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Rectangular aluminium power supply unit with screw terminals and voltage adjustment trimmer

myVolts

myVolts S-240-12 12V 20A 240W power supply

SKU CH-R7CT-EY4KR

A 12 V 20 A 240 W switch-mode supply with overload, over-voltage and short-circuit protection for industrial automation, LED displays, CCTV and 3D printers

  • TypeAT
  • High working efficiency with low DC ripple
  • Withstands low operating temperatures for long service life
  • High insulation strength and excellent insulation performance
  • 100% total load burning test completed
  • Short circuit, overload and overvoltage protection

Industrial 12V 240W supply

This switch-mode unit delivers 12 volts at 20 amps for industrial automation, LED displays, CCTV systems, and 3D printers. It accepts AC 110/220 V with a ±15 % tolerance and carries CCC, FCC and CE compliance marks. The aluminium-alloy chassis houses screw terminals for L, N, ground, V+ and an adjustable +V/ADJ output. Builders who need a different voltage rail or a redundant supply must look elsewhere.

Thermals noise and protection

The supply is rated for 0–40 °C operation and –20–60 °C storage in up to 95 % non-condensing humidity. It uses natural convection cooling with no moving parts, so acoustic output is effectively silent. Built-in short-circuit, overload and over-voltage protection engage automatically, and every unit passes a 100 % full-load burn-in before shipment. Users who require forced-air cooling or extended temperature margins are not served by this design.

Adjustable output and wiring

A built-in +V/ADJ terminal lets installers trim the DC output voltage for specific LED strings or controller boards. Screw terminals accept stripped wires directly, removing the need for proprietary connectors in panel-mount jobs. The package includes only the supply itself; no mounting brackets, DIN-rail clips or configuration software are bundled. Integrators who expect a complete wiring harness or remote-monitoring interface must source those separately.

Points forts

  • High working efficiency with low DC ripple
  • Withstands low operating temperatures for long service life
  • High insulation strength and excellent insulation performance
  • 100% total load burning test completed
  • Short circuit, overload and overvoltage protection

Caractéristiques

TypeAT

Questions sur cet article

How do I wire the AC input and DC output terminals on the S-240-12, and which connection is most often reversed?

Connect L and N to AC mains, GND to the DC negative and V to the DC positive; the step most often reversed is swapping GND and V on the output side

What maintenance or replacement will this unit need over time?

The aluminium-alloy chassis relies on natural convection, so the only regular upkeep is keeping the ventilation slots clear of dust and debris

What is the first limit reached when the supply runs continuously at full 20 A load?

The 0–40 °C working-temperature ceiling is the first constraint; sustained 240 W output in a confined space will hit that limit before overload protection triggers

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