Omron G3PE-225B Solid State Relay
The Omron G3PE-225B is a specific model of Solid State Relay (SSR) belonging to the G3PE series, which is specifically designed for high-speed, high-frequency switching of resistive loads, most commonly used for heater control applications.
As an SSR, it utilizes semiconductor components (like triacs or thyristors) instead of mechanical contacts to switch power. This design offers several significant advantages:
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Longer Service Life: Since there are no moving parts, the relay has an exceptionally long operational life compared to electromechanical relays.
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Fast Switching: It provides very fast switching speeds and operates silently.
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Zero Cross Function: The G3PE-225B typically incorporates a Zero Cross function, meaning it only switches the AC output on or off when the AC voltage waveform crosses zero. This minimizes electrical noise and surge currents, greatly reducing interference and extending the life of the heating elements.
Key specifications for the G3PE-225B include:
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Number of Poles: Two-Pole switching. This is required for controlling two phases of a three-phase system or switching both lines of a 240V single-phase system.
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Load Current Rating: 25 Amperes. This is the maximum continuous current the relay can switch.
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Load Voltage Range: It is designed to switch standard high-voltage AC loads, typically in the range of 200 V AC to 480 V AC.
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Control Voltage: The input required to activate the relay is typically a low voltage DC signal, often 5 V DC or 12 V DC.
In summary, the Omron G3PE-225B is a highly reliable, two-pole solid state relay optimized for precise, noise-free, high-frequency control of electric heating elements in industrial machinery and temperature control systems.
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