The Sentry Fail-Safe Transfer Switch (FSTS) features two input power feeds, from separate AC circuits, to supply single-power 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.

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 to the Fail-Safe Transfer Switch.

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

Specifications

Standards

• cTUVus ? UL 60950-1-2003
  
•  CAN/CSA 22.2 No. 60950-1:2003
  
•  TUVGS ? EN 60950-1:2001
  
•  FCC Class A, Part 15
  
•  CE
  
• EMC-EN 55022 Class A, EN 55024
  

• Compliant to UL 60905-1
  

 Fail-Safe redundancy between Primary and Secondary power sources

• Primary-Select switch to designate primary power source.
  
• Range-Select switch to designate operating range (voltage).

Indicator LEDs

• Confirms power supplied to outlets.
  
• Identifies condition as primary power source or secondary power source supplying power to outlets.
  

Voltage Range Select

• Supplies either 100-120V or 208-230V AC voltage ranges.
  
• 120V and 230V equipment cannot be intermixed.
  
• All power input feeds must be removed prior to selecting/altering operating range.
  
• Remove Range Select faceplate covering to select appropriate voltage.
  
• Lucite window allows visual confirmation of voltage range.
  
• Switch in up  position designates 208/230V.
  
• Switch in down  position indicates 110/120V.

• Dual-brace cable retainer brackets on power input feeds.
  
• Clip-style cable-retention retainer brackets at each power outlet receptacle.
  
• Adjustable mounting for front or rear panel, flush or recessed mounting.