contactor
contactor
(OP)
which contactor is best for a motor opration which is a continuos process and why.
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RE: contactor
For a motor that has many on/off cycles, or a motor that is nearby other electronics such as PLCs, PCs, etc; then a solid state contactor is a good choice. These are made by power-io.com, sprecherandschuh.com, etc. A solid state: be aware of temperature rise, has virtually no limit on cycles, switches cleanly at the zero crossing mark (= low electronic noise), can handle momentary inrushes fairly well.
For a motor that you need to vary the speed, then something like a ssddrives.com, abb.com, etc is common. A vsd: be aware of temperature rise, virtually no limit on cycles, has electrical noise concerns, infinite speed adjustability, somewhat costly.