CKRD2420ER

Solid state relays (SSR) are commonly used in industry operations for automation and motor control in industrial-scale operations, and careful consideration is required when choosing an SSR. The CKRD2420ER is a 24V AC/DC, 3.5A SSR with a single-phase output designed for applications in harsh environments. It can perform switching operations between 0.2A and 3.5A and has a microsecond-level response time.

Applications

The CKRD2420ER was designed to be compatible with various applications, offering reliability and performance in extreme conditions. Operating at a temperature range of -45℃ to 85℃, this SSR is perfectly suited for demanding industrial environments and is an ideal choice for off-board applications, such as brewery machines, wind power systems, and air conditioning. It can also be used in modern equipment, such as automotive assembly and medical diagnostic equipment.

Features

The CKRD2420ER has distinctive features that set it apart from conventional SSRs, making it suitable for handling high-frequency and high-power operations. Provided with input protection up to ±500V, the SSR can be exposed to high voltage without risk of malfunction. Moreover, it is can withstand severe environmental conditions such as having an enclosure rated IP20 and an impact of 10G for up to 11ms. This SSR also comes with an impressive overload/short-circuit protection of 1.5 times its rated value.

Working Principle

At the heart of the CKRD2420ER is a semiconductor, usually an insulated gate bipolar transistor (IGBT) or a triac, which acts as a switch between the input and output. When a voltage is applied to the gate of the switch, the semiconductor switches on, allowing current to flow, and when the voltage is removed, the switch is turned off. The semiconductor in this SSR is activated by an optically isolated gate driver, which increases the input-to-output isolation voltage to 6,000V per minute. This means that the SSR offers superior electrical isolation between the input and output, reducing the chances of short circuits or surges.

Conclusion

The CKRD2420ER SSR offers excellent performance in harsh environments, with features such as EMC compliance, high-voltage protection, low-power consumption, and an impressive overload/short-circuit protection of 1.5 times the rated value. The SSR is suitable for AC/DC input and offers fast response times of up to 1 microsecond, making it ideal for applications in the wind power systems, medical equipment, and other industries that require reliable, long-lasting performance in extreme conditions.