• Product name: KS53 Single-phase SSR AC output
  • Product number: KS53 Single-phase SSR AC output
  • Control Voltage: 3~32VDC
  • Load Voltage: 240VAC 380VAC
  • Load current: 10A 15A 20A
  • Installation: Panel Mounting

● Built-in RC snubber circuit

● Photoelectric isolation

● Triac output

● Dielectric strength 4000V

● Zero-cross or random turn-on

● Panel mount

KS53 is a panel-mounted AC Solid State Relay, offer (3~32)VDC input voltage control, with outputs current at 10A,15A and 20A,load voltage range from 48VAC to 440VAC. With compact structure and small size. The relays provide 4000VAC opto-isolation, between input and output.With built-in RC snubber circuit. Encapsulation,thermally conductive epoxy.

Input Parameter (Ta = 25℃) 

Control voltage range (3 ~ 32)VDC
Must turn-on voltage 3VDC
Must turn-off voltage 1VDC
Max. input current 28mA
Max. reverse protection voltage -32VDC


Output Parameters(Ta=25℃)

  D-口口10  D-口口15  D-口口20 
Load voltage range                     D-24口口           (48-280)VAC 
                    D-38口口           (48-440)VAC 
Max.transient voltage                     D-24口口                   600Vpk 
                    D-38口口                   800Vpk 
Load current range(A)  0.1-10  0.1-15  0.1-20
Max.I2t(10ms,A2s)  78  144  312
Max.surge current(10ms) 100Apk  150Apk 200Apk 
Max.off-state 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
Min.off-state dv/dt 200V/μs


GENERAL (Ta = 25℃

Dielectric strength 2500VAC,50Hz/60Hz,1min,
input,output to base
input to output
Insulation resistance 1000MΩ(500VDC)
Operating temperature -30~ 80
Storage temperature -30~ 100
Unit weight Approx 35g

1. Please pay more attention to actual load current and ambient temperature for module selection. When the SSR is used for full load operation, we must install an adequate heatsink or take other effective cooling measures. When the ambient temperature is high, please refer to the curve of Max. Load Current vs Ambient Temperature for derating.
2.Apply heat-conducting silicon grease or a thermal transfer pad on the space between SSR and heat sink. Then, screw the heatsink firmly. In that case, it would keep the SSR from damaging by overheat.
3.Tighten the SSR terminal screws properly. If the screws are loose, the SSR will be damaged by heat generated from connections. Also, excessive screw mounting torque may damage relay internal components. We recommended screw installation torque as follows :M3 screw mounting torque of (0.58~0.98)N.m.
4. Please do not use the relay beyond the descriptions in the data sheet.

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Ad:No.130,Guankouzhong Road,

Jimei Dist,361023 Xiamen Fujian,China


Hotline:0592-7268263 6387007-8069

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