Shop Vac 950B On/Off Rocker Switch 4 Post Rocker Switch. Shop Vac Switch 984B 950B 8231900 1250AR 1A 30V 10(6)A 250V~AC T100 400V~6A T100. 250VAC 10A 30VDC 1A 1/2HP 125VAC 250VAC 16A Res. Manufacturer Part No.: 8231900