The LSB1A is a single-pole double-throw (SPDT) 1NO-1NC heavy-duty Limit Switch with top rotary actuator and 0.5-inch 14NPT conduit. The MICRO SWITCH™ snap action heavy-duty limit switch comes with zinc die-cast housing, includes boss-and-socket head design for secure head-to-body retention, unique all-metal drive train for consistent operating characteristics even at high temperature (lasts longer without the need for frequent adjustment than drive trains with plastic parts,) self-lifting pressure plate terminals save wiring time, easily identified grounding terminal (inside) for compliance with OSHA and other regulatory agency standards.