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Rectangular metal DIN-rail power supply with ventilation slots and terminal blocks

Mean Well

Mean Well SDR-960-48 48V 20A 960W DIN Rail Power Supply

SKU CH-0B1A-8X1DK

Delivers 48 V at 20 A with 94 % efficiency and active PFC, mounting on TS-35 DIN rail for industrial control equipment

  • TypeProprietary Power Supply
  • High efficiency up to 94 % reduces energy waste
  • Built-in active PFC function improves power factor
  • Cooling by free air convection enables silent operation
  • Installs on DIN rail TS-35 7.5 or 15 for flexible mounting
  • Meets EN61000-6-2 industrial immunity level for reliable performance

Industrial DIN Rail Power Unit

The Mean Well SDR-960-48 is a 48V 20A single-output supply rated at 960W. It targets engineers and integrators building control cabinets, automation systems or distributed power architectures that demand regulated DC on a standard rail.

Mounting and Expansion

The unit clips onto TS-35 DIN rail in either 7.5 or 15 mm height. Convection cooling removes the need for forced airflow inside the enclosure. Active PFC and a 130% peak-load capability handle transient demands, while current-sharing allows up to four units to combine for 3840W total output.

Fit and Alternatives

Suitable for new industrial builds that require UL508-listed hardware and EN61000-6-2 immunity. Not suited for installations limited to 180-264VAC mains, for projects needing DC-OK relay contacts on a 75W frame, or for battery-charging applications without external control circuitry.

Highlights

  • High efficiency up to 94 % reduces energy waste
  • Built-in active PFC function improves power factor
  • Cooling by free air convection enables silent operation
  • Installs on DIN rail TS-35 7.5 or 15 for flexible mounting
  • Meets EN61000-6-2 industrial immunity level for reliable performance

Specifications

TypeProprietary Power Supply

Questions about this item

At what output current does the 130% peak-load limit activate on this 48 V 20 A unit?

The supply delivers 20 A continuously and can reach 26 A for short periods before the 130% peak-load protection engages.

How much heat must the enclosure dissipate when the supply runs at full load continuously?

At 94% efficiency the unit loses roughly 60 W as heat, so the cabinet needs enough free-air convection to remove that power without forced airflow.

Which DIN-rail profiles are compatible with the built-in mounting clip?

The clip fits standard TS-35 rails in both 7.5 mm and 15 mm heights.

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