SRHL1 Series

The SRHL1 series single phase solid state relays feature integrated heatsinks for excellent heat dissipation efficiency. The left/right terminal layout provides more flexible installation options. The SRHL1 series is available in zero cross turn-on and random turn-on models, and also feature alarm functions for safer operation. The units support both DIN rail mount and panel mount methods.

Categories: ,


  • Rated input voltage : 10-30 VDC, 90-240 VAC
  • Rated load voltage : 24-240 VAC, 48-480 VAC
  • Rated load current : 10 A, 15 A, 20 A, 25 A, 40 A
  • Zero cross turn-on, random turn-on models available
  • Input indicator (green LED)
  • Alarm function (overheating)
    – Rated load voltage 10 A, 15 A, 20 A, 25 A : alarm indicator (red LED)
    – Rated load voltage 40 A : alarm output, alarm output indicator (red LED)
  • DIN rail mount or panel mount installation

Left/Right Terminal Layout

The SRHL1 series features a left/right terminal layout offering more flexible installation options. Single phase solid state relays from Autonics is also available in top/bottom terminal layout for application in diverse user environments.

Zero Cross Turn-On/Random Turn-On Models Available

Zero Cross Turn-On

The relay switches ON/OFF when the voltage reaches the zero-crossing point of the sine wave. This method minimizes surge current and inrush current, and is ideal for most common industrial loads.

Random Turn-On

The relay opens or turns on immediately when the input signal is applied and turns off when the signal is removed. This method allows phase-control applications requiring precise power control.

Alarm Function (Overheating)

The alarm output and indicator (red LED) turns on in case of overheating due to product damage or overcurrent, providing safer operation for users.

※ Available models: SRHL1-1240/4240/1440/1440R/4440

Check Operation Status

Users can easily check the operation status of the solid state relays through input indicators (green LED)

Various Installation Methods

The solid state relay units support both DIN rail mount and panel mount methods providing more installation flexibility








Title Type Size
SRHL1 Series (Instruction Manual) application/pdf 518 KB
SRHL1 Series (Catalog) application/pdf 583 KB
SRH1/SR1/SRC1/SRPH1/SRS1 Series (CE Mark) application/pdf 583 KB