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Premium Engineered 12V 400W Rainproof Power Supply - Full 400W for Critical Projects
Feature
◎ Guaranteed 100% Full 400W Output: Delivers a true, continuous 33.3 Amps at 12V DC, engineered for demanding loads in critical infrastructure projects.
◎ Superior Internal Components: Utilizes premium elements like a double-forward topology, all-copper transformer & magnetic rings, thickened PCB, ensuring exceptional performance and longevity.
◎ Enhanced Durability (Hydraulic Fan): Incorporates a long-life, high-speed hydraulic bearing fan for superior cooling and extended operational lifespan compared to standard fans.
◎ Certified & Clean Power: Holds CE, BIS, CCC certifications and features advanced EMI filtering, meeting high standards for safety and preventing electrical interference.
◎ Proven in High-Profile Venues: Successfully deployed in demanding locations like Dubai Mall, Beijing Daxing Airport, and Shanghai Disneyland, backed by a 2-year warranty.
specification
| Model | MJ-400W 12V | MJ-400W 24V | |
| OUTPUT | DC voltage | 12V | 24V |
| Rated current | 33.3A | 16.7A | |
| Cuttent range | 0-33.3A | 0-16.7A | |
| Rated output power | 400W | 400W | |
| Ripples and noise | ≤200mVp-p | ≤300mVp-p | |
| Output current range | 11.5-12.5V | 23-25V | |
| Precision of output voltage regulation | ±0.5% | ±0.5% | |
| Rate of lenear adjustment | ±0.5% | ±0.5% | |
| Load adjustment rate | ±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 | ≥89% | ≥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 | L205*W120*H56mm | ||
| power supply weight | 510g | ||
| 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
This Premium Engineered 12V 400W Rainproof Power Supply is specifically designed for mission-critical and high-specification projects where reliability, certified performance, and guaranteed full power are non-negotiable. Its superior build quality and robust components make it the ideal choice for:
Major Infrastructure Projects: Powering essential LED lighting, signage, or control systems in demanding environments like road and bridge installations, tunnels, and public transportation hubs where maintenance access is difficult and longevity is key.
Airports & Transportation Centers: Suitable for large-scale LED displays, wayfinding signage, and safety lighting within airports (like Beijing Daxing), train stations, and other high-traffic facilities operating 24/7.
Hospitals & Healthcare Facilities: Providing reliable, interference-free power for critical signage, architectural lighting, or specialized equipment within hospitals where electrical noise and operational continuity are vital concerns.
Premium Retail & Commercial Spaces: Energizing high-impact LED advertising displays, sophisticated architectural lighting, and large-scale installations in upscale shopping malls (like Dubai Mall), flagship stores, and prestigious corporate buildings.
Theme Parks & Entertainment Venues: Powering dynamic lighting effects, large displays, and essential operational signage in demanding environments like theme parks (like Shanghai Disneyland) where performance and safety are paramount.
This power supply is explicitly intended for applications where standard units fall short and where the long-term value of unwavering reliability and certified compliance outweighs initial cost considerations, ensuring truly worry-free, high-performance operation in the most demanding settings.
