Products > Static Transfer Switch > ST Series ( ST50-ST150 (10U))



Fast transfer (typical) : 1.5~2ms(0 degree different),2~6ms(<90 degree different)
Geometrical increase in output availability
Compact size : 44cm x 44cm x 55cm (W*H*D)
Light weight : 24 ~ 30kg
High efficiency >99%
Easy installation : rack mount & terminal blocks
Easy start-up : use switch button
Fast repair : plug & play power module
Quiet operation : <50dB
Input phase difference acceptible
Single/three phase selectable
Voltage range +/-5,10,15,20% selectable
Frequency range +/-0.5,1.0,1.5,2.0,2.5 Hz selectable
Sensitivity low/medium/high selectable
Break before make transfer sequence
Manual/automatic transfer selectable
Manual/automatic return selectable
Manual bypass use breakers (with inter-lock)
Protect against incorrect breaker turn on
Accept harsh environment.
Customer design up to 1000A
Ultra-compact rack-mount
Static transfer switch
MODEL ST-50 ST-100 ST-150
Rated Current 50A 100A 150A
Rated Voltage 120/208 or 220/380 or 230/400 or 240/415 or 277/480V
Phases Single or three
Input Voltage Tolerance ±5,10,15,20%  selectable
Nominal Frequency 50 or 60 Hz  selectable
Input Frequency Tolerance ±0.5,1.0,1.5,2.0,2.5 Hz selectable
Phase Difference Between 2 Inputs 5,10,15,20 or don’t care selectable
Sensitivity Low / Medium / High selectable
Transfer Sequence Break before make
Transfer Mode Manual/Automatic
Return Inhibit Manual/Automatic
Transfer Time 1.5~3ms (0 degree difference)
3~6ms(<90 degree difference)
Efficiency(Full Load) > 99%
Ventilation Fan
Operation Temperature 0-40 ℃(32-104 ℉)
Operation Altitude <2000M ( derate 5% every 1000M)
Humidity 0~90% (non-condensing)
Audible Noise(At 1M) 50dBA
Standards EN62310-1(safety)  EN62310-2(EMC)
Dimension(W*H*D)mm 440*440*550 (10U)
Weight (kg) 24 26 30
Color Customer selectable
✽ All specifications mentioned above are subject to change without prior notice
Download Brochure
ST Series