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  • Product name: KS40(AC Output) SSR
  • Product number: KS40(AC Output) SSR
  • Control Voltage: 5VDC 12VDC 24VDC
  • Load Voltage: 220VAC 380VAC
  • Load current: 2A 3A
  • Installation: PCB Mounting

● TRIAC output

● Photoelectric isolation

● LED status indicator

● Dielectric strength 2500V

● Printed circuit board mount

● Pin-compatible with standard package EMR

This SPST-NO,double in-line printed circuit board mount SSR provides AC output switching in a high density package. The relay's DC input is compatible with 5VDC,12VDC and 24VDC logic systems. The relays include a LED indicator to provide input status information. Rated load curent is 2A,3A, rated load voltage is 220VAC,380VAC. 

KS40A enables weak against strong electrical isolation and control, and level conversion. Can easily connect with computer and a variety of digital circuit interface.

Input Parameter (Ta = 25℃)

Control voltage range 5 (4 ~ 6)VDC
12 (9.6 ~ 14.4)VDC
24 (19.2 ~ 28.8)VDC
Must turn-on voltage 5 4VDC
12 9.6VDC
24 19.2VDC
Must turn-off voltage 1.0VDC
Max.reverse protection voltage 5 -6VDC
12 -14.4VDC
24 -28.8VDC
Max.input current 20mA


Output Parameter (Ta = 25℃)

Load voltage range KS40/口-24口口-口 (48 ~ 280)VAC
KS40/口-38口口-口 (48 ~ 440)VAC
Load current range KS40/口-口口2-口 (0.1 ~ 2)A
KS40/口-口口3-口 (0.1 ~ 3)A
Max.surge current (10ms) KS40/口-口口2-口 25Apk
KS40/口-口口3-口 120Apk
Max.I2 t for fusing (10ms) KS40/口-口口2-口 3.1A2s
KS40/口-口口3-口 78A2s
       leakage current 5mA
                Max.on-state voltage drop 1.5Vr.m.s.
Max.turn-on time Zero cross 1/2cycle+1ms
Random 1ms
                        Max.turn-off time 1/2cycle+1ms
  Max.transient voltage KS40/口-24口口-L 600Vpk
KS40/口-38口口-L 800Vpk
               dv/dt 100V/μs
                        Min.power factor 0.5


GENERAL (Ta = 25℃)

Dielectric strength(input to output) 2500VAC, 50Hz/60Hz, 1min
Insulation resistance 1000MΩ(500VDC)
Max.capacitance(input to output) 8pF
Vibration resistance 10Hz-55Hz 1.5mm DA
Shock resistance 980m/s2
Operating temperature -30 ~ 80
Storage temperature -30 ~ 100
Ambient humidity 45% ~ 85% RH
Unit weight Approx 18g

1.Soldering must be completed within 10s at 260 or less or within 5s at 350 or less.

2.If poor ventilation is unavoidable,the load current must be reduced.

3.Make sure that the polarity is correct when connecting, to avoid damage to the relay.

4.Please do not use the relay beyond the descriptions in the data sheet.

5.If the output transient voltage exceeds the norminal value, a varistor should be connected to the SSR output terminal in parallel to prevent the relay being breakdown. The recommended varistor voltage as follows:

Rated output voltage

Varistor voltage






 It is widely used in industrial automation field: DC motor, DC power supply, a variety of electromagnetic devices and intelligent instruments and so on, Suitable for harsh occasions of corrosive moisture and explosion proof.

Download attachments : KS40(AC)

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