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AC to DC 10-120A Single Phase AC SSR Solid State Relay with LED indicator

  • NKDHxxxxxZD3 NKDHxxxxxZA2
  • NQQK


● Dielectric strength 4000V
● Photo isolation
● Zero cross or random turn-on
● Removable finger proof cover available
● Double SCR AC output
● Panel mount
● DC or AC control
● Built-in RC

Models explanation:
     1           2        3          4

NKDH – single-phase solid state relay (10 – 120А)
NKDM – industrial class solid state relay (100 – 500А)
NKTH – three-phase solid state relay (10 – 120А)
NKTR – motor reversing solid state relay (10 – 40А)
40 – load current 40А (10 – 500А)
48 – load voltage 24-480V AC, 38 – 24-380V AC, 23 – 5-220V DC
ZD3 – control signal type(swithing mode)
VA – variable resistor 220-560кОм/2Вт (phase control)
LA – analog signal 4-20мА (phase control)
VD – analog signal 0-10V DC (phase control)
ZD – control voltage 10-30V DC (switching at zero crossing)
ZD3 – control voltage 3-32V DC (switching at zero crossing)
ZA2 – control voltagte 70-280V AC (switching at zero crossing)
DD3 – control voltage 3-32V DC (DC voltage switching)


Loda voltage  Control Signal  Rated current
10A 25A 40A
480V AC  3-32 VDC NKDH1048ZD3 NKDH2548ZD3 NKDH4048ZD3
70-280V AC NKDH1048ZA3 NKDH2548ZA3 NKDH4048ZA3

Loda voltage  Control Signal  Rated current
60A 80A 100A 120A
480V AC  3-32 VDC NKDH6048ZD3 NKDH8048ZD3 NKDH100ZD3 NKDH12048ZD3
70-280V AC NKDH6048ZA3 NKDH8048ZA3 NKDH10048ZA3 NKDH12048ZA3

Technical specifications:

Model NKDHxxxxxZD3 NKDHxxxxxZA2
Load voltage 24-480VAC
Control voltage 3-32V DC 70-280V AC
Current consumption in control circuit 3-25mA ≤12mA
Voltage ON/OFF 3V DC / 1V DC 70V DC / 10V DC
Peak voltage  1000V AC 
Voltage drop in load circuuit ≤1.6V AC
Leakage current(off-state) ≤10mA
Switching time ≤10mS
LED indication yes
Dielectric strength 2500V AC (1min)
Insulation resistance 500MΩ with 500V DC
Operating temperature -30°c ~ +75°c
Relative Humidity ≤95%(non-condensing)
Dimensions 57.4x44.8x32mm
Mounting method Screws on
Weight ≤135g

Outline dimensions & Wiring diagram:
single-phase solid state relay nqqk



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