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  • Product name: KS41(AC output) SSR
  • Product number: KS41(AC output) SSR
  • Control Voltage: 3~32VDC 4~15VDC 15~32VDC
  • Load Voltage: 240VAC 380VAC 480VAC
  • Load current: 3A 4A 5A
  • Installation: PCB Mounting

  • Input:DC control

  • Double SCR AC output or TRIAC AC output

  • Dielectric strength 4000V

  • Printed circuit board mount

  • Environmental friendly product(RoHS compliant)

KS41 pin-out is compatible with standard AC type I/O modules,and all models are available with random turn-on as an alternative to zero-cross turn-on.The KS41 SSR range offers a choice of 240VAC,380VAC,480VAC versions.Input Voltage specifications have 4VDC to 15VDC,15VDC to 32VDC and 3VDC to 32VDC.


Control voltage range                   D             3VDC to 32VDC
                1D             4VDC to 15VDC
                2D           15VDC to 32VDC
Must turn-on voltage                   D                             3VDC
                1D                             4VDC
                2D                           15VDC
Must turn-off voltage                               1.0VDC
Max.Input current                   D                             25mA
                1D                             40mA
                2D                             20mA



Load voltage range 48VAC to 280VAC(240VAC rated voltage)
48VAC to 440VAC(380VAC rated voltage)
48VAC to 530VAC(480VAC rated voltage)
Load current range 0.1A to 5A
Max.surge current(10ms) Triac output:120Apk
SCR output:250Apk leakage current 1.5mA
Max.on-state voltage drop 1.5Vr.m.s
Max.turn-on time Zero-cross 1/2 cycle+1ms
Random 1ms
Max.turn-off time 1/2 cycle+1ms
Max.transient overvoltage 600Vpk(at 240VAC rated voltage)
800Vpk(at 380VAC rated voltage)
1200Vpk(at 480VAC rated voltage) dv/dt 200V/μs
Min.power factor 0.5
Max.I²t(10ms) Triac output:78A²s
SCR output:310A²s



Dielectric strength(input-output) 4000VAC 50Hz/60Hz 1min
Insulation resistance 1000MΩ(at 500VDC)
Vibration resistance 10Hz to 55Hz 1.5mm DA
Shock resistance 980m/s²
Ambient operating temperature range -30 to 80
Ambient storage temperature range -30 to 100
Ambient humidity 45% to 85% RH
Unit weight Approx.15g

1.Soldering must be completed within 10s at 260 or less or within 5s at 350 or less.
2.The SSR case serves to dissipate heat.Install the relays so that they are adequately ventiated.If poor ventilation is unavoidable,reduce the load current by half.
3.The input circuity does not incorporate a circuit protecting the SSR from being damaged due to reversed connecting the input lines.
4.When using the KS41 series for an AC load with a peak voltage of more than the rated,connect the load terminials of the relay to a inrush absorber(varistor).For 220VAC the recommened varistor voltage is 470V;For 380 VAC,the recommened varistor voltage is 750V;For 480VAC,the recommened varistor voltage is 1100V.
5.Please do not use the relay beyondthe descriptions in the data sheet.

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