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Understanding the SSRs (Solid-State Relays): The Switching Device

What exactly is an SSR? This electrical device can be elaborated on as a non-contact switch entirely composed of a solid-state electrical-element, which can go on to drive a high-current load with the help of a small control signal. It can complete the task of switching on and off with negligible contact and also no spark due to the switching characteristics of an electrical element (i.e. semiconductor components like switch transistor, triac and so on) present.

Using a solid state relays over electromagnetic relays results in the following advantages –

It has widely been employed used in a wide range of applications like the CNC machine, remote control system, and industrial automation devices, chemical industry, medical equipment, security system, amongst so many others.

Solid State Replay Features 

The load capacity of different solid state relays is significantly impacted by the ambient temperature and its own temperature increase. In the installation process and usage, good heat emission conditions should be guaranteed to ensure peak performance. In general, for the SSR with rated operating current greater than 10A, radiators should be employed. For more than 100A, a radiator along with a fan should be employed also to facilitate forced cooling. During the installation process, it must be ensured that there is good contact between the bottom of the relay and the radiator, along with a sizeable amount of thermal grease coated appropriate to achieve the best cooling effect.

#SchneiderElectric is a leady brand in the domains of electrical and power management which is reliable when it comes to electric relays like a solid-state relay, contactors, contactor relays, and protection relays.

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