PS7801-1A-F3-A

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Solid State Relays (SSRs) are a type of electronically-controlled switch that offer advantages of low cost and fast switching compared to mechanical relays. The PS7801-1A-F3-A is a 25A/250VAC solid state relay manufactured by Sunlord that is used in applications such as controlling heating elements, pumps, and motor starters. This versatile SSR is designed for industrial, commercial and residential applications.

The PS7801-1A-F3-A is a zero crossing switch, meaning that the output is triggered only at the zero crossover point of the AC wave. This minimizes excessive current, voltage and power losses, which can cause damage to the device. It includes built-in overvoltage and overcurrent protection, short-circuit protection, and improved reliability due to its superior surge immunity. The SSR also features an LED indicator light and is rated to switch up to 25 Amps at 250 VAC.

The PS7801-1A-F3-A utilizes an optically-coupled isolator consisting of a phototransistor and Light Emitting Diode (LED) pair to provide electrical isolation between input and output circuits. When the input signal is triggered, the LED emits light that triggers the phototransistor, which then in turn switches the output. The optically isolated output is voltage-free and cannot be damaged even if the input short-circuits. The PS7801-1A-F3-A is designed for operating temperatures up to 125C and with a maximum operating frequency of 10kHz.

The PS7801-1A-F3-A is widely used in a variety of applications. It is extensively used in home appliances such as washing machines and refrigerators to switch high-power heating elements. It is also commonly used in industrial heating applications, including controlling heating elements in thermostats, electro plating tanks, and soldering irons. Finally, it is often found in motor starter and pump motor control applications, where it can be used to switch the motors on and off.

In summary, the PS7801-1A-F3-A is a versatile and reliable solid state relay used in a variety of applications. It features a zero crossing switch, LED indicator light, and built-in protection features, allowing it to be safely used in high-power industrial, commercial and residential applications. With its wide temperature range and switching frequency, the PS7801-1A-F3-A is an excellent choice for a variety of switching needs.

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