Autonics Solid State Relays SRH1 Series

The Solid State Relays for Industrial automation.

The SRH1 series single phase solid state relays feature integrated heatsinks for excellent heat dissipation efficiency, and the standard top/bottom terminal layout allows easy installation. The voltage input type models are available in zero cross turn-on and random turn-on models. The current input type models offer both phase control (equal power/equal phase) and cycle control (fixed/variable) options. The units support both DIN rail mount and panel mount methods for easy installation.

Main Features

• High heat dissipation efficiency with ceramic PCB
• Input indicator (green LED)
• DIN rail mount or panel mount installation

[Voltage input type]

• Zero cross turn-on, random turn-on models available

[Current input type]

• Phase control (equal phase/equal power) and cycle control (fixed/variable)
• High dielectric strength: 4,000 VAC

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SSR Series Change Notice (SRPH1 => SRH1)

Single phase analog (current) input type solid state relay series has been changed/replaced.

The SRH1 series which is a popular Solid State Relays series from Autonics company, is also available in various other user settings.

SSR Series Change Notice (SRPH1 => SRH1)

Previous models	New models
SRPH1-A220	SRH1-A220-N
SRPH1-A230	SRH1-A230-N
SRPH1-A260	SRH1-A260-N
SRPH1-A420	SRH1-A420-N
SRPH1-A430	SRH1-A430-N
SRPH1-A460	SRH1-A460-N

4,000 VAC High Dielectric Strength (Current Input Type Models)

The high dielectric strength of 4,000VAC provides durable and stable performance.

High Heat Dissipation Efficiency with Ceramic PCB

Ceramic PCBs offer better electrical isolation and thermal conductivity compared to metal core PCBs, offering better heat dissipation efficiency.

Check Operation Status

Easily check the operation status of the unit with the input indicator (green LED).

Zero Cross Turn-On/Random Turn-On Models Available (Voltage Input Type)

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.

Phase Control and Cycle Control with Analog Current Input (Current Input Type)

Precise control is possible through phase control (equal phase/equal power) or cycle control (fixed/variable) using 4-20 mA current input.

1. Phase control
2. Output waveform of phase control
3. Phase equality division type

Cycle control

Fixed cycle

Controls continuously the number of full cycle which is supplied to load every 1sec. by being proportional to control input(4-20mA).

Variable cycle

Controls fast and accurately the subject with optimized the number of AC voltage cycle which is supplied to load by being proportional to control input. (4-20mA).

Various Installation Methods

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

 SRH1 (Voltage-input) Series PDF Catalog  SRH1 (Current-input) Series Catalog