WP121J2ZB2 is a single-pole washable rocker switch designed for wave soldering and PCB cleaning processes. It features an SPDT (Single Pole Double Throw) circuit with an ON-NONE-ON momentary contact configuration, a screw-mount rocker actuator, and printed circuit (PC) board terminals with coin silver contacts. The switch is rated for 6 amperes at 125 VAC, 3 amperes at 250 VAC, or 6 amperes at 28 VDC resistive, with an initial contact resistance of 10 milliohms maximum at 3 VDC and 100 mA. It operates reliably over a temperature range of -30°C to +85°C and provides 60,000 make-and-break cycles under resistive load. This switch is ideal for applications requiring washable, solderable miniature switching solutions in industrial control panels, consumer appliances, and medical equipment where durability and cleaning compatibility are essential.