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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

  • Product 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.

How it compares

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

Price $114.99
Cheaper than about 61% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeAT

Questions about this item

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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