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Kepco Power Solutions
HSF 300W, 600W or 1200W/1500W
(optional meter shown separately)
    HSF 300W/600W/1200W/1500W Metered Photo HSF 300W/600W/1200W/1500W in rack Photo

HSF 50W, 100W or 150W 1U Models
RA 19-1U Rack Adapter



  • Gas and Oil Refineries
  • Pipelines
  • Simulators
  • Air Traffic Control
  • Financial Services
  • Satellite Communications - Ground System
  • Mission Critical Application
  • CCTV
  • Power Over Ethernet (POE)
  • Hot-swappable plug-in power supplies.
  • Designed to be combined in an N+1 fault-tolerant power system.
  • Front panel voltage adjustment trimmer for adjustment of output voltage.
  • Built-in forced current sharing and or-ing diodes.
  • May also be used independently as a multi-output power supply.
  • Designed to be sustainable - new models are backward compatible with existing racks.
  • Available in 1U and 3U sizes. Mounts in 19-, 23-, and 24-inch equipment racks.
  • All models include power factor correction (PFC).
  • Full service customized DC power distribution systems can match power supply output(s) with your load(s).
  • I/O connections via 24 pin connector that plugs into rack adapter. External connections are made via rack adapter.
  • Surface mount technology permits minimum mounting space.
  • Entire RA 19 racks populated with HSF power supplies can be connected in parallel, parallel-redundant or series.
  • HSF are CE Marked per per the LVD, EMC and RoHS 2 Directives. See applicable Declaration of Conformity.
  • Compliant with UL 8750, Standard for LED Equipment,
  • Watch video of NEBS GR-63-CORE earthquake and office vibration testing.
  • HSF can be custom configured for special applications, such as:
  • When HSF modules are paralleled, the module with the highest voltage setting automatically becomes the "master." As long as they are in the same voltage range, the other units are slaves, tracking the master voltage setting and equally sharing load current.
  • Additional Fault Tolerant Solutions with Kepco's Series HSP (hot swap) and HSM (hard wired).

1U: 50W, 100W, 150W -1UR models

  • Include power factor correction (PFC)
  • Uses RA 19-1U rack adapter (holds up to 4 sideways-mounted units)
  • 3.3V, 5V, 12V, 15V, 24V, 28V and 48V models.
Four HSF-1UR modules shown in
Kepco's Series RA 19-1U Rack Adapter.
RA 19-1U Rack Adapter

3U: 50W, 100W, 150W -PFC models

  • Use the RA 19(X)B Series Rack adapters (hold various combinations of 1/8-rack (50W and 100W) and 1/6-rack (150W) units. For combinations available refer to the RA 19 Rack Adapter.

  • 3.3V, 5V, 12V, 15V, 24V, 28V and 48V models.

Six 1/6 rack HSF-PFC modules shown in
Kepco's Series RA 19-6B Rack Adapter.
Series HSF

3U: 300W, 600W and 1200W/1500W models

  • Use RA 19-4C Rack Adapter (holds up to four modules)
  • Remote on-off (standard)
  • Remote voltage programming capability (standard), voltage measured at front panel test points.
  • Front panel meter (Optional)
  • Current sensing signals to monitor individual current output (Optional)
  • Reset button restores output after sensing an over- or undervoltage condition, thermal overload, or fan malfunction.
  • HSF 300W and 600W Series are offered in 5V (300W only), 12V, 15V, 24V, 28V and 48V models.
  • HSF 1500W Series are offered in 24V, 36V, 48V and 60V models.

Four HSF 300W, 600W, 1200W/1500W
modules shown in Kepco's Series
RA 19-4C Rack Adapter.
HSF 600W/1200W/1500W Photo

DC - DC Conversion

All HSF modules are suitable as DC-DC converters, however note that Safety Agency approvals are valid only for a-c input. DC input voltage ranges for HSF models are as follows:
  • 3U, 50W, 100W: 125V - 370V d-c
  • 3U, 150W, 300W, 600W, 1200W/1500W: 110V - 370V d-c
  • 1U, 50W, 100W: 125V - 370V d-c
  • 1U, 150W: 130V - 370V d-c


Contact factory for details regarding options not listed on the associated BUY NOW page.

Feature Description Available on Models Suffix
Meter Adds front panel meter which displays either voltage or current using a front panel mode switch and includes external current monitoring. HSF 300W, 600W and 1500W M
Meter + 0V Functionality Adds front panel meter and also allows output voltage adjustment down to 0V (logic 0, 0 to -0.4V d-c) while maintaining full functionality for LED, alarm relay and meter. HSF 300W and 600W MZ
Current Monitor Allows current monitoring via an internal sense resistor. (This is standard on 300W, 600W and 1200/1500W models.) HSF 50W, 100W, and 150W (-PFC and -1UR) C
Improved Efficiency Offers improved efficiency, lighter weight and a 50W, 28V Model. HSF 50W, 100W, and 150W (-PFC and -1UR) T
Remote On-Off Allows remote on-off control. (This is standard on 300W, 600W and 1200/1500W models). HSF 50W, 100W, and 150W (-PFC and -1UR) X
Current Monitor, Remote On-Off Includes both current monitoring and remote on-off. HSF 50W, 100W, and 150W (-PFC and -1UR) Y
MIL-STD-461 Compliance Includes compliance to MIL-STD-461. All (except legacy models) (See note)
Environmental Compliance Includes reduced susceptibilityto shock, vibration, temperature, humidity and fungus. All (except legacy models) (See note)
NOTE: Select MIL-STD-461 or Environmental compliance options using Quote Request form.

A full color brochure for Kepco's Hot Swap HSF and HSP models is available for download.

Download Product Specifications (PDF)

Kepco can also provide full service customized DC power distribution systems to match the power supply output(s) with your load(s).

Rack Assembly
with 10 RA 60 Rack Adapters and 30 HSP Power Supplies

DC Power Distribution


  • RA 19-(X)B:
22 lbs, 10.0 Kg
  • RA 19-1U:
22 lbs, 10.0 Kg
  • RA 19-4C:
22 lbs, 10.0 Kg
  • 50W:
4 lbs, 1.8 Kg
  • 100W:
5 lbs, 2.3 Kg
  • 150W:
5.5 lbs, 2.5 Kg
  • 300W:
9.0 lbs, 4.1 Kg
  • 600W:
9.0 lbs, 4.1 Kg
  • 1200/1500W:
9.0 lbs, 4.1 Kg

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