The 3SE5234-0HK21-1AC4 is a dependable limit switch from Siemens, part of the 3SE5 series. Designed with a Roller actuator and a durable Plastic housing, this switch provides 1NC/1NO contact configuration with IP65 environmental protection. Rated for 4000 mA at 250 V with Roller operation, designed for accurate position detection and end-of-travel switching in industrial machinery, conveyor systems, and automated production lines.