What this part is and where it fits
The Siemens 3SF3200-8CV00-0BA1 is a communication-capable position switch with an integrated AS-i interface, designed for direct connection to an AS-i bus network via the insulation displacement method. It carries a positive-opening switching function (per EN 60947-5-1) — meaning the NC contacts are mechanically forced open when the actuator is depressed, regardless of weld or spring failure. That makes it suitable for safety-related position detection on doors, guards, or movable machine elements where a fail-safe signal is required. The housing is a molded-plastic block design to EN 50047, 31 mm wide, with a rounded plunger actuator (6 mm diameter). The IP65 rating means the switch body and actuator seal against dust ingress and low-pressure water jets — fine for washdown areas or dusty factory floors, but not for submersion or high-pressure spray. It provides 2 normally-closed (NC) auxiliary contacts and no normally-open (NO) contacts. The positive-opening feature applies to both NC contacts, so the switch can be wired into a safety circuit that monitors guard position. The mechanical active principle means no electronics in the switching path — just a direct mechanical link from plunger to contact block.
Sourcing and lifecycle
For a BOM line that calls out 3SF3200-8CV00-0BA1, the part is sourced to order against an RFQ. Availability and current pricing are confirmed at quote time through our independent distribution network.
Integration notes
Mounting is by screw fixing through the block housing — no DIN-rail clip on this variant. The switch head conforms to EN 50047 design B, so it fits standard actuator heads and cam tracks used across the SIRIUS 3SF3 family. The 6 mm plunger overtravel is built in, meaning the switch can be driven past the snap point without damage, which is typical for cam-operated guard doors. Electrical connection is via AS-i insulation displacement terminals — no screw terminals, no tool needed beyond a wire stripper. The AS-i flat cable is simply pressed into the slots. This saves wiring time on a multi-station line but locks you into the AS-i protocol (no Profinet, no IO-Link). Operating temperature range is -25 to +60 °C, which covers most indoor industrial environments but not foundries or cold stores.