Eaton's 10250T line of 30.5 mm pushbuttons features a heavy duty zinc Die-Cast construction. Reliability nibs improve contact reliability even under dry circuit and fine dust conditions. In addition, drainage holes prevent the buildup of liquid inside the operator, which can prevent operation in freezing environments. EATON Contact Block, Heavy Duty, Series: 10250T, 30.5 mm Size, 1NO Contact Configuration, 10 A at 600 VAC, 5 A at 250 VDC Contact, Silver Contact, Momentary Action, Thermoplastic Block, Pushbutton Operator, NEMA 3/3R/4/4X/12/13 NEMA Rating, IP65 Enclosure, Pressure Terminal, Stackable Mounting, Die-Cast Zinc, Green/Red, 1.9 in L x 1.3 in W x 2.1 in H Dimensions