Single limit safety switch, N1ASafety switches in this series are used for protection of personnel, machinery and industrial goods in all areas of machine and plant construction owing to their design and great flexibility. This series is characterised by a seamless interaction of all actuation elements central to the functioning of these switches. This ensures that the switching element impeding the safety function unavoidably isolates the circuit, including in the case of contact welding, for example. Heavy-duty, die-cast aluminium housing Roller plunger actuator Break-before-make as positive NC and NO contact Manufactured in accordance with DIN 43693 ### 安全限位开关