ASSR-4111-001E

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Solid State Relays (SSRs) are electrical switches that are used to control the flow of current in a circuit by using opto-electronic components such as thyristors, triacs and BJTs. They replace the traditional relay and offer advantages such as a faster switching speed, higher efficiency, greater robustness, and up to 20x less power consumption than mechanical relays. The ASSR-4111-001E is an example of a solid state relay, which is designed for high-current load switching applications. This article provides an overview of the application field and working principle of the ASSR-4111-001E.

The ASSR-4111-001E is a single-channel bidirectional solid state relay that can be used to switch up to huge 600 A load current with AC as the power source. It is suitable for various high-power load switching applications such as HVAC systems, industrial motors, pumps, compressors, and temperature control in water tanks. The ASSR-411-001E has an operating temperature range of -40°C to +105°C, and have been UL, CE, and TUV certified.

The ASSR-4111-001E operates on the principle of opto-electronic isolation. It consists of two components: an LED side and a triac side. The LED side is a high-power LED that produces light when energized by the control signal. The triac side has a photosensitive semiconductor that is sensitive to the light produced by the LED. When the LED turns on, it produces light which is then used to activate the triac side. The triggered triac then turns on and allows current to flow through the load.

To further ensure the reliable switching of devices, the ASSR-4111-001E incorporates optical noise suppression. This filter reduces high frequency noise voltage, limiting the number of false switching of the relay. In order to protect against output short circuit, the relay is equipped with a current limiting feature. The current limiting feature is capable of limiting the output current at around 0.25 times of the rated current.

The ASSR-4111-001E also has a range of protection features to protect the relay, the user, and the connected circuit. These features include reverse polarity protection, overvoltage protection, and thermal shutdown. The relay also has a temperature detection function, which helps to protect against over-temperature conditions, and an over-current protection feature that cuts off the output when the current reaches a certain level.

All in all, the ASSR-4111-001E is a reliable and robust solid state relay that can be used for various high-power load switching applications. Its features such as optical noise suppression, current limiting, and protection features make it a great choice for applications where reliability is a must.

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