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Cost-Effective 400W 12V Outdoor Power Supply - Rainproof 33.3 Amp

Unlock incredible value with our Economy 12V 400W Rainproof Power Supply, engineered in China to be one of the most affordable high-wattage outdoor solutions on the market. This unit is specifically designed for maximum cost-efficiency, making it a massively popular choice in price-sensitive markets like India, Bangladesh, Vietnam, and Egypt. Trusted by major clients such as JBN and BRM, its unbeatable price point, starting as low as RMB 15, makes large-scale projects feasible.

Despite its aggressive pricing, quality is maintained using 100% brand-new electronic components, and it features comprehensive protection functions for safe operation. Perfectly capable of driving up to 400W of 12V LED strips or modules, it's the ideal power source for budget-conscious advertising or illumination projects. We offer exceptional flexibility with options for different casing designs, custom logo printing, and tailored packaging, backed by a 1-year warranty. This makes it an unbeatable option for applications like seasonal holiday lighting installations where cost is paramount. Get essential 400W outdoor power without breaking the bank.

Model Number MJ-400-12RP-F
Input voltage 200-240V
Output voltage 12V DC
Output Power 400W
Size 182*120*56mm
Warranty 1 years
OEM Customize LOGO, color box, and Carton
Protection Over voltage, over current, short protection

description

model list

application

Feature

◎ Extreme Cost-Effectiveness: Designed as one of the most affordable 400W outdoor power solutions, perfect for budget-driven projects and price-sensitive markets like India, Bangladesh Egypt etc.

◎ Substantial 400W Capacity: Delivers a high 33.3 Amps at 12V DC, capable of powering extensive LED strip lengths or a large number of modules.

◎ Fully Customizable for Bulk Orders: Offers options for different casing styles, custom logo printing, and tailored packaging to meet large volume requirements trusted by JBN, BRM.

◎ Comprehensive Safety Protections: Includes built-in Over Current, Over Voltage, and Short Circuit protection, safeguarding the unit and connected load.

◎ Ideal for Seasonal & Budget Installs: Includes basic safety protections and a 1-year warranty, making it a highly practical choice for temporary holiday lighting or cost-critical applications.

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	L182W120H56mm
		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

010203

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	1307642	100
MJ-100W 12V	100W	200-240V AC	12V	8.3A	93%	IP62	1487642	100
MJ-150W 12V	150W	200-240V AC	12V	12.5A	93%	IP62	1487642	100
MJ-200W 12V	200W	200-240V AC	12V	16.7A	92%	IP62	1957642	80
MJ-300W 12V	300W	200-240V AC	12V	25.0A	92%	IP62	18210050	50
MJ-400W 12V F	400W	200-240V AC	12V	33.3A	80%	IP62	18212056	40
MJ-400W 12V C	400W	200-240V AC	12V	33.3A	92%	IP62	18212056	40
MJ-400W 12V A	400W	200-240V AC	12V	33.3A	92%	IP62	20512056	30
MJ-500W 12V	500W	200-240V AC	12V	41.7A	90%	IP62	20512056	30
MJ-600W 12V	600W	200-240V AC	12V	50.0A	90%	IP62	20512056	30
MJ-700W 12V	700W	200-240V AC	12V	58.3A	90%	IP62	22012056	30
MJ-1000W 12V	1000W	200-240V AC	12V	83.3A	90%	IP62	22012056	30
MJ-400W 24V	400W	200-240V AC	24V	16.7A	93%	IP62	18212056	40
MJ-700W 24V	700W	200-240V AC	24V	29.1A	91%	IP62	22012056	30
MJ-200W 5V	200W	200-240V AC	5V	40.0A	92%	IP62	18212056	40
MJ-300W 5V	300W	200-240V AC	5V	60.0A	92%	IP62	18212056	40
MJ-350W 5V	350W	200-240V AC	5V	70.0A	90%	IP62	20512056	30
MJ-400W 5V	400W	200-240V AC	5V	80.0A	90%	IP62	20512056	30
MJ-500W 5V	500W	200-240V AC	5V	100.0A	89%	IP62	22012056	30

application

This Economy 12V 400W Rainproof power supply is purpose-built for scenarios where maximum cost-efficiency is the absolute priority, making it the undisputed champion for temporary, large-scale decorative lighting projects, especially seasonal holiday installations. Its primary application lies in powering:

Festival & Holiday Lighting: Perfect for bringing festive displays to life during celebrations like Diwali in India, Halloween, Christmas, Eid, or other local festivals where extensive lighting is deployed for a limited duration and then removed. The ultra-low price point aligns perfectly with the temporary nature of these installations.

Budget-Focused Event Illumination: Ideal for short-term events, parties, or promotional setups requiring significant lengths of basic 12V LED strips, modules, or simple neon-style lighting to be powered affordably.

High-Volume, Low-Cost Manufacturing: An excellent choice for factories or installers focused purely on illuminating basic LED strips, modules, or neon tubes for projects where the primary goal is simply "getting the lights on" at the lowest possible cost, without needing premium features or long-term guarantees.

Given its aggressive pricing and essential rainproof capability, it's the go-to power source in highly price-sensitive markets when powering temporary, high-impact visual displays where longevity beyond the event is not a major concern. It reliably delivers the required 400W to make these vibrant, short-term spectacles possible within tight budgets.