Solid State Power Switching Devices

A solid state relay or contactor ssr or ssc is an electronic component that switches power ac or dc current to a load circuit and provides electrical isolation between an application s control circuit and load circuit.

Solid state power switching devices. Solid state devices perfect for high current switching for applications that require high current switching 100a to 1 000a perfect switch llc offers a power gate series of solid state dc. There are many circumstances in which we need to control a high current voltage load based on the operation of a low power circuit such as when using the 5v output of a microcontroller to turn on a 10a 240v load. This article provides an introduction to the basic operation of solid state relays with a focus on the output devices in today s ssrs. Sirius solid state switching devices once installed they offer almost unlimited activity.

Switching devices protection equipment load feeders and motor starters monitoring and control devices safety technology position and safety switches commanding and signaling devices parameterization configuration and. Power switching devices solid state relays ssr watlow solid state relays ssr offer many of the advantages of solid state power controllers yet at a mpxfs dptu 8bumpx t fyufotjwf lopxmfehf jo qpxfs fast cycle. Using sirius solid state switching devices for tasks. Solid state power controllers highly integrated designs for significant weight and volume savings.

Ssrs contain a special fast cycle input card which enables it to work from a standard 4. The first germanium power semiconductor device appeared in 1952 with the introduction of the power diode by r n. Solid state relays ssr watlow solid state relays ssr offer many of the advantages of solid state power controllers but at a lower cost. Regular time and cost intensive device replacements are thus a thing of the past.