Balluff BNS 819-100-D-11 Limit Switch

Balluff BNS 819-100-D-11 is a mechanical limit switch (end switch) with a single SPDT snap-contact output, designed for reliable end-of-travel sensing in industrial automation. Housed in aluminum, anodized construction, its compact footprint measures 42 mm wide by 22 mm high by 47 mm long and it carries IP67 protection for dust and water immersion. The plunger is stainless steel (1.4034) with a chisel actuator, requiring about 8 N of actuation force, and it can be actuated from the side or at right angles to the mounting surface. Electrical connection is via screw terminals on the housing, and the device is rated for up to 250 V AC and 5 A continuous current, with a mechanical life of up to 10 million switching cycles and a switching rate up to 200 cycles per minute. The cam-reference edge distance is specified at 2.30 to 2.80 mm and the approach speed is up to 20 m/min, offering precise, repeatable switching at typical machine travel speeds. The unit uses silver contacts and is designed for a single switching position (one changeover contact), making it suitable for end-of-travel detection in conveyors, machine tools, packaging lines, and general automation where compact form factor and robust operation are required.