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Rectangular metal power supply unit with ventilation slots

Mean Well

Mean Well LPS-100-12 12V 8.4A 100W power supply

SKU CH-79SW-3CWS2

Delivers 12 V at 8.4 A with universal AC input, overload and over-voltage protection, and fanless convection cooling

  • Product typeAT
  • Delivers stable 12 V at 8.4 A for 100 W loads
  • Universal AC input accepts full voltage range worldwide
  • Built-in protections guard against short circuit, overload and over voltage
  • Silent free-air convection cooling needs no fan
  • 100 % full-load burn-in test validates reliability before shipping

Industrial 12 V 100 W Supply

The Mean Well LPS-100-12 is a single-output switching power supply that delivers 12 V at 8.4 A for a total of 100 W. It accepts a universal AC input range and uses free-air convection cooling with no internal fan. The unit includes short-circuit, overload and over-voltage protection and has passed a 100 % full-load burn-in test. It is built for industrial equipment, automation systems and embedded projects that need a reliable 12 V source.

Installers needing silent convection cooling

This supply suits engineers and installers who require a compact, fanless 12 V unit with built-in protection features and remote on/off control on the LPS-50/75 variants. Buyers who need multiple output voltages, higher current than 8.4 A, or an ATX-form-factor unit for a standard PC build should look at other products.

Single 12 V 8.4 A output

The deciding specification is the single 12 V rail rated at 8.4 A, giving 100 W continuous power. If the load demands more current, a different voltage, or multiple rails, this model will not meet the requirement.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $55.99
Cheaper than about 88% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

What does the AT-type form factor limit in practice?

The AT-type form factor means the unit uses a mechanical power switch rather than soft-on/off signalling, so it cannot be controlled by the motherboard's standby rail.

What mounting provisions does the chassis provide?

The enclosed metal chassis has four corner mounting holes for screw fixing to a flat panel or DIN-rail bracket.

How do you wire the remote on/off control and what mistake should be avoided?

Connect a dry-contact switch across the CN100 pins; the common error is applying external voltage to those pins instead of simply closing the contact.

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