PS7200H-1A

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Solid State Relays (SSRs) are typically electrical switch components that may be used in a variety of applications. The PS7200H-1A make use of a Triac encapsulated in an isolated package. This type of SSR is seemingly less expensive than some other model types, plus it is also relatively easy to install and maintain. To make the best use of the device, an understanding of its application field and working principle is helpful.

The application field of the PS7200H-1A is quite wide and usually involves controlling an AC line voltage of either 120VAC or 240VAC. Their most common uses include motor control, machine tool control, temperature control, indoor lighting control, and HVAC control. The device can also be used in applications such as contactors or over-current protection for single or three phase circuits.

When it comes to the working principle of the PS7200H-1A, its simple yet effective design makes it ideal for most applications. The core of the device is a metal oxide-based triac. This triac is then enclosed in an electrically isolated package to help control the electrical parameters and protect it from heat. The triac’s metal oxide construction allows it to remain in a low-power state, enabling it to remain “semi-on” when the line voltage is applied to it. As the voltage is increased, the triac gradually increases its conduction, and it will eventually reach a maximum current when the voltage reaches a certain point. It then stays in this state until the voltage is reduced, at which point the triac returns to a low-power state.

The PS7200H-1A has a rated control current of 250mA and a maximum voltage rating of 250VAC. It is also designed to operate between 0°C and +60°C. The device has a power consumption of less than 1 Watt, and its switching frequency is rated at 400Hz with a minimum load current of 10mA. It has a high dielectric strength of at least 4kV, and a maximum response time of 50ms.

In terms of its control inputs, the PS7200H-1A has three options: Logic Level, Optocoupler, or Transistor input. Logic level allows the device to be operated via a digital logic signal such as a 0V/5V or 3.3V signal. Optocoupler input allows for photo-coupled isolation, ensuring that the devices stays isolated from dangerous voltage levels while still performing its intended function. Finally, the Transistor input is used for direct connection to an electronic switch.

The PS7200H-1A is a reliable and economical solid state relay that can be used in a wide variety of applications. Its ability to switch AC line voltages of up to 250VAC makes it ideal for motor control, machine tool control, temperature control, indoor lighting control, HVAC control, over-current protection, and many more applications. Its simple working principle and its numerous control options makes it easy to install, and its low power consumption and high dielectric strength makes it a safe and reliable choice for any application.

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