Rocker switch or toggle switch
Rocker switches, there are also other brand.

Rocker switch or  toggle switch

This rocker switch
Specification:

    15A/30A 250VAC
    16A 250VAC
    16A 250VAC/20A 125VAC
    10A 250VAC/15A 125VAC
  Contact Resistance:≤50mΩ
  Insulation Resistance:≥100MΩ
  Dielectric intensity:≥1500VAC/1min
  life:≥10000 Cycles