A "Pushlock Turn Reset" mushroom head pushbutton with 1 Normally Open (NO) contact. Idec HW Series Pushbutton Standard Electric Supply Co.& more Go to product viewer dialog for this item. A momentary extended pushbutton with 1 NO contact.
Please provide more context about the component (manufacturer, markings, or where you saw “hw133v10”), and I’ll do my best to assist further. hw133v10 datasheet