Mean Well Power Supply Direct Sales/Semi-Potted Weatherproof Power Supply Manufacturer

• Author：David
• Release time：2025-11-24
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Key Precautions for Mean Well 350W Weatherproof Power Supply

• Installation Orientation: Must be strictly installed according to the direction marked on the housing (e.g., with the "↑" arrow pointing upwards) to ensure effective dissipation of internal heat and moisture, preventing accumulation.

• Waterproofing Connections: Although the power supply unit itself is weatherproof, the input/output cable connections must be sealed using waterproof connectors or potting compound to ensure the connection points achieve the same protection level.

• Adequate Ventilation: Ensure sufficient space around the power supply for heat dissipation. Avoid placing it in enclosed spaces or close to other heat sources to prevent overheating, which can impact lifespan and performance.

• Load Matching: Do not overload. It is recommended to reserve 10%-20% power headroom. Verify that the lamp's voltage and current requirements match the power supply's output parameters.

• Surge Protection: In areas prone to lightning strikes, it is advisable to install additional surge protective devices (SPDs) on the power supply circuit to enhance system reliability.

Summary: This power supply is ideal for high-standard outdoor lighting. The keys to its stability lie in correct installation, proper sealing, and effective heat dissipation. Always consult the official Mean Well datasheet for the specific model before installation.

MEAN WELL

350W Single Output Switching Power Supply

ERP-350series

SPECIFICATION

MODELERP-350-12ERP-350-24ERP-350-36ERP-350-48DC VOLTAGE12V24V36V48VRATED CURRENT26.7A14.6A9.7A7.3ACURRENT RANGE0~26.7A0~14.6A0~9.7A0~7.3ARATED POWER320.4W350.4W349.2W350.4WRIPPLE&NOISE(max.)Note.2150mVp-p150mVp-p240mVp-p240mVp-pOUTPUTVOLTAGE ADJ.RANGE10.8~13.2V21.6~26.4V32.4~39.6V43.2~52.8VVOLTAGE TOLERANCE Note.3±1.0%±1.0%±1.0%±1.0%LINE REGULATION±0.5%±0.5%±0.5%±0.5%LOAD REGULATION±0.5%±0.5%±0.5%±0.5%SETUP,RISE TIME1500ms,200ms/230VACHOLDUPTIME (Typ.)20ms/230VACVOLTAGE RANGE180~264VAC254~370VDCFREQUENCY RANGE47～63HINPUTEFFICIENCY (Typ.)87%89%90%90%AC CURRENT(Typ.)4A/230VACINRUSH CURRENT (Typ.)90A/230VACLEAKAGE CURRENT<1mA/240VAC110~140%rated output power 130~180%rated output power120~160%rated output powerOVERLOAD12-36VHiccup mode,reoovers automatically after fault condition is removed48V Shut downand latch offo/p voltage,re-power on to reoover13.8~16.2V27.6~32.4V41.4~46.8V55.2~64.8VPROTECTIONOVER VOLTAGE12-36V Hocup mode,recovers automaticaly after fault oondition is removed48V Shut down and latch off olp voltage,re-power on to recoverOVERTEMPERATURE12-36V Shut down O/P voltage,recovers automatically after temperature goes down48VShut down and latchoffo/p voltage,re-power on to reooverWORKING TEMP.-30~+60℃(Refer to output load derating courve)WORKING HUMIDITY20~90%RHnon-condensingEMVIRONMENTSTORAGE TEMP.,HUMIDITY-30~+85℃,10~95%RHTEMP.COEFFICIENT±0.05%/C(0~50℃)VIBRATION10~500Hz,3G 10min./1cyde,60min.each alongX,Y,Z axesSAFETY STANDARDSUL62368-1,IEC 62368-1,GB 4943.1,EACTPTC004 approvedSAFETY&WITHSTAND VOLTAGEIVP-O/P:3KVAC VP-FG:2KVAC O/P-FG:0.5KVACEMCISOLATION RESISTANCEIVP-O/P,VP-FG,O/P-FG:100M Ohms/500VDC/25C170%RHEMC EMISSIONRefer to EN55022(CISPR22)classA,EACTPTC020EMC IMMUNITYRefer to EN61000-45;ightindustry level,EAC TPTC020MTBF2396.7Khrsmin.Telcordia SR-332(Bellcore)321Khrs min.MIL-HDBK-217F(25℃)OTHERSDIMENSION220.4*130*48mm (L'W^H)PACKING0.9Kg;9pes/11Kg/0.63CUFTNOTE1.All parameters NOT specially mentioned are measured at 230VAC input,ratedload and 25℃ of ambient temperature.2.Ripple &noise are measuredat 20MHz of bandwidth by using a 12*twisted pair-wire terminated with a0.1uf &47uf parallel capacitor.3.Tolerance:includes set uptolerance,line regulation and load regulation.4.The ambient temperature derating of 3.5℃/1000m with fanless models and of5℃/1000m with fan models for operating atitudehigher than 2000m(6500f).※ Product Liability Disclaimer :For detailed information,please refer to https:/www.meanwell.com/serviceDisclaimer.aspx