Three-Phase Solid-State Relay Assemblies & Contactors
HBControls three-phase power controllers & contactors are solid-state relays pre-assembled onto either a DIN or panel-mount heat sink. Each assembly is ready to use and pre-derated for its maximum allowable load current in a 40°C ambient temperature, eliminating the need for thermal calculations, heat sink selection, and in-house assembly.
Solid-state relays and contactors, containing no moving parts, offer several advantages over traditional contactors and electromechanical relays:
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Significantly longer life expectancy
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Silent operation, free from acoustical noise
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Low-current input circuit
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Resistance to shock and vibration
Explore Products by Current Rating & Mounting Style
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.