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Rectangular metal power supply unit with label showing input and output ratings

KHACHIMO

KHACHIMO CHB300W-48S28 300 W power supply 18-75 V in 28 V 10.7 A out

SKU CH-1K7R-45PYG

Converts 18–75 V input to a regulated 28 V, 10.7 A output delivering up to 300 W

  • TypeATX
  • Wide 18-75 V input suits varied DC sources
  • 300 W continuous output powers demanding loads
  • Stable 28 V 10.7 A rail delivers reliable voltage
  • Tested working unit ensures dependable operation

DC power supply for industrial systems

The CHB300W-48S28 accepts a wide 18-75 V input and delivers a regulated 28 V output at up to 10.7 A. Rated for 300 W, it suits telecom, automation and embedded equipment that run from a 48 V bus. The unit is new and tested working before dispatch.

Sustained-load behaviour

Continuous operation at the full 300 W rating is supported within the specified input range. The 19.5 A maximum input current reflects worst-case draw at low line voltage. No derating curve or thermal limits are supplied, so designers should verify cooling for their enclosure.

Highlights

  • Wide 18-75 V input suits varied DC sources
  • 300 W continuous output powers demanding loads
  • Stable 28 V 10.7 A rail delivers reliable voltage
  • Tested working unit ensures dependable operation

Specifications

TypeATX

Questions about this item

How much heat does the CHB300W-48S28 generate when running at 300 W continuously?

At full 300 W load the unit draws up to 19.5 A from the 18-75 V source, so waste heat equals the difference between input power and the 28 V 10.7 A output; ensure adequate airflow around the supply.

What input connector or wiring must I already have to connect the 18-75 V source to this supply?

The supply accepts a 18-75 V DC source capable of delivering 19.5 A; you need appropriately rated cables and a connector matching the unit's input terminals.

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