NKK Switches Large Bushing Miniature Pushbutton MB2181SB1W01-DB

The MB2181SB1W01-DB is a four-pole miniature pushbutton with silver-plated contacts rated for 6A at 125V AC, 3A at 250V AC, or 0.4VA maximum at 28V AC/DC. It features a 12mm threaded bushing with keyway, solder lug terminals, and an over-center actuator mechanism. The case is made of diallyl phthalate resin rated UL94V-0, with an operating temperature range of -30°C to +85°C. The unit includes an epoxy-sealed terminal design and provides 1,500V AC dielectric strength between contacts and case. It supports splashproof configurations meeting IP67 per IEC 60529 when ordered with B3 or D3 bushing codes. The plunger travel totals 0.175 inch (4.45mm) with pretravel of 0.125 inch (3.19mm) and overtravel of 0.050 inch (1.26mm). Mounting torque for the bushing is 1.5 Nm for double nut, 0.7 Nm for single nut.