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SRH2/SRH3 Series - Three-Phase Solid State Relays (Integrated Heatsink Type)
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.
Main 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
Two Mounting Hole Types
Two different mounting holes types and sizes allow flexible installation and mounting on various types of heatsinks.
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.
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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.
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Removable Heatsinks
The integrated heatsinkscan be removed or attached as need, making it easier to replace in case of damage or failure
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Zero Cross Turn-On/Random Turn-On Models Available
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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.
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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.
Various Mounting Methods
The integrated heatsink models support both DIN rail mount and panel mount methods for higher installation flexibility.
Applications
Solid state relays used for temperature control of SMT machinery
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