AQY414SZ

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Solid State Relays (SSRs) are a reliable form of electromechanical switching that uses semiconductor-based technology instead of mechanical contactors. AQY414SZ is one of the most popular SSRs on the market due to its wide range of applications and working principles.

AQY414SZ is a zero-cross SSR with a triac output, designed to control AC loads with a maximum power rating of up to 400 VAC. It has a wide operating voltage range of 12-240 V and is designed for universal mains input voltage from 90 to 264 V. The SSR has a wide operating temperature range from -25°C to +70°C and is capable of switching loads up to 10A, making it suitable for a wide variety of applications.

The fundamental principle of operation for zero-cross SSRs is that the triac is triggered at the zero-crossing point of the AC sine wave. This ensures that no temporary inrush or surge currents are seen when the SSR is switched on. The AQY414SZ features an integrated opto-isolator circuit that triggers the triac at the zero-crossing point to provide reliable operation. A benefit of this type of SSR is that it does not need any additional cooling, as it uses minimal power. The AQY414SZ has an input impedance of 50KΩ to ensure reliable operation and to reduce the chances of false triggering due to electrical noise.

AQY414SZ is an ideal choice for a variety of applications, ranging from controlling solenoid valves and motors to light dimming and temperature controlling. It is particularly suited for applications where a quick response is required, as the SSR operates at speeds of up to 1000 Hz.

The AQY414SZ is also designed for use in safety-related applications. It features a zero-voltage turn-on and selectable zero/ randomly clamped off-state for extra safety. The SSR is provided with an adjustable and recyclable safety resistor, which helps to ensure that the SSR will not fail when switched on multiple times in a short period of time. It also has a built-in over-temperature protection that can be used to protect the SSR from excessive temperatures.

Overall, AQY414SZ is a robust and reliable SSR that is suitable for a wide range of applications. It has a wide operating voltage range and is designed for universal mains input voltage, making it suitable for use in a variety of applications. Additionally, the SSR is provided with a built-in opto-isolator circuit that triggers the triac at the zero-crossing point and provides a safe operation. The AQY414SZ also has a wide operating temperature range and a built-in safety resistor for extra safety.

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