DRA3P48A42

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Part Status:	Active

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Introduction to DRA3P48A42

The DRA3P48A42 is a solid-state relay—an electronic switch that connects or disconnects a circuit upon demand or in response to a control input—manufactured by Omron. The DRA3P48A42 is part of the DR family of self-contained solid-state relays, or SSRs, from Omron that are designed for high performance and long-term reliability. This article will describe the application field and working principle of the DRA3P48A42.

Application Field

The DRA3P48A42 is a 3-phase, AC output SSR that is suitable for a variety of applications. It is especially well-suited for use in domestic, commercial, light industrial, and food-processing applications where flexibility, control, safety, and affordability are important.The DRA3P48A42 has a rated output optical zero crossing current of 0.7A (at 25°C) and a maximum output optical zero crossing current of 0.9A (at 25°C). It is designed to operate with an input voltage of 12-24V AC/DC.In addition, the DRA3P48A42 has a wide temperature range and is able to operate at temperatures between -40°C and +85°C. This makes it suitable for a wide range of applications and environments. Furthermore, it can be operated at a maximum frequency of 100kHz.

Working Principle

The DRA3P48A42 uses a zero-crossing-based input and output structure to control an AC load. When the input voltage is applied, the output current flows through the relay until the zero-crossing point of the AC input voltage is reached. At this point, the output current is cut off, and the cycle begins again.The DRA3P48A42 is designed with a high insulation resistance (greater than 100MΩ) between the input and output circuit. This reduces the possibility of leakage current and helps ensure a safe and reliable operation.In addition, the DRA3P48A42 is designed with an anti-surge circuit that helps protect the relay from damage due to voltage surges. This feature ensures that the relay can withstand sudden voltage changes and will not cause any damage to the circuit.

Conclusion

The DRA3P48A42 is a 3-phase, AC output SSR from Omron that is designed for high levels of performance and reliability. It is suitable for a variety of applications and has a wide temperature range, as well as an anti-surge circuit for protection. The DRA3P48A42 uses a zero-crossing-based input and output structure to control a load and is designed with a high insulation resistance to reduce the possibility of leakage current.

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