Selec Solid State Relay - SSR AC DC Relays
Selec solid state relays are electronic switching devices used to control electrical loads without mechanical contacts in industrial systems. They use semiconductor output elements such as triacs, thyristors, or MOSFETs with optocoupler isolation to switch AC or DC circuits, providing fast response, silent operation, defined leakage current, and electrical separation between control inputs and power outputs. Selection depends on load voltage and current ratings, control input type, switching mode, thermal dissipation, mounting style, ambient conditions, surge capability, and conformity with industrial electrical safety and control standards for continuous duty applications. They are used in control panels to switch heaters, motors, solenoids, and lighting circuits repeatedly during normal operation. Selec solid state relays are semiconductor based power switching modules, panel mounted or DIN rail mounted, classified by AC or DC load control and current rating, interfacing through optically isolated low voltage inputs to drive electrical loads within standardized industrial automation architectures.
Selec Solid State Relay:RSS-TD1A140ZP
DC Input: Ranges from 4 to 32V DC.
AC Output: Offers output voltage options from 24 to 330V AC and 48 to 480V AC.
Current Rating: Capable of handling a maximum load current of 40A.
Switching Type: Utilizes TRIAC for efficient switching.
Indication: Features LED indication for operational status.
Compact Size: Designed to be space-efficient for panel mounting.
Weight: Weighs approximately 88.7 grams.
Contact Configuration: Equipped with 1 Normally Open (NO) contact configuration.
Certifications: CE certified, ensuring compliance with relevant standards.
Selec SSR DC DC:RSS-TD1A125ZP
DC Input: Ranges from 4 to 32V DC.
AC Output: Provides two output voltage options: 24 to 330V AC and 48 to 480V AC.
Current Rating: Supports a maximum load current of 25A.
Contact Configuration: Features 1 Normally Open (NO) contact.
Output Device: Utilizes TRIAC for efficient switching.
Mounting: Designed for panel mounting.
Weight: Weighs 88.7 grams.
Certifications: CE certified for compliance with safety standards.
Selec SSR:RSS-TA1A125ZP
Control Input Voltage: Ranges from 90 to 280V AC.
Load Output Voltage: Options include 24 to 330V AC and 48 to 480V AC.
Maximum Load Current: 25A.
Contact Configuration: Features 1 Normally Open (NO) contact.
Output Device: Utilizes TRIAC for efficient switching.
Mounting: Designed for panel mounting.
Weight: 88.7 grams.
Certifications: CE certified, ensuring compliance with safety standards.
Selec SSR AC: RSS-TA1A140ZP
Control Input Voltage: Ranges from 90 to 280V AC.
Load Output Voltage: Options include 24 to 330V AC and 48 to 480V AC.
Maximum Load Current: 40A.
Contact Configuration: Features 1 Normally Open (NO) contact.
Output Device: Utilizes TRIAC for efficient switching.
Mounting: Designed for panel mounting.
Weight: 88.7 grams.
Certifications: CE certified, ensuring compliance with safety standards.
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Dealing Relay Brands: Omron, Minilec, EAPL, PLA
Selec’s Solid State Relay series provides robust solutions for electrical switching needs in various industrial applications. These relays include DC input AC Output models and AC Input AC Output variants, both featuring TRIAC as the output power device. They offer selectable output current ratings of 25A and 40A, and come in a compact 45x58mm size. Ideal for scenarios requiring reliable, low-maintenance switching mechanisms, these relays are equipped to handle input ranges from 4-32 VDC and 90-280 VAC, with output ranges of 24-330 VAC and 48-480 VAC. Designed to provide precise control and operational stability, Selec’s Solid State Relays ensure efficient electrical management across a broad spectrum of industrial settings.
How to select a solid state relay?
To select a solid state relay, first identify the load voltage type, either AC or DC. Assess the required load current, noting both the maximum and minimum currents. Consider the load type: resistive, inductive, or capacitive. Lastly, determine the input control signal needed, which could also be AC or DC. These criteria ensure the relay meets specific application needs.
Can SSR switch AC and DC?
Solid State Relays (SSRs) are designed to switch either AC loads or DC loads, but not both simultaneously. Each type of SSR is tailored to handle specific current typesโAC SSRs for alternating current and DC SSRs for direct current. They function similarly to mechanical switches by turning power on or off to connected devices.
What is the minimum voltage for SSR?
The minimum voltage required for a Solid State Relay (SSR) to operate effectively is typically around 75 VAC. This threshold, known as the trigger voltage, ensures that the SSR turns ON as expected. If the load voltage falls below this level, the SSR will not activate, potentially impacting performance and reliability of the system.
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