Single-Phase Solid State Relays SRH1 Series

Product Overview

The SRH1 series single-phase solid state relays are designed with integrated heatsinks, ensuring superior heat dissipation efficiency. The relays feature a standard top/bottom terminal layout, which simplifies the installation process. Voltage input type models are available in both zero cross turn-on and random turn-on configurations, while the current input type models offer phase control (equal power/equal phase) and cycle control (fixed/variable) options. The SRH1 series supports both DIN rail and panel mount installation methods, providing versatility and ease of use.

Applications

• Packaging Industry: Potato chip manufacturing and packaging process
• Packaging Industry: Container Sealing Machines
• Packaging Industry: Chip Bag Filling, Sealing, and Cutting
• Packaging Industry: Cup Sealing and Packaging
• Machine Tools Industry: Reflow Machines

Main Features

High Heat Dissipation Efficiency with Ceramic PCB

The SRH1 series relays utilize ceramic PCBs, which offer enhanced electrical isolation and thermal conductivity compared to traditional metal core PCBs, resulting in improved heat dissipation efficiency.

Input Indicator (Green LED)

An input indicator (green LED) is integrated into the unit, allowing for easy monitoring of the relay's operational status.

Flexible Installation Options

These relays are designed to accommodate both DIN rail and panel mount installation methods, offering flexibility in various industrial settings.

Voltage Input Type Models

• Zero Cross Turn-On: Switches ON/OFF at the zero-crossing point of the sine wave, minimizing surge and inrush currents, ideal for typical industrial loads.
• Random Turn-On: Activates immediately upon receiving the input signal and deactivates when the signal is removed, suitable for phase-control applications that require precise power regulation.

Note: The SRH1 series has been updated (SRH1-ㅁㅁㅁㅁ-N). Please check specification details before use.

Current Input Type Models

• Phase Control: Provides equal phase/equal power control using 4-20 mA current input, allowing precise regulation.
• Cycle Control: Offers both fixed and variable cycle control, optimizing the number of AC voltage cycles supplied to the load in proportion to the control input.

Note: The SRPH1 series has been updated (SRH1-Aㅁㅁㅁ-N). Please check specification details before use.

SSR Series Change Notice (SRPH1 => SRH1)

The single-phase analog (current) input type solid state relay series has been updated and replaced. Please note the model changes:

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

The SRH1 series offers a high dielectric strength of 4,000VAC, ensuring durable and stable performance in demanding environments.

High Heat Dissipation Efficiency with Ceramic PCB

Ceramic PCBs used in the SRH1 series provide superior heat dissipation due to their better electrical isolation and thermal conductivity compared to metal core PCBs.

Check Operation Status Easily

The integrated green LED input indicator allows users to quickly check the operation status of the relay.

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

Zero Cross Turn-On

This feature ensures the relay switches ON/OFF at the zero-crossing point of the sine wave, reducing surge and inrush currents, making it ideal for most industrial applications.

Random Turn-On

This model allows for the relay to activate immediately upon receiving the input signal, making it suitable for phase-control applications that require precise power management.

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

Phase Control

Utilizes 4-20 mA current input to provide equal phase/equal power control, ensuring accurate and reliable performance.

Cycle Control

• Fixed Cycle: Controls the number of full cycles supplied to the load every second, proportionate to the control input.
• Variable Cycle: Provides fast and accurate control by optimizing the number of AC voltage cycles supplied to the load, proportionate to the control input.

Various Installation Methods

The SRH1 series solid state relays offer flexible installation options, supporting both DIN rail and panel mount methods to suit different installation requirements.

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