HPS-iSTS-F4 Wall Mount – Outdoor Static Transfer Switch 250A max

Brand: Static Power

This product is available globally.
  • Fuse Protected
  • Wall Mounted
  • IP54 – 55°C ambient
  • Up to 1-Phase/250A and 3-Phase/125A
  • Manual and automatic transfers selection



Single & Three Phase & Wall Mount Static Transfer Switch

Superior in performance and ruggedness, the iSTS F3 is designed for tough environments where power availability is essential.

Main Features

  • Natural cooling, no fan
  • IP54, 55°C ambient
  • Compact
  • Single or 3-phase/3 or 4-pole
  • Built-in transient voltage protection
  • UPS Eco-Mode compatible
  • RCD site compatibility
  • Safe asynchronous source transfers
  • Very high MTBF (>800,000 hours)
  • Back feed protection contactors
  • Manual and automatic transfers selection
  • Preferred source selection
  • Visual and sound alarms
  • Bi-colour LED mimic
  • Maintenance Bypass pad-lockable
  • Voltage free general alarm contact


  • PLCs
  • Computers
  • Security & Lightning
  • CNCs & Robotics
  • Motors


  • Stainless steel enclosure
  • Ethernet module for LAN/TCP, Modbus & SNMP


Specifications Table

Current rating1Ph:250A max 3Ph: 125A max
Voltage ratingAll region-specific voltages ±10%
TypeSingle phase, 3-Phase/3-Pole or 3-Phase/4-Pole
Frequency50Hz and 60Hz, ±10% – Auto detection
Transfer typeBreak-Before-Make zero current transfer by Thyristors / SCR
Synchronous break time<1ms – up to ¼ cycle
MTBF>800,000 hours
Maintenance bypass3-position overlapping, no-break CAM switch
IsolationInputs and outputs breakers
DisplayBi-colour LED mimic decal
InterfacePreferred supply selection, Source transfer selection and Alarm cancel button
Contact5 Pre-defined Voltage free change-over status indicators, Form C
EthernetLAN – optional
Input terminationM8/M10 bolted terminals
Output terminationM8/M10 bolted terminals
Dimensions H x W x DH700 x W500 x D280 mm
Temperature0 – 45°C
IP ratingIP54
DetectionDigital: <1ms
Asynchronous break timeVt proportional up to 12ms, 0
0°to 180 180°
Loading0 – 100% @55°C ambient
Device ratings300A RMS, 1600V, 5kA 1 cycle
Overload @55°C ambient125% for 10min
150%  for 30s
200% for 1s
300% for 0.1s 5kA for 1 cycle
Fault current setting300% peak with load fault transfer inhibit
Safe install environment20kA, 300A internally fused
Protection300A fuses – aR -NGT00
Power factorNo practical limit
Max THDV10% – Max allowable source voltage distortion
Crest factor3 : 1
dV/dt max1000V/μs
Humidity @40°C ambient5 – 95% non-condensing
Regulatory approvalsIEC 62310-1,2,3 – IEC 60950 – IEC 61000-6-1,2,3,4 – CE – RCM – UL Capable – RoHS
Standard warranty24 months offsite repair or replacement policy

Series Table

Model NumberPhases/PolesMax Current
HPS F4 1P2 01001-Phase/2-Pole100A
HPS F4 1P2 01251-Phase/2-Pole125A
HPS F4 1P2 01601-Phase/2-Pole160A
HPS F4 1P2 02001-Phase/2-Pole200A
HPS F4 1P2 02501-Phase/2-Pole250A
HPS F4 3P4 01003-Phase/4-Pole100A
HPS F4 3P4 01253-Phase/4-Pole125A
HPS F4 3P4 01603-Phase/4-Pole160A

View Datasheet

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