... 660V, On-off time:100ms. SSR(1 or 3 phase Solid State Relay)1, Features: Imported electrical parts,high switching speed ... 2, Sorting: Single/3-phase Solid State Relay,DC/AC Solid State Relay,medium/high-power solid state relay.Working current 25- ... -300A.6. Widely used in various automatic fields like chemical fibre machinery, temperature controller, electric cooker, rubber machinery, fountain control, ...