CKRA2420R

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Solid State Relays (SSRs) are an integral part of modern electronics. They are used in a wide range of applications from communication and automation to entertainment and home automation. The CKRA2420R is a new line of SSRs from C&C Electronics and is a perfect fit for a variety of industrial applications. This article will discuss the application field and working principle of the CKRA2420R.

Application Field

The CKRA2420R SSR is specifically designed for industrial use. It is an ideal choice for applications such as robotics, automated production lines, instrumentation and measurement, building management systems, process control, and other industrial automation systems.

The CKRA2420R has a wide voltage input range from 10V to 48V and can switch both AC and DC current. It has a contact rating of 10A (250V AC), and is capable of controlling a wide range of loads, from resistive to inductive. It is also equipped with zero-crossing detection, which reduces contact arcing and prevents abrupt switch fluctuations.

Working Principle

The CKRA2420R is a solid state relay, which means it uses a semiconductor device (a triac) instead of a physical switch to control the flow of current. It works by connecting the AC load to the power supply in a way that is voltage and current independent. This means the output voltage and current depend only on the load impedance and not the input voltage or current.

The CKRA2420R also implements zero-crossing technology, wherein the switching action is triggered when the input voltage at the control terminal crosses a certain threshold. The threshold is typically near the zero-crossing point of the current waveform. When reached, the SSR will trigger the triac, completing the circuit and allowing current flow. This eliminates potential contact arcing and reduces flickering of the output.

The CKRA2420R also implements temperature protection circuitry. This prevents the SSR from operating at high temperatures, which can cause damage to the triac and create a hazardous condition. It also has an adjustable thermal overload cutoff, which can be used to limit the amount of current the SSR can carry and to limit heat buildup.

Overall, the CKRA2420R is a great choice for industrial applications that require reliable switching and protection of the system. Its wide input voltage range and zero-crossing technology make it an ideal fit for a variety of uses.

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