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Silver rectangular DIN rail power supply unit with terminal blocks and LED indicator

Mean Well

Mean Well DRH-120-48 24V 5A 120W DIN rail power supply

SKU CH-ZSQQ-QBXMN

Delivers 24 V at 5 A with 91 % efficiency from a three-phase 340–550 V input, mounts on TS-35/7.5 or 15 DIN rail and meets EN61000-6-2 industrial immunity

  • TypeAT
  • Three-phase 340–550 VAC input suits industrial mains
  • 91 % efficiency cuts heat and running cost
  • DIN-rail mount on TS-35/7.5 or 15 fits standard cabinets
  • EN61000-6-2 immunity meets harsh-environment demands
  • UL 508 listing confirms industrial-control compliance

Industrial DIN-Rail Power Supply

The Mean Well DRH-120-48 is a three-phase AC input unit built for control cabinets and automation panels. It delivers 24 V at 5 A for a continuous 120 W output. Installation uses standard TS-35 rails in 7.5 or 15 mm heights. The design targets engineers who need regulated DC power in harsh electrical environments.

120 W Capacity with 91 % Efficiency

At full load the converter runs at 91 % efficiency, keeping dissipation low inside enclosed cabinets. The wide 340–550 VAC three-phase input tolerates significant mains variation without derating. Built-in constant-current limiting protects the unit during overloads, while over-voltage and over-temperature shutdown prevent damage. Free-air convection cooling means no fan maintenance is required.

Replaces Lower-Immunity or Single-Phase Units

This model suits upgrades where industrial immunity to EN61000-6-2 is now mandatory, or where three-phase supply replaces single-phase infrastructure. The UL508 listing covers industrial control equipment up to 960 W, so the 120 W unit fits within an approved family. Buyers needing parallel redundancy or higher wattage should evaluate larger models in the same series.

Points forts

  • Three-phase 340–550 VAC input suits industrial mains
  • 91 % efficiency cuts heat and running cost
  • DIN-rail mount on TS-35/7.5 or 15 fits standard cabinets
  • EN61000-6-2 immunity meets harsh-environment demands
  • UL 508 listing confirms industrial-control compliance

Caractéristiques

TypeAT

Questions sur cet article

Will the DRH-120-48 run on a legacy 3-phase panel that only delivers 340 VAC?

Yes, the input range starts at 340 VAC and extends to 550 VAC three-phase, so it will operate on that older supply.

How do I confirm the unit is delivering 24 V at 5 A after wiring it to the DIN rail?

The built-in LED lights when the output is live; measure 24 V at the terminals with a multimeter under load to verify 5 A capability.

Does the package include the TS-35/7.5 or 15 DIN rail clips, or must I order them separately?

The supply mounts directly on standard TS-35/7.5 or 15 rail; clips are integral, so no separate mounting hardware is required.

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