LSXA3K MICRO SWITCH™ Hazardous Location Limit Switches: LSX Series, Epoxy-Coated Aluminum Housing, Side Rotary, Momentary, 1 NC/1 NO. LSXA3K Limit Switch from Honeywell is an explosion-proof device, specially designed for use in hazardous atmospheres. It comes with captive head, body screws and field adjustable operating modes for reduced inventory. This Honeywell switch features tracking interchangeability with micro switch ML-E1 and HDLS and comes with a variety of heads and non-sparking actuators.