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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

  • Product 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.

How it compares

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

Price $244.99
Pricier than about 71% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product 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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