The LSR1A is a 1NC/1NO SPDT snap-action standard heavy-duty Limit Switch with momentary side rotary actuator. The MICRO SWITCH™ limit switch 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, one piece flat gasket (seals better than gaskets that go around curves and corners, does not contact terminal pins to reduce chances of fluid migration) front mounting and interchangeability of single-pole switches. Exclusive teller tab assures proper torque (when it cannot be moved the lever is tight enough to prevent slippage) and domestic and international conduit taps. It is suitable for machine tools and material handling.