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Main Features

  • Increased power quality
  • Increased noise reduction
  • Power blackout protection
  • Power redundancy
  • Automatic static switching
  • Easy static and mechanical transfer to input sources
  • Remote management of power events
  • Output current capability up to 1000% for short periods
  • 19” rack cabinet
  • Hot swap option
  • Manufactured according to EC Directive EN 62310
  • 10-year spare part support2 year warranty


The APS – Single Phase Static Switches (STS) 1P allows for the instantaneous transfer of power source to the load. If one power source fails, the transfer time is so fast that the load never recognizes the transfer made, ensuring effective A+B redundant topology. The APS-STS 1P is ideal for an IT environment or Data Centre where the power source is critical. The compact design is suitable for mounting into 19” Data Cabinets.

The APS – STS 1P features high overload capability for short-time events. It operates with a single-phase output with two pole static transfer switches. An integrated interface allows for remote monitoring of input power sources. Ideal for power event logging and interrogating. The system can be deployed in a hot-swappable connection with the add-on connection tool.




Model DLT STS 2032 DLT STS 2063 SLT STS 2120
Nominal Current 32A 63A 120A
Electrical Data
Input Voltage 220/ 230/ 240 VAC 1P + N + G
Input Voltage Range 180 - 264 VAC (Ph-N)
Input Frequency 50 Hz/ 60 Hz
Input Frequency Range (Operational Range Adjustable) 46-54 Hz (For 50 Hz) 56-64 Hz (for 60 Hz)
Transfer Type Break Before Make
Transfer Methods Available Automatic/ Manual/ Remote
Transfer Control Synchron
With adjustable delay (non-synchron)
Zero current (non-synchron)
Transfer Time ≤ 4 msec for synchronous sources
≤ 10 msec for non-synchronous sources
Switching type 1 Phase + Neutral Switching (2-Poles)
Output current crest factor 3:1
Admissible overload 0 - 100% continuous
101 - 150% 1 minute
151 - 200% 10 seconds
> 200% 250 msec
Protections Output overload and short circuit protection, over temperature protection, backfeed protection
LCD panel and mimic Standard
Communication RS232 standard RS485
TCP/IP Connection Optional
Dry Contacts 3 Programmable relay outputs
Breaking current capacity (SW1, SW2) 10 kA
Environmental Data
Cooling Forced cooling (redundant fans)
Cooling air direction From front to rear
Cooling air temperature 0◦C - 40◦C
Storage temperature - 10◦C up to 50 ◦C
Relative humidity 90% max (non-condensing)
Protective degree IP20
Standards EN62310-1, EN62310-2
Max Operation Height 1000m at nominal current rating
Acoustic noise < 50 < 52 dBA
Mechnical Data
Weight (kg) 12 13 20
Dimensions 2U (19" rack), depth 530mm 2U (19" rack), depth 530mm
(Hot-swappable 630mm) (Hot-swappable 630mm)
Power cables connection Clip-on terminals (on real panel)

Product PDF

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