The Allen-Bradley Bulletin 802B family of compact limit switches brings precision position sensing into the tightest machine envelopes, with a focus on washdown-ready construction for food processing and packaging lines. The die-cast metal body achieves IP67 and NEMA 6 ingress protection through a triple-seal design, while pre-wired cable and sealed rubber gland entry options eliminate the conduit openings that typically compromise sealing in standard limit switches.

How does the 802B withstand washdown environments?

Triple-seal construction on compact models prevents water and detergent ingress during hose-directed cleaning. Pre-wired 3 m cable versions remove the conduit entry entirely — the most common leak path in traditional limit switch installations. Small Precision variants use a rubber cable gland that maintains IP67 sealing at the cable entry point. Combined with stainless steel actuator options, these design choices make the 802B suited to the daily caustic washdown cycles of food and beverage production.

Which body styles and actuator heads are available?

The 802B spans three body styles — Compact, Precision, and Small Precision — with 5 to 13 interchangeable head configurations per style. Options include top push (plain, roller, cross roller), rotary arm (standard and center), wobble stick, and one-way roller lever. Booted head versions provide additional sealing on Precision models. Industry-standard mounting dimensions simplify retrofitting into existing machine layouts.

What is the expected service life?

Mechanical life reaches 10 million operations across all body styles. Electrical life is 200,000 operations at 3 A / 250 V AC for compact models and 500,000 operations at up to 15 A for precision models. Silver alloy contacts ensure stable low-resistance switching over the full service interval. Operating frequency is 120 operations per minute mechanical and 20 to 30 operations per minute electrical, depending on model.