Server Technology CW-16HF1B452 Switched FSTS Dual Input

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The Server Technology Switched Fail-Safe™ provides fail-over redundancy to single or dual-power supply servers and network devices. Exclusive to the Switched Fail-Safe is its ability to carry loads on the A circuit, B circuit or both and to remotely manage the outlets.

Similar, but unlike a common automatic transfer switch, the Switched Fail-Safe unit is unique in that it contains two (2) in-feeds and two (2) banks of outlets.

For example he "A" in-feed routinely powers just the A1-8 outlets, and the "B" in-feed routinely powers just the B1-8 outlets. However, if the "A" in-feed goes down, the "B" in-feed powers all 16 outlets and the same if the "B" in-feed goes down, the "A" in-feed powers all the outlets.


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This "Fail-Safe" method has several advantages compared to a standard ATS because it does not prohibit load balancing between the two supplied circuits. A standard ATS contains two-in-feeds, but runs all outlets from just one source, with the secondary source only being used once an outage occurs on the capacity. This results in less heat, less resistance, and consequently less of a voltage drop compared to the same load existing on just one source. Only when an outage occurs on one of the two sources will the entire load be applied to a single source.

NOTE - This transfer switch requires that the applied AC waveform from both power sources be in-phase with respect to each other.

  • Branch Monitoring:Sense
  • Branch Overcurrent Protection:5 kAIC
  • Branch Overcurrent Protection Type:Circuit Breaker
  • Dual Input:Yes
  • High Retention Outlets:No
  • Input Current Display:Standard
  • Input Monitoring:Current (A)
  • Locking Outlets:No
  • Max Operating Temperature:50 °C
  • Fast Movers:No
  • Mounting:2U Horizontal
  • Outlet Monitoring:None
  • PDU Platform:
  • Power Pivot Input:No
  • Product Height (inch):3.5
  • Product Height (mm):89
  • Product Max Depth (inch):10.0
  • Product Max Depth (mm):254
  • Product Nominal Depth (inch):10.0
  • Product Nominal Depth (mm):254
  • Product Width (inch):17.2
  • Product Width (mm):437
  • Transfer Switch:Yes
  • Transfer Switch Phase Synch Required:Yes
Input Power Capacity (kW): 2.8
Input Plug Type: NEMA L5-30P
Input Current (A): 30
Input Current Rated (A): 24
Input Nominal Voltage (V): 120
Input Phase: 1-Phase (L-N)
Input Cord Location: Horizontal
Total Outlets: 16
NEMA 5-20R Count: 16

Part Code:

CW-16HF1B452

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Server Technology CW-16HF1B452 Switched FSTS Dual Input

Server Technology CW-16HF1B452 Switched FSTS Dual Input

The Server Technology Switched Fail-Safe™ provides fail-over redundancy to single or dual-power supply servers and network devices. Exclusive to the Switched Fail-Safe is its ability to carry loads on the A circuit, B circuit or both and to remotely manage the outlets.

Similar, but unlike a common automatic transfer switch, the Switched Fail-Safe unit is unique in that it contains two (2) in-feeds and two (2) banks of outlets.

For example he "A" in-feed routinely powers just the A1-8 outlets, and the "B" in-feed routinely powers just the B1-8 outlets. However, if the "A" in-feed goes down, the "B" in-feed powers all 16 outlets and the same if the "B" in-feed goes down, the "A" in-feed powers all the outlets.