China 300W Aluminum Switching Power Supply Suppliers, Manufacturers - Factory Direct Price

Product Details

Buy quality 300W Aluminum Switching Power Supply from Starwell factory in China. It supports dual output of 12V and 24V or single-channel constant voltage output, meeting diverse power requirements for various devices. Equipped with an internal EMC filter circuit, it complies with electromagnetic compatibility standards, effectively reducing interference and ensuring stable operation of nearby sensitive equipment.

It includes multiple protection mechanisms such as overload, overvoltage, short-circuit, and over-temperature protection, automatically recovering after fault clearance to ensure long-term safe operation. With a conversion efficiency exceeding 88%, it delivers energy savings and environmental benefits.

Designed without waterproofing (IP20), it is suitable for dry, clean indoor environments such as industrial control cabinets, LED light strips, 3D printers, security surveillance systems, and communication equipment. The aluminum case features a grounding terminal design that further enhances safety.

Compact in size and easy to install, the unit operates with low noise via natural convection or optional forced air cooling. Certified with CE and RoHS standards and backed by a 2-year warranty, this power supply is an ideal choice for high-performance constant-voltage power solutions.

Features

1.LED switching power supply using pulse width modulation (PWM) switching technology designed to ensure power supply stability and high efficiency.

2. Product interference, through the EMC testing, ripple ≤ 50MV.

3. Efficiency above 80%, temperature ≤ 25 °C.

4.LED switching power supply with overvoltage protection, short circuit protection, overload protection.

5. Constant current output to ensure the stability of the power, so that LED lighting effects better and live longer.

6. Products have the anti-interference ensures long-life LED strips, reducing the LED lighting decline.

Unlike the 100W series designed for natural cooling and compact indoor applications, this 300W aluminum-case switching power supply is specifically engineered for high-power, high-density load scenarios. With an increased output of up to 300W, heat generation rises significantly; therefore, it features active thermal control with a fan combined with a large surface area aluminum housing to ensure stable operation across output currents from 3A to 25A, achieving superior case temperature rise performance compared to natural cooling solutions.

Key Differentiation Highlights:

Dual-output design: Compared to a single 100W constant-voltage output, the 300W version provides two independent outputs at 12V and 24V (total power 300W), enabling simultaneous power supply for devices with different voltage requirements (e.g., 24V for LED strips and 12V for fans/controllers), reducing the need for external DC-DC converters.

Thermal Management and Structure: The 100W model features a closed, fanless design with minimal heat dissipation holes, while the 300W model comes with an intelligent temperature-controlled fan. The fan remains off and silent when the load is below 150W, and automatically activates above 150W, balancing quiet operation with effective cooling.

Higher current output: up to 25A at 12V and 12.5A at 24V, ideal for powering high-current devices such as large 3D printer heated beds, multiple CCTV cameras, industrial motors, and more.

Wide voltage input: supports 90V–264V global wide voltage (100W models typically switch between 110/220V), suitable for unstable power grid conditions.

300W Aluminum Switching Power Supply

Safety and Certification

Equipped with EMC certification, overload/overvoltage/short-circuit/over-temperature protection, the 300W model additionally features input undervoltage protection and output surge suppression to prevent equipment damage from impact during high-power startup. The aluminum casing is thickened to 1.2mm (1.0mm for 100W), offering enhanced vibration resistance.

Typical Applications

Large-scale LED strip lighting project (>20 meters)

Industrial-grade 3D printers, laser engravers

Security Monitoring Center (16 or more camera channels)

Communication base station, outdoor cabinet (non-waterproof, requires enclosure)

Installation note: As it uses fan cooling, ensure that the air intake and exhaust vents are unobstructed. The dimensions are larger than those of the 100W model (approximately 215×115×50mm). Certified with CE and RoHS, comes with a 2-year warranty.

Specification

Model	S-300-12	S-300-24
AC input voltage range	110-264VAC
Input current	0.5A/115V 0.25A/230V
AC impulse current	Cold-start current 13A/115V 26A/230V
DC output voltage	12V	24V
DC output power	300W	300W
Rated output current	25A	12.5A
Output voltage error	±1%	±1%
Efficiency	85%	85%
Wave and noise	100mVp-p	100mVp-p
Inlet stability	±0.5%	±0.5%
Load stability	±0.5%	±0.5%
Leakage current	<0.5mA/240VAC
Overload protection	105% - 150% rated power, automatically recovery
Vibration	10500Hz,2G 10min./1cycle,Period for 60min,Each axes
Cooling method	Natural cooling air convection
Working temperature and humidity	- 20 ° ~ 60 ° c / 20% ~ 90% RH (no frost)
Store temperature and humidity	- 40 ° ~ 85 ° c / 10% ~ 95% RH (no frost)
Safety standards	CE(EMC+LVD),Rohs
Dimension	215x115x50mm
Weight	0.8kgs