12V 30A AC-DC Adapter Power Supply

This 12V 30A regulated switching power supply is a versatile and widely used AC-to-DC converter designed for medium- to high-power 12V applications . It accepts a universal AC input of 110–220V at 50/60 Hz , making it usable in virtually any country, and produces a clean, stable 12V DC output with a rated current of 30A (theoretical maximum 360W ). The internal switching circuitry includes multiple safety protections , providing automatic shutdown in case of overload, overvoltage, or short-circuit conditions. A small trim potentiometer (labeled ADJ) on the output terminal block allows the user to fine-tune the output voltage for applications that require a specific voltage, such as charging certain battery types or matching a particular LED strip. The unit cools itself using free air convection (no internal fan in the basic model), which makes it quiet and reliable, but means it should be installed in a well-ventilated area and never used in humid environments such as bathrooms . The metal chassis acts as a heat sink and should be mounted with adequate airflow on all sides. This power supply is certified to CE, FCC, and CCC safety standards, and includes screw terminals for AC input, DC output, and earth ground. Specifications Input Voltage: AC 110–220V (universal, full-range) Input Frequency: 50 / 60 Hz Output Voltage: DC 12V (adjustable via on-board trimmer) Output Current: 30A (rated maximum) Output Power: 360W (theoretical maximum) Recommended Continuous Load: ~20–24A (? 80% of rated) Protections: Overload, overvoltage, short-circuit Cooling: Free air convection (no fan in standard version) Safety Compliance: CCC / FCC / CE Working Temperature: 0 – 40 °C Storage Temperature: -20 – 60 °C Ambient Humidity: 0 – 95% (non-condensing) Test: 100% full-load burn-in tested before shipment Mounting: Metal chassis with mounting holes Terminal Connections L — AC power input (Live) N — AC power input (Neutral) GND / ? — Earth ground (chassis) ?V — DC output negative ("?") +V — DC output positive ("+") +V / ADJ — Output voltage adjustment trimmer Applications LED strip lighting (5050, 5630, COB strips) and indoor LED installations CCTV and security camera systems and DVR/NVR power 3D printer main power supply (heated bed and electronics) CNC machine electronics and stepper motor drivers Audio amplifiers and car-audio bench testing Lab and bench power for prototyping and electronics workshops Communication and networking equipment power Industrial control systems and PLC power Robotics and motor control projects Battery charging circuits (with appropriate current/voltage tuning) DIY electronics and Arduino / Raspberry Pi project power Stage lighting and small event equipment