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Top Choice 12V 400W Outdoor power supply - Reliability & Value for LED Ads
Feature
◎ Market-Leading Choice: Proven bestseller balancing exceptional value and dependable reliability, widely adopted in key international markets.
◎ Optimized 400W LED Power: Delivers a strong 33.3A at 12V DC, perfectly suited for powering common outdoor LED advertising displays and lighting.
◎ Superior Verified Reliability: Features Aihua capacitors, 100% new components, and rigorous 2-hour full-load burn-in testing (<0.1% failure rate).
◎ Practical Rainproof Housing: Weather-resistant enclosure designed for outdoor use, often featuring user-friendly sliding or flip covers for secure access.
◎ Full Protection & 2-Year Warranty: Equipped with Overload, Over-voltage, and Short Circuit Protection, backed by a confident 2-year manufacturer warranty.
specification
| Model | MJ-400W 12V-F | MJ-400W 12V-C | MJ-400W 12V-A | |
| OUTPUT | DC voltage | 12V | 12V | 12V |
| Rated current | 30A | 33.3A | 33.3A | |
| Cuttent range | 0-33A | 0-33.3A | 0-33.3A | |
| Rated output power | 400W | 400W | 400W | |
| Ripples and noise | ≤200mVp-p | ≤200mVp-p | ≤200mVp-p | |
| Output current range | 11.5-12.5V | 11.5-12.5V | 11.5-12.5V | |
| Precision of output voltage regulation | ±0.5% | ±0.5% | ±0.5% | |
| Rate of lenear adjustment | ±0.5% | ±0.5% | ±0.5% | |
| Load adjustment rate | ±0.5% | ±0.5% | ±0.5% | |
| The startup time | ≤2s/230VAC | |||
| INPUT | Keep time | 10ms/230VAC | ||
| Voltage range | 176-264VAC | |||
| Frequency range | 50Hz | |||
| Power factor | PF≥0.6/230VAC | |||
| Efficiency | ≥80% | 85% | ≥91% | |
| Alternating current | 3.4A/230VAC | |||
| Surge current | 50A/230VAC | |||
| Leakage current | <5mA/230VAC | |||
| PROTECTION | Overload | 110%-140%: rated 110%-140% of the total power input | ||
| protection mode:Auto recovery mode.the system automatically recovers when abnormal load conditions are removed | ||||
| Short circuit | protection mode:Auto recovery mode.the system automatically recovers when abnormal load conditions are removed | |||
| Over voltage | protection mode:self-recovery mode,automatic recovery when the overvoltage is removed | |||
| Over temperature | protection mode:self-recovery mode,automatically recover when the temperature drops | |||
| ENVIRONMEN | working temperature | -35~+50°C | ||
| working humidity | 20-90% RH | |||
| storage temperature;humidity | -30~+85°C； 10~95% RH | |||
| temperature coefficient | ±0.1%/°C(0-35°C) | |||
| resistance to vibration | 10-500Hz, 3G 10min. / 1 cycle, 60 min. each axes | |||
| SAFETY&EMC | safety norms | EN60950 , GB4943.1 -2011 | ||
| withstand voltage | l/P-O/P:1.5KVAC l/P-FG:1.5KVAC O/P-FG:0.5KVAC | |||
| insulation impedance | l/P-O/P, l/P-FG, 0/P-FG:100M Ohms / 500VDC / 25°C/ 70% RH | |||
| EMC | -- | |||
| other | protection grade | IP62 | ||
| MTBF | ≥30khour 25℃ | |||
| power supply size | L182*W120*H56mm | |||
| power supply weight | 480g | |||
| NOTE | 1.Unless otherwise specified , all specification are measured at an input of 230VAC,rarted negative cut,and ambient temperature of 25°C | |||
| 2.Ripple and noise measurement method:the measured end is connected in parallel with a 0.1uF+10uF capacitor,the oscilloscope is set to 20MHZ bandwidth,and the probe is tested with cap off and full load at 25°C | ||||
| 3.Accuracy :includes setting error , linear adjustment rate and load adjustment rate . | ||||
| 4. The output power is reduced when the input voltage is less than 200VAC. | ||||
Caution
● The product MUST be installed vertically and the wiring terminals downwards.
● For the heat dissipation, distance of 10cm from 4 sides (up/down/right/left) and 5cm from the ventilation hole side should be kept.
OEM Customer design
Model List
Our factory offers OEM customization, allowing us to tailor various models and parameters to meet your specific needs. Feel free to contact us for more information and personalized solutions.
| Model | Power Out | Input Voltage | Output Voltage | Output Current | Efficiency | IP | Size(mm) | Package |
| MJ-60W 12V | 60W | 200-240V AC | 12V | 5.0A | 93% | IP62 | 130*76*42 | 100 |
| MJ-100W 12V | 100W | 200-240V AC | 12V | 8.3A | 93% | IP62 | 148*76*42 | 100 |
| MJ-150W 12V | 150W | 200-240V AC | 12V | 12.5A | 93% | IP62 | 148*76*42 | 100 |
| MJ-200W 12V | 200W | 200-240V AC | 12V | 16.7A | 92% | IP62 | 195*76*42 | 80 |
| MJ-300W 12V | 300W | 200-240V AC | 12V | 25.0A | 92% | IP62 | 182*100*50 | 50 |
| MJ-400W 12V F | 400W | 200-240V AC | 12V | 33.3A | 80% | IP62 | 182*120*56 | 40 |
| MJ-400W 12V C | 400W | 200-240V AC | 12V | 33.3A | 92% | IP62 | 182*120*56 | 40 |
| MJ-400W 12V A | 400W | 200-240V AC | 12V | 33.3A | 92% | IP62 | 205*120*56 | 30 |
| MJ-500W 12V | 500W | 200-240V AC | 12V | 41.7A | 90% | IP62 | 205*120*56 | 30 |
| MJ-600W 12V | 600W | 200-240V AC | 12V | 50.0A | 90% | IP62 | 205*120*56 | 30 |
| MJ-700W 12V | 700W | 200-240V AC | 12V | 58.3A | 90% | IP62 | 220*120*56 | 30 |
| MJ-1000W 12V | 1000W | 200-240V AC | 12V | 83.3A | 90% | IP62 | 220*120*56 | 30 |
| MJ-400W 24V | 400W | 200-240V AC | 24V | 16.7A | 93% | IP62 | 182*120*56 | 40 |
| MJ-700W 24V | 700W | 200-240V AC | 24V | 29.1A | 91% | IP62 | 220*120*56 | 30 |
| MJ-200W 5V | 200W | 200-240V AC | 5V | 40.0A | 92% | IP62 | 182*120*56 | 40 |
| MJ-300W 5V | 300W | 200-240V AC | 5V | 60.0A | 92% | IP62 | 182*120*56 | 40 |
| MJ-350W 5V | 350W | 200-240V AC | 5V | 70.0A | 90% | IP62 | 205*120*56 | 30 |
| MJ-400W 5V | 400W | 200-240V AC | 5V | 80.0A | 90% | IP62 | 205*120*56 | 30 |
| MJ-500W 5V | 500W | 200-240V AC | 5V | 100.0A | 89% | IP62 | 220*120*56 | 30 |
application
Recognized as the Top Choice by countless professionals, this 12V 400W Outdoor Power Supply is the definitive workhorse for a vast range of mainstream outdoor LED advertising and illumination projects. It’s perfectly balanced features, proven reliability, and strong 33.3A output make it ideal for:
Standard Outdoor Signage: Reliably powering the majority of illuminated business signs, channel letters, and medium-sized light boxes found in commercial and retail environments.
Architectural & Accent Lighting: Driving significant runs of outdoor-rated LED strips used for outlining buildings, highlighting features, or creating ambient landscape lighting that requires consistent, long-term performance.
Professional LED Installations: Favored by installers in demanding markets (like India, Vietnam, UAE, etc.) for its dependability, ease of installation thanks to cover designs, and the assurance of a 2-year warranty, minimizing costly callbacks.
High-Visibility Retail Displays: Ensuring vibrant and continuous illumination for exterior promotional displays or window advertising aiming to capture customer attention day and night.
Its combination of robust power, comprehensive protections, and verified low failure rate provides the confidence needed for installations where consistent operation and visual appeal are paramount. It represents the smart, reliable standard for powering impactful outdoor LED visuals effectively and affordably.
