CS136TR Relays

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Solid State Relays

A Solid State Relay (SSR) is an electronic switching device which comprises a semiconductor circuit and opto-isolator in one package. They are also known as opto-coupled relays and have been in common use since the 1970s. More recently, they have become the preferred way to control electrical devices such as motors, heaters, and lights within industrial automation applications due to their high speed switching capabilities, long life expectancy, and immunity to electrical interference.

The most common type of SSR is the CS136TR, which is a two-wire, zero-crossing, latching relay. It is the preferred choice for controlling varying loads, such as the heating elements in industrial ovens or lighting loads, due to its high accuracy and repeatability. It also offers safety benefits, as it can be retrofitted into existing installations without the need for complicated wiring or additional protective devices. This makes it ideal for use in industrial control systems for low voltage applications.

The CS136TR SSR is composed of an opto-isolator and a thyristor in a single package. The opto-isolator is an LED mounted inside a phototransistor, which is used to control the output circuit. The thyristor is a three-terminal semiconductor device which is used to switch the output. The input voltage is applied between the LED (collector) and the thyristor (emitter). When the LED is activated, it sends a current to the base of the thyristor, which in turn switches on the output.

The CS136TR SSR has a wide range of advantages over traditional relays. As mentioned previously, it offers high accuracy and repeatability, which makes it ideal for controlling specific loads. Its latching design also prevents unintentional actuation, meaning it remains in its current state until it is manually reset. In addition to this, the SSR has a long life expectancy and requires very little maintenance, making it an ideal choice for industry automation applications.

The CS136TR working principle is simple and straightforward. It works by turning on and off the output based on a low-level input voltage. When the input voltage is below the activation threshold, the relay is off and no output occurs. When the input voltage is above the threshold, the relay is on and produces an output voltage. This type of level switching is used in many automated systems. The most common application field of the CS136TR SSR is in industrial heating, ventilation, air conditioning, and lighting systems.

The CS136TR is also suitable for use in control applications, such as motor speed control and other industrial automation processes. It can be used in a variety of environments, from industrial applications to residential and commercial ones. For safety reasons, it is also often used with a backup protection system, such as a fuse or circuit breaker, in order to detect and shut off any current surges.

In conclusion, the CS136TR is a high-performance solid state relay which is commonly used in industrial automation applications. Its two-wire latching design and opto-isolator circuit offer superior accuracy and repeatability, and it has a long life expectancy and requires very little maintenance. It is an ideal solution for applications requiring precision control of varying loads, such as industrial heating, ventilation, air conditioning, and lighting systems.

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