Solid-State Relays
Solid state relays (SSRs) are electronic switches that use components like SCRs, TRIACs, MOSFETs, or transistors, offering longer lifespans than mechanical relays due to their lack of moving parts. Ideal for temperature control applications, SSRs provide fast, precise duty cycles and use optocouplers for input-output isolation. Without coils, they prevent voltage spikes, making them highly compatible with the low signal outputs of temperature controllers.
-
Long Life: Solid-state relays (SSRs) feature no moving parts, eliminating mechanical wear and tear. When operated within their specified parameters, SSRs can reliably perform multiple operations per second, maintaining functionality for millions of hours.
-
Silent Operation: SSRs do not generate acoustical noise when they turn on or off, making them the preferred solution for many commercial and residential applications.
-
Shock & Vibration Resistant: The lack of moving parts makes SSRs an ideal solution for harsh industrial environments susceptible to shock and vibration.
-
Fast Switching: Zero-crossing solid-state contactors respond in less than half of an AC cycle, making them ideal for resistive heating loads that require precise temperature control.
Explore Products by Brand
Benefits of Solid-State Relays & Contactors
Long Life & Reliability:
Solid-state relay assemblies and contactors feature no moving parts, eliminating mechanical wear and tear. When operated within their specified parameters, SSCs can reliably perform multiple operations per second, maintaining functionality for millions of hours.
Silent Operation:
Solid-state relay assemblies and contactors do not generate acoustical noise when they turn on or off, making them the preferred solution for many commercial and residential applications.
Shock & Vibration Resistant:
The lack of moving parts makes solid-state relay assemblies and contactors an ideal solution for harsh industrial environments susceptible to shock and vibration.
Fast Switching:
Zero-crossing solid-state contactors respond in less than half of an AC cycle, making them ideal for resistive heating loads that require precise temperature control. Instantaneous output models can respond within 100 microseconds.
Technical Resources
MTBF: Understanding the Life Expectancy of Solid-State Relays & Contactors:
This article explains the enhanced life expectancy of solid-state relays and contactors, along with the criteria used to determine MTBF (Mean Time Between Failures) in typical applications.
Over Voltage Protection for Solid-State Relays:
Discover how MOVs and TVS diodes from HBControls can safeguard your solid-state relays from voltage transients, ensuring long-lasting performance and reliability in challenging environments.
The Variable Load Current Rating of Solid-State Relays:
Learn how heat management affects solid-state relay ratings, and discover practical tips for selecting the right heat sink. Simplify the process with HBControls’ pre-assembled solutions, eliminating the need for complex thermal calculations.
How to Bench Test a Solid-State Relay or Contactor:
Learn practical methods for testing solid-state relays and contactors, whether you're troubleshooting, designing, or simply curious. This guide covers key differences from electromechanical relays and step-by-step instructions for ensuring proper functionality.
Mercury Displacements Relays vs. Solid-State Relays & Contactors:
Discover the pros and cons of solid-state solutions versus traditional mercury displacement relays, and explore the benefits of switching to a more eco-friendly power switching option.