SRH2/SRH3 Series

Three-Phase Solid State Relays (Integrated Heatsink Type)

The SRH2/3 series three-phase solid state relays are integrated heatsink types, which are removable. The solid state relays can control 2-phase or 3-phase loads and feature two mounting hole types for compatibility with various types of heatsinks. The series also features alarm output for safe operation, and are also available in 24 VAC low voltage models. Select models feature high dielectric strength of up to 4000 VAC and integrated heatsink models can be mounted on to both DIN rails and panels.

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Description

Features

  • Two mounting hole types and sizes
  • Alarm function (overheating) : Alarm output indicator (red LED), disconnect standard output, alarm output
  • High dielectric strength : 4000 VAC (select models)
  • Rated input voltage : 4-30VDC, 24VAC, 90-240VAC
  • Rated load voltage : 24-240VAC, 48-480VAC
  • Rated load current : 15A, 30A, 40A, 50A, 75A
  • High heat dissipation efficiency with ceramic PCB and integrated heatsink
  • Zero cross turn-on and random turn-on models available
  • Input indicator (green LED)
  • Various mounting methods (DIN rail, panel)

    *DIN rail mounting not available for 50A and 70A load current models

Two Mounting Hole Types
Alarm Output
Low Voltage Input
Dielectric Strength (Select Models)
Removable Heatsink
Screw Mount
DIN Rail Mount

Details

Two Mounting Hole Types

Two different mounting holes types and sizes allow flexible installation and mounting on various types of heatsinks.

Two Mounting Hole Types

Built-In Alarm (Overheating) Function

In case of overheating due to product damage or overcurrent, the alarm output turns on and the red LED indicator provides safer operation for users.

Alarm Indicator(Red LED), Signal Light

Low Voltage Models Available/Dielectric Strength Up to 4000 VAC

24VAC low voltage models are available for flexible application in diverse settings. Select models feature high dielectric strength of up to 4000VAC.

24VAC - LOW VOLTAGE, Dielectric Strength - 4,000VAC(50A, 75A models only)

Removable Heatsinks

The integrated heatsinkscan be removed or attached as need, making it easier to replace in case of damage or failure

* When choosing heatsinks, please refer to the “SSR Derating Curve” section of the catalogue or instruction manual, * Heatsinks are not provided or sold separately

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

Zero Cross Turn-On
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
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 control of power.

 

Status Indicators

The input indicator (green LED) allows users to quickly identify the operation status of the relays.

Status Indicators

Various Mounting Methods

The integrated heatsink models support both DIN rail mount and panel mount methods for higher installation flexibility.

Various Mounting Methods

Applications

Solid state relays used for temperature control of SMT machinery

Solid state relays used for temperature control of SMT machinery

Other Model