... 24V-660V, On-off time:100ms. SSR(1 or 3 phase Solid State Relay)1, Features: Imported electrical parts,high ... and explosion-proof,reliable quality,long work life.2, Sorting: Single/3-phase Solid State Relay,DC/AC Solid State Relay, ... in various automatic fields like chemical fibre machinery, temperature controller, electric cooker, rubber machinery, fountain control, numerical control machinery etc ...