ServerTech Sentry Fail Safe Transfer Switch

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ServerTech’s Fail-Safe transfer switches supply single-power equipment with dual, redundant power sources.

The Sentry Fail-Safe Transfer Switch (FSTS) features two input power feeds, from separate AC circuits, to supply single-feed equipment with dual, redundant power sources. A primary AC circuit provides power to the connected device(s). With this rack automatic transfer switch, if the primary source becomes unavailable for whatever reason, then the Sentry FSTS auto-switches to the secondary power source to support the connected equipment.

The transfer from one power source to the other is seamless to the connected equipment with this rack automatic transfer switch. When the secondary power source is available, an interruption of the primary power source will not affect the equipment’s uptime or performance.

Sentry Fail Safe Transfer Switch
Sentry Fail Safe Transfer Switch (FSTS)
Unique to the Sentry FSTS is the ability to designate which power source is primary and which is secondary. With the Primary Select switch, a power engineer simply toggles the switch from primary to secondary, which transfers the load from one power feed to the other. Now, the “secondary” becomes “primary” and the power engineer can safely work on the first power source without dropping power to the connected equipment.

Also exclusive to the FSTS is the ability to select the high voltage (208-230V) or low voltage (110-120V) operating range of the AC power source. Use the Sentry FSTS as a universal power transfer switch for all cabinets and servers, regardless of the voltage. To apply power, just remove a panel and then choose the appropriate voltage range for the Fail-Safe Transfer Switch.

Server Technology Fail-Safe Transfer Switch Comparison

PTTS C Series CS Series CW Series
Function Basic (Not networked) Metered (Not networked) Smart (Networked) Switched (Networked)
with outlet ON/OFF/Reboot control
Total Number of Outlets (8) IEC C13 200-240V: (8) IEC C19
200-240V: (16) IEC C13
120V: (16) NEMA 5-20R
(2) IEC C19 120 V: (16) NEMA 5-20R
200-240 V: (16) IEC C13
Power Distribution Under
Normal Operation
Primary selector switch to supply power to all 8 outlets Load sharing. Input A powers Outlet A, Input B powers Outlet B Load sharing. Input A powers Outlet A, Input B powers Outlet B Load sharing. Input A powers Outlet A, Input B powers Outlet B
Input Power Cord Sold separately 16/20 A versions: sold separately
30/32 A versions: hardwired
16/20 A version: sold separately
30/32 A version: hardwired
16/20 A version: sold separately
30/32 A version: hardwired
Input Power Options 100-240V; 20A
(user accessible selector switch)
120 V; 20 A or 30 A
208 V; 20 A or 30 A
230 V; 16 A or 32 A
120 V; 20 A or 30 A
208 V; 20 A or 30 A
230 V; 16 A or 32 A
120 V; 20 A or 30 A
208 V; 20 A or 30 A
230 V; 16 A or 32 A
Phase Synchronization
Required?
Yes No Yes Yes
Form Factor 1U, Horizontal Mount 2U, Horizontal Mount 1U, Horizontal Mount 2U, Horizontal Mount
Temperature/Humidity Sensors * No No Up to 2 (P/N EMTH-1-1) Up to 2 (P/N EMTH-1-1)
Input Current Monitoring No Yes Yes Yes
Input Current LEDs No One per input feed One per input feed One per input feed
Expansion Unit to Share
One IP Address
No No Yes Yes
Branch Circuit Protection Internally fused Internally fused Internally fused User-resettable breakers

* Environmental monitoring sensors sold separately.

Product List

Model #Total OutletsInput Power CapacityInput Nominal VoltageInput CurrentInput Current RatedPhasePlug TypeBranch MonitoringOutlet MonitoringDimensionsMountingPRO2Input MonitoringAlt Phase
C-16HFE-P32167.323032321-Phase (L-N)IEC 230V/32A 2P+PE 6HrNoneNone17.0 x 3.5 x 10.0 in. (254.0 x 89.0 x 432.0 mm.)2U HorizontalCDU1Current (A)No
C-16HF2-L3016520830241-Phase (L-L)NEMA L6-30PNoneNone17.0 x 3.5 x 10.0 in. (254.0 x 89.0 x 432.0 mm.)2U HorizontalCDU1Current (A)No
C-16HF1-L30162.812030241-Phase (L-N)NEMA L5-30PNoneNone17.0 x 3.5 x 10.0 in. (254.0 x 89.0 x 432.0 mm.)2U HorizontalCDU1Current (A)No
C-8HF2-L3038520830241-Phase (L-L)NEMA L6-30PNoneNone17.0 x 3.5 x 10.0 in. (254.0 x 89.0 x 432.0 mm.)2U HorizontalCDU1Current (A)No
C-16HF2-C20163.320820161-Phase (L-L)IEC C20 200-240V InletNoneNone17.0 x 3.5 x 10.0 in. (254.0 x 89.0 x 432.0 mm.)2U HorizontalCDU1Current (A)No
C-16HF1-C20161.912020161-Phase (L-N)IEC C20 100-120V InletNoneNone17.0 x 3.5 x 10.0 in. (254.0 x 89.0 x 432.0 mm.)2U HorizontalCDU1Current (A)No
C-8HF2-C20383.320820161-Phase (L-L)IEC C20 200-240V InletNoneNone17.0 x 3.5 x 10.0 in. (254.0 x 89.0 x 432.0 mm.)2U HorizontalCDU1Current (A)No
PTTS-H008-0-02M83.320816161-Phase (L-L)IEC C20 100-240V InletNoneNone17.2 x 1.75 x 8.0 in. (204.0 x 45.0 x 437.0 mm.)1U HorizontalCDU1NoneNo
C-8HFE-C20383.623016161-Phase (L-N)IEC C20 200-240V InletNoneNone17.0 x 3.5 x 10.0 in. (254.0 x 89.0 x 432.0 mm.)2U HorizontalCDU1Current (A)No
C-16HFE-C20163.623016161-Phase (L-N)IEC C20 200-240V InletNoneNone17.0 x 3.5 x 10.0 in. (254.0 x 89.0 x 432.0 mm.)2U HorizontalCDU1Current (A)No
C-8HFE-P32387.323032321-Phase (L-N)IEC 230V/32A 2P+PE 6HrNoneNone17.0 x 3.5 x 10.0 in. (254.0 x 89.0 x 432.0 mm.)2U HorizontalCDU1Current (A)No
CW-16HFEA452163.623016161-Phase (L-N)IEC C20 200-240V InletSenseNone17.2 x 3.5 x 10.0 in. (254.0 x 89.0 x 437.0 mm.)2U HorizontalCDU1Current (A)No
CW-16HF2C452165.020830241-Phase (L-L)NEMA L6-30PSenseNone17.2 x 3.5 x 10.0 in. (254.0 x 89.0 x 437.0 mm.)2U HorizontalCDU1Current (A)No
CW-16HFEK452167.323032321-Phase (L-N)IEC 230V/32A 2P+PE 6HrSenseNone17.2 x 3.5 x 10.0 in. (254.0 x 89.0 x 437.0 mm.)2U HorizontalCDU1Current (A)No
CW-16HF2A452163.320820161-Phase (L-L)IEC C20 200-240V InletSenseNone17.2 x 3.5 x 10.0 in. (254.0 x 89.0 x 437.0 mm.)2U HorizontalCDU1Current (A)No
CS-2HFEK222A327.323032321-Phase (L-N)IEC 230V/32A 2P+PE 6HrNoneNone17.0 x 1.75 x 7.0 in. (178.0 x 45.0 x 432.0 mm.)1U HorizontalCDU1Current (A)No
CS-2HFEA222A323.623016161-Phase (L-N)IEC C20 200-240V InletNoneNone17.0 x 1.75 x 7.0 in. (178.0 x 45.0 x 432.0 mm.)1U HorizontalCDU1Current (A)No
CS-2HF2A222A323.320820161-Phase (L-L)IEC C20 200-240V InletNoneNone17.0 x 1.75 x 7.0 in. (178.0 x 45.0 x 432.0 mm.)1U HorizontalCDU1Current (A)No
CS-2HF2C222A325.020830241-Phase (L-L)NEMA L6-30PNoneNone17.0 x 1.75 x 7.0 in. (178.0 x 45.0 x 432.0 mm.)1U HorizontalCDU1Current (A)No
CW-16HF1A452161.912020161-Phase (L-N)IEC C20 100-120V InletSenseNone17.2 x 3.5 x 10.0 in. (254.0 x 89.0 x 437.0 mm.)2U HorizontalCDU1Current (A)No
CW-16HF1B452162.812030241-Phase (L-N)NEMA L5-30PSenseNone17.2 x 3.5 x 10.0 in. (254.0 x 89.0 x 437.0 mm.)2U HorizontalCDU1Current (A)No

 

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