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Compact metal AT power supply with perforated case, screw terminals and voltage adjuster

myVolts

myVolts 12V 20A AT Power Supply

SKU CH-0C1S-33RHB

Converts AC 110-265 V to DC 12 V at 20 A with overload, over-voltage and short-circuit protection in a compact 645 g metal case

  • TypeAT
  • Converts AC 110-265V to stable DC 12V 20A for reliable power delivery
  • Built-in overload, over-voltage and short-circuit protection keeps connected equipment safe
  • Metal case with ventilation holes enables efficient fan-less cooling by free convection
  • Compact 645g unit is easy to transport and install in tight spaces
  • Certified to CCC, FCC and CE standards for verified safety compliance

12V 20A AT Power Supply

This AT form-factor power supply converts AC mains into a regulated 12V DC output rated at 20A. It is intended for installers and technicians who need a compact driver for LED strips, CCTV cameras, 3D printers or car audio amplifiers. The wide AC110-265V input range allows operation on most household circuits worldwide.

Installation and common issues

The unit uses screw terminals labelled L and N for AC input, GND for negative DC output, V for positive DC output and +V/ADJ for voltage adjustment. Wiring must follow these markings exactly; reversing polarity or connecting AC to the DC terminals will trip the short-circuit and over-voltage protections. Free-convection cooling relies on the perforated metal case, so the supply must be mounted with clearance around the ventilation holes.

Output current capacity

The single specification that determines suitability is the 20A maximum output current at 12V. Systems drawing more than 20A will trigger overload protection and shut down, while loads well below this rating will operate normally. Buyers who need more current must select a higher-rated supply.

Punti di forza

  • Converts AC 110-265V to stable DC 12V 20A for reliable power delivery
  • Built-in overload, over-voltage and short-circuit protection keeps connected equipment safe
  • Metal case with ventilation holes enables efficient fan-less cooling by free convection
  • Compact 645g unit is easy to transport and install in tight spaces
  • Certified to CCC, FCC and CE standards for verified safety compliance

Caratteristiche tecniche

TypeAT

Domande su questo articolo

How can I confirm the unit is delivering a stable 12V 20A output after wiring it up?

Measure the DC output terminals with a multimeter under load; it should read 12 V and the protection features will engage if current exceeds 20 A.

What comes in the package and which cables or connectors must I source separately?

The box contains only the power supply; you must supply your own AC mains lead and DC output wiring for the L, N, GND and V terminals.

Which version should I choose for driving 5050 or 5630 LED strips at full brightness?

The single 12 V 20 A model listed is rated for 5050, 5630, 5730 and other compatible strips, so no alternative capacity version exists.

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