycle of at most 35% and average power not exceeding the rating. This handles motor start-up inrush or other surge loads without tripping overload protection; the available peak is lower at 100–132VAC input.

Is the LRS-350N2-12 appropriate for powering DC motor drives or servo systems?

Yes. The 12V, 29A output combined with 200% peak power capability makes the LRS-350N2-12 well-suited for DC motor controllers and servo amplifiers that demand high inrush current at startup while running at lower continuous loads. It operates from -25°C to +70°C with derating at higher ambient temperatures, covering typical industrial enclosure conditions.

How does the LRS-350N2-12 compare to the other LRS-350N2 voltage variants?

All LRS-350N2 models share the same 215 × 115 × 30 mm case, 0.76 kg weight, and 200% peak power feature. Output specs by voltage: LRS-350N2-12 (348W, 12V, 29A), LRS-350N2-24 (350.4W, 24V, 14.6A), LRS-350N2-36 (349.2W, 36V, 9.7A), LRS-350N2-48 (350.4W, 48V, 7.3A). Choose by the DC bus voltage required by the target system.

Can the LRS-350N2-12 be installed in enclosures reaching 70°C ambient?

Yes, at reduced load: the LRS-350N2-12 is rated for -25°C to +70°C operating temperature, but output must be derated at higher ambient temperatures per the derating curve. It withstands 5G vibration and is a fan-cooled, cased unit that must be installed in a protective enclosure to shield it from dust, moisture (rated 20–90% RH non-condensing), or contaminants.

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