ITEM NAME:5PCS KW4-3Z-3 Micro Switch KW4 Limit Switch 3pin N/O N/C OZ a.imagelink a:hover.imagelink {color:#db3606;.5pcs KW4-3Z-3 Micro Switch. MICRO SWITCH N/O /N/C Switch. Operation range: 0.5-1.1mm. Operation differential range: ≤0.3mm. Insulation resistance: ≥100MΩ. Rated current: 5A 125VDC.