Rack-Mount Static Transfer Switch

Highly reliable power redundancy for mission critical IT equipment

The Rack-Mount Static Transfer Switch (rSTS) safeguards the uninterrupted operation of mission critical IT equipment. Powered by two independent power sources, the rSTS rapidly switches from one source to the other automatically when the power supply used to power its connected load fails. For datacenter applications the rSTS allows power drop risk to be shared or distributed to each rack to prevent power loss for the whole system. The rSTS offers an efficient and reliable switch that supports the high redundancy requirements of mission critical power systems.Supports power redundant configurations for high reliability

▲ Supports power redundant configurations for high reliability



  • Adopts SCR with a relay in parallel as a switching device to increase reliability without sacrificing efficiency
  • Supports power redundant configurations for high reliability
  • Monitors the health of the power source and performs the transfer automatically


  • Rack-mounted type with 1U size for easy installation and relocation
  • Built-in SNMP for remote management
  • LED indicators show power flow
  • Self-test function


  • Break before make prevents short circuits between two sources

Technical Specifications

Model STS16002SR / STS30002SR
Rated Current STS16002SR : 16A
STS30002SR : 30A *
Regulatory STS16002SR : CE / UL
STS30002SR : CE
Nominal Voltage 200/208/220/230/240 Vac
Display LED
Input STS16002SR : C20 x 2 pcs
STS30002SR : IEC309 / Hardwired
Output STS16002SR : C13 x 4 + C19 x 1 pcs
STS30002SR : IEC309 / Hardwired
Communication SNMP
Operating temperature 0~40℃
Typical Transfer Time 6~10ms
Storage temperature -15~50℃
Humidity 0%~95% RH (non-condensing)
Audible Noise (at one meter) <40 dB
Physical Dimensions (H x W x D) STS16002SR : 43 x 440 x 385 mm
STS30002SR : 43 x 440 x 385 mm / 43 x 440 x 390 mm
Weight STS16002SR : 4.85kg
STS30002SR : 7.6kg / 6.2kg