HSF Series – Hot Swap Power Supplies

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HSF Series – Hot Swap Power Supplies


  • 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.
  • 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 the Low Voltage Directive (LVD), EN60950 and the EMC Directives. See applicable Declaration of Conformity.
  • Watch video (MPG, file size 13.5M) of NEBS GR-63-CORE earthquake and office vibration testing. Zip file (file size 12.1M) can be downloaded for off-line viewing.
  • HSF can be custom configured for special applications, such as:
    • Space rocket launcher DC UPS
    • Air Traffic Control
  • 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.

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.

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 1200W/1500W Series are offered in 24V, 36V and 48V models.

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

Model Power (W) Output Voltage(V) Output Current (A)
 HSF 3.3-10-1UR 50 WATT 3.3 10
 HSF 5-10-1UR 50 WATT 5 10
 HSF 12-4.3-1UR 50 WATT 12 4.3
 HSF 15-3.5-1UR 50 WATT 15 3.5
 HSF 24-2.2-1UR 50 WATT 24 2.2
 HSF 28-1.8-1UR 50 WATT 28 1.8
 HSF 48-1.1-1UR 50 WATT 48 1.1
 HSF 3.3-25-1UR 100 WATT 3.3 25
 HSF 5-20-1UR 100 WATT 5 20
 HSF 12-8.4-1UR 100 WATT 12 8.4
 HSF 15-6.7-1UR 100 WATT 15 6.7
 HSF 24-4.2-1UR 100 WATT 24 4.2
 HSF 28-3.5-1UR 100 WATT 28 3.5
 HSF 48-2-1UR 100 WATT 48 2
 HSF 3.3-30-1UR 150 WATT 3.3 3.
 HSF 5-30-1UR 150 WATT 5 3.
 HSF 12-12-1UR 150 WATT 12 12
 HSF 15-10-1UR 150 WATT 15 10
 HSF 24-6.3-1UR 150 WATT 24 6.3
 HSF 28-5.3-1UR 150 WATT 28 5.3
 HSF 48-3.1-1UR 150 WATT 48 3.1
SKU: 313
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