The 21136NA is a low-profile single-pole toggle switch from the 21000N series, featuring a threaded bushing with mounting plate and epoxy-sealed terminals as standard. This switch is designed with the same height as double-pole variants and is wave-solderable only. It offers multiple electrical function options including ON-OFF-ON, ON-OFF-MOM, and ON-MOM configurations, with silver contacts rated for 4 A at 30 VDC maximum and an initial contact resistance of 20 mO maximum. The switch operates reliably over a temperature range of -40°C to +85°C with an electrical life of 20,000 cycles at full load and mechanical life of 100,000 cycles. Its compact design and robust construction make it suitable for industrial control panels, instrumentation, and consumer electronics requiring reliable switching functionality.