AQW214S

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Solid State Relays (SSRs) are an important component of power electronic systems. These devices are used to control the current, voltage, and power of electronic systems, allowing for automated power regulation and protection from electrical malfunctions. The AQW214S is a type of SSR which is used for a variety of industrial, automation, and HVAC applications.

The AQW214S is a two-pole, double-throw (DPDT) SSR with an integrated thermal overload monitoring device. This device is designed to protect circuits and components against over-current and overheat conditions. The AQW214S features a low voltage dropout (LDO) relay design which offers tight control of on-state resistance and when driven by a 5V logic signal, provides a fast switching speed of 0.5 ms.

The AQW214S is a latching solid state relay meaning that it latches the load in either the on or off state depending on the logic signal. This feature eliminates the need for a gate power supply, making it easy to implement in industrial automation systems. The AQW214S is also equipped with an integrated over-current alarm circuit which will shut off the relay when the current limit is exceeded.

The AQW214S is a robust and reliable SSR, having an operating temperature range from – 30°C to +85°C, and a maximum continuous current rating of 22 Amps. This makes it suitable for applications such as motor starters, HVAC systems, and general-purpose circuit protection. Additionally, the AQW214S is RoHS compliant and CE marked, ensuring operation in safety-rated applications.

The working principle of the AQW214S is based on thermal overload protection. When the current through the load exceeds the set limit, a thermistor placed at the transistor junction senses the temperature rise and promptly shuts off the relay. This ensures that the circuit is not damaged due to excessive current and temperature. The AQW214S can also be programmed to detect the overload current level, allowing for flexible and reliable protection.

In conclusion, the AQW214S is a latching SSR which provides a reliable and cost-effective way to regulate and protect circuits from electrical faults. It features an integrated thermal overload protection and a fast switching speed for a wide variety of applications in industrial, automation, and HVAC systems. The AQW214S also carries RoHS compliance and CE certification, helping to ensure safe operation in any installation.

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