The Maxcom 12V 30A 360W Industrial Switch Mode Power Supply (SMPS Metal Casing) is a heavy-duty, regulated DC constant-voltage power supply engineered for reliable, high-efficiency power delivery in LED lighting systems, industrial automation, 3D printers, and electronics test benches. Operating on a switch-selectable AC mains input (110V/220V AC), it converts AC voltage into a clean, low-ripple 12V DC output capable of delivering up to 30A of continuous load current (360W total output). Built inside an extruded, ventilated honeycomb aluminum chassis with an integrated cooling fan and an onboard voltage adjustment trimpot, it features comprehensive protection against short circuits, overloads, overvoltage, and excessive heat. The Maxcom 12V 30A SMPS is widely used for multi-channel LED strip lighting, CCTV security camera installations, RepRap 3D printers, CNC stepper systems, DC motor controllers, and benchtop testing setups.

Specifications

• Brand / Series: Maxcom Industrial High-Power Switching Power Supply
• Power Supply Type: Enclosed Regulated Switch-Mode Power Supply (SMPS)
• Rated DC Output Voltage: 12.0 V DC (Nominal)
• Output Voltage Adjustable Range: 10.8 V to 13.2 V DC (±10% via onboard trimpot)
• Rated Output Current: 30.0 A Max. (Continuous output capability)
• Rated Output Power: 360 W Max.
• AC Input Voltage Range: 100V–120V AC / 200V–240V AC (Selectable via side slide switch, 50/60 Hz)
• Output Voltage Ripple & Noise: ≤ 120 mVp-p
• Line Regulation: ± 0.5%
• Load Regulation: ± 1.0%
• Efficiency: ≥ 82% to 85% (at full rated load)
• Cooling Method: Forced Air Cooling via Built-in DC Brushless Exhaust Fan (Auto-thermal / Continuous operation)
• Housing / Chassis Material: Heavy-Duty Perforated Aluminum Honeycomb Enclosure (Corrosion & oxidation resistant)
• Terminal Block Interface: 9-Terminal Heavy-Duty Barrier Screw Strip with Clear Protective Cover:
  • Terminals 1, 2, 3: DC Output Negative (-V / -V / -V / Common GND)
  • Terminals 4, 5, 6: DC Output Positive (+V / +V / +V / +12V DC Rail)
  • Terminal 7: Earth Ground (⏚ / FG - Frame Ground)
  • Terminal 8: AC Neutral (N)
  • Terminal 9: AC Line / Live (L)
• Voltage Trimmer: Integrated ADJ precision potentiometer adjacent to terminal block
• Built-in Protections:
  • Short-Circuit Protection (Hiccup mode, automatic recovery after fault clearance)
  • Overload Protection (105% to 150% rated load current foldback/shut-off)
  • Overvoltage Protection (13.8V to 15.0V clamping / shut-down)
  • Over-Temperature Thermal Shut-Off Protection
• Dielectric Withstand Voltage (Hi-pot): 1500V AC (Input to Output, 1 min)
• Insulation Resistance: ≥ 100 MΩ (at 500V DC)
• Operating Ambient Temperature: -10°C to +60°C (Derate output power above 50°C)
• Storage Temperature: -20°C to +85°C
• Dimensions: Approx. 215 mm × 115 mm × 50 mm (L × W × H)
• Net Weight: Approx. 700 g to 780 g

Features

• High 30A / 360W Continuous Capacity: Provides abundant current capacity to drive multiple high-power DC sub-circuits, high-density LED strips, or motor stages from a single power source.
• Active Forced-Air Cooling: An integrated brushless DC exhaust fan and perforated aluminum honeycomb casing ensure efficient heat extraction from internal switching MOSFETs and transformers.
• Triple DC Output Terminals: Three parallel pairs of +V and -V screw terminals simplify multi-circuit branch wiring without crowding single terminal posts.
• Front-Accessible Voltage Trimmer (+V ADJ): Onboard potentiometer allows precision trimming from approximately 10.8V to 13.2V to offset line voltage drops on long cable runs.
• Rugged Metal Enclosure: Aluminum casing provides high mechanical rigidity, effective passive heat dissipation, and superior electromagnetic interference (EMI) shielding.
• Multi-Layer Circuit Protection: Integrated short-circuit, overload, overvoltage, and thermal protection safeguard both the power unit and connected downstream hardware.

Common Applications

• High-Density LED Lighting: Powering multiple parallel runs of 12V SMD 5050, SMD 2835, and COB LED strips, architectural accents, and lightbox signage.
• 3D Printers & CNC Routers: Reliable 12V power for heated beds (MK2B/MK3), hotends, NEMA 17/23 stepper drivers, and cooling fans.
• CCTV & Security Systems: Centralized 12V DC power distribution hub for multi-channel camera systems, PTZ cameras, DVRs, and door access control systems.
• Automotive Bench Testing: Powering car stereos, 12V audio amplifiers, automotive lighting, and 12V DC accessories indoors on a workbench.
• Peltier Thermoelectric Cooling: Driving high current into TEC1-12706 thermoelectric cooler modules for custom cooling assemblies and cold boxes.
• Robotics & DC Motor Drives: Stable power delivery for high-current DC brushed and brushless motor controllers, linear actuators, and high-torque servos.

Usage Tips

• Input Voltage Selector Check (CRITICAL): Before connecting AC mains power, verify the 110V / 220V slide switch located on the side of the chassis. Ensure it matches your local utility voltage (220V/230V or 110V/115V) to prevent severe internal component damage.
• Earth Grounding Connection: Always wire the Earth Ground terminal (FG) directly to a genuine mains earth ground wire to discharge internal EMI filter leakage and ensure operator safety.
• Load Distribution Across Terminals: When drawing currents over 10A–15A, distribute the output wiring across the three separate +V and -V terminals rather than concentrating the full 30A on a single screw terminal to prevent localized terminal heating.
• Recommended Wire Gauge: Use stranded copper wire sized appropriately for high DC currents (e.g., 12 AWG to 14 AWG stranded wire or 2.5 mm²–4.0 mm² copper) with crimped fork/spade lugs for low-resistance connections.
• Continuous Duty Derating: For 24/7 continuous operation (such as permanent LED signage or print farms), adhere to the standard 80% rule (running at ≤ 24A / ~290W continuous load) to reduce component heat stress and prolong electrolytic capacitor lifespan.
• Ventilation Clearance: Ensure at least 50 mm (2 inches) of unobstructed clearance around the fan vent and perforated casing to allow adequate cooling airflow.