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Main Features

  • Improved power quality 
  • Noise reduction has been improved. 
  • Protection against power outages 
  • Redundancy in power 
  • Static switching that is automatic 
  • Static and mechanical transfer to input sources is simple. 
  • Power events can be managed remotely. 
  • Short-term output current capability of up to 1000% 
  • Rack cabinet 19″ 
  • Option for quick swapping 
  • 10-year spare part support manufactured in accordance with EC Directive EN 62310 
  • Two-year warranty 


The APS – Single Phase Static Switches (STS) 1P enables the transfer of power from the source to the load in an instant. If one of the power sources fails, the transfer time is so short that the load never notices the change, ensuring effective A+B redundant topology. The APS-STS 1P is ideal for use in an IT environment or data centre where power is critical. The compact design allows for installation in 19″ Data Cabinets. 

For short-term events, the APS – STS 1P has a high overload capability. It has a single-phase output and two-pole static transfer switches. Remote monitoring of input power sources is possible thanks to an integrated interface. Ideal for logging and interrogating power events. With the add-on connection tool, the system can be deployed in a hot-swappable configuration. 



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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  1. Abigail

    The APS Single Phase Static Switches keeps my equipment running smoothly during power outage making them my ultimate power partners.

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