DRA3R40C4

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Solid State Relays (SSRs) are a type of electronic switching devices. They are used when reliability and long life are paramount. The DRA3R40C4 is a four-channel, 5 A, SSR that is designed to work in a range of different application fields. The following sections discuss the application fields and the working principle of the DRA3R40C4.

Application Fields

The DRA3R40C4 is suitable for two types of applications: AC and DC. For AC applications, the DRA3R40C4 can be used for switching lights, small motors, AC power supplies, and other high-power loads. It is also suitable for controlling the operation of cookers, heating elements, and small appliances. For DC applications, the DRA3R40C4 can be used for switching DC lighting, motors, power supplies, and other DC current-carrying components. Furthermore, it is suitable for use in connection with sensors and electronic switches.

Working Principle

The DRA3R40C4 is an optically-isolated SSR. It consists of a semiconductor switch that is triggered by a photo-transistor. When the switch is triggered, it turns on and off the connected circuit. The switch is controlled by a pulsed voltage that is supplied to the SSR\'s control terminal. When the control pulse is applied, the photo-transistor is activated, causing the semiconductor switch to turn on. When the control pulse is removed, the photo-transistor is deactivated, and the semiconductor switch is turned off. This is the working principle of the DRA3R40C4.

The DRA3R40C4 has an operating temperature range of -25°C to 55°C, and an input signal range of 4 V DC to 50 V DC. It is designed to be compliant with the EN61000-4-2 EMC standard, making it suitable for use in a variety of industrial and commercial applications. In addition, the DRA3R40C4 features a low on-state resistance of only 0.0025 Ohm and a high-off-state leakage current of less than 1 μA.

In summary, the DRA3R40C4 is a four-channel, 5 A, optically-isolated, SSR. It is suitable for use in both AC and DC applications, and is designed to be used in a range of different environments. Furthermore, it features a low on-state resistance and high-off-state leakage current. It is an excellent choice for a variety of light-duty power switching applications.

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