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Mean Well LRS-350-4.2 Power Supply 350W4.2V 60A
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Mean Well LRS-350-4.2 Power Supply 350W4.2V 60A
Overview
LRS-350-4.2 is the 4.2V output model of this series: rated current 60A, rated power 252W, typical efficiency 81.5%.
LRS-350 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 3.3V, 4.2V, 5V, 12V, 15V, 24V, 36V and 48V. In addition to the high efficiency up to 89%, with the built-in long life fan LRS-350 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-350 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-350 series serves as a high price-to-performance power supply solution for various industrial applications.
Features
- AC input range selectable by switch
- Withstand 300VAC surge input for 5 second
- Protections: Short circuit / Overload / Over voltage / Over temperature
- Forced air cooling by built-in DC fan
- Built-in cooling Fan ON-OFF control
- 1U low profile
- Withstand 5G vibration test
- LED indicator for power on
- No load power consumption<0.75W
- 100% full load burn-in test
- High operating temperature up to 70℃
- Operating altitude up to 5000 meters (Note.8)
- High efficiency, long life and high reliability
- 3 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- 4.2V
- RATED CURRENT
- 60A
- CURRENT RANGE
- 0 ~ 60A
- RATED POWER
- 252W
- RIPPLE & NOISE (max.)Note.2
- 150mVp-p
- VOLTAGE ADJ. RANGE
- 3.6 ~ 4.4V
- VOLTAGE TOLERANCENote.3
- ±4.0%
- LINE REGULATIONNote.4
- ±0.5%
- LOAD REGULATIONNote.5
- ±2.5%
- SETUP, RISE TIME
- 1500ms, 50ms/230VAC 1500ms,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.)
- 81.5%
- AC CURRENT (Typ.)
- 6.8A/115VAC 3.4A/230VAC
- INRUSH CURRENT (Typ.)
- 60A/115VAC 60A/230VAC
- LEAKAGE CURRENT
- <2mA / 240VAC
PROTECTION
- OVER LOAD
- 110 ~ 140% rated output power 3.3~36V Hiccup mode, recovers automatically after fault condition is removed. 48V Shut down and latch off o/p voltage, re-power on to recover.
- OVER VOLTAGE
- 4.6 ~ 5.4V 3.3~36V Hiccup mode, recovers automatically after fault condition is removed. 48V Shut down and latch off o/p voltage, re-power on to recover.
- OVER TEMPERATURE
- 3.3~36V Hiccup mode, recovers automatically after fault condition is removed. 48V 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.9)
- SAFETY STANDARDS
- IEC/UL 62368-1,BSMI CNS15598-1,EAC TP TC 004,KC62368-1(for LRS-350-12/24 only),GB 4943.1, BIS IS13252(Part1): 2010/IEC 60950-1: 2005(NOTE 12),BS EN/EN61558-1, BS EN61558-2-16 Designed by AS/NZS 61558.1/2.16, AS/NZS 62368.1,BS EN/EN62368-1,
- 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,KS C 9832, KS C 9835(for LRS-350-12/24 only)
- EMC IMMUNITY
- Compliance to BS EN/EN55035, EAC TP TC 020,KS C 9832, KS C 9835(for LRS-350-12/24 only)
OTHERS
- MTBF
- 2099.9K hrs min. Telcordia SR-332 (Bellcore) ; 328.6Khrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 215*115*30mm (L*W*H)
- PACKING
- 0.76Kg; 15pcs/12.4Kg/0.67CUFT
Test conditions and notes12
- 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. The 150% peak load capability is built in for up to 1 second for 12~48V.LRS-350 will enter hiccup mode if the peak load is delivered for over 1 second and will recover once it resumes to the rated current level(115VAC/230VAC).
- 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. 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)
- 10. 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
- 11. RCM is on voluntary basis and meets relevant IEC or AS/NZS standards complying with AS/NZS 4417.1.
- 12. Some model may not have the BIS logo, please contact your MEAN WELL sales for more information.
Technical drawings
Typical applications
- Industrial automation machinery
- Industrial control system
- Mechanical and electrical equipment
- Electronic instruments, equipments or apparatus
Downloads
FAQ
What kind of loads is the LRS-350-4.2 best suited for at 4.2V?
The LRS-350-4.2 outputs 4.2V at up to 60A (252W) and is well-matched for powering high-current embedded logic buses in industrial or telecom equipment. Its 60A output current capability handles dense board power planes.
How does the LRS-350-4.2 differ from the LRS-350-5 and LRS-350-3.3?
All three share the same 215 × 115 × 30 mm case and 0.76 kg weight. The LRS-350-3.3 delivers 198W at 60A; the LRS-350-4.2 delivers 252W at 60A; and the LRS-350-5 delivers 300W at 60A. The higher output voltage of the LRS-350-5 translates directly to more wattage at the same 60A rated current.
Is the rated power for the LRS-350-4.2 actually 350W?
The LRS-350-4.2's rated output power is 252W (4.2V × 60A), not 350W. The '350' in the model name refers to the series wattage class, but at 4.2V the physics of the voltage × current product caps actual output at 252W.
Does the LRS-350-4.2 support operation in high-temperature industrial enclosures?
The LRS-350-4.2 is rated for -25°C to +70°C operation, with output derating required at higher ambient temperatures per the derating curve, so it can function in hot enclosures at reduced load. It is also tested to 10–500Hz, 5G vibration, suitable for machinery cabinet installations.
Can the LRS-350-4.2 power multiple loads simultaneously at 4.2V?
Yes, the supply's 60A output current can be distributed across multiple parallel 4.2V loads as long as total draw remains at or below 60A (252W). The constant-voltage operating mode holds the output at 4.2V provided total demand stays within that current ceiling.
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Other LRS-350 Models
6 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well LRS-350-12 Power Supply 350W 12V 29A | 348W | 12V | 29A | IP20 | $30.97 | View |
| Mean Well LRS-350-24 Power Supply — 350W 24V 14.6A | 350.4W | 24V | 14.6A | IP20 | $30.47 | View |
| Mean Well LRS-350-15 Power Supply 350W 15V 23.2A | 348W | 15V | 23.2A | IP20 | $21.00 | View |
| Mean Well LRS-350-5 Power Supply 350W 5V 60A | 300W | 5V | 60A | IP20 | $37.04 | View |
| Mean Well LRS-350-36 Power Supply 350W 36V 9.7A | 349.2W | 36V | 9.7A | IP20 | $31.30 | View |
| Mean Well LRS-350-48 Power Supply 350W 48V 7.3A | 350.4W | 48V | 7.3A | IP20 | $37.12 | View |
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