{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SE5322-0SB21","brand":"Siemens","brandSlug":"siemens","productSlug":"3SE5322-0SB21","canonicalUrl":"https://aoctrl.com/siemens/3SE5322-0SB21","factsUrl":"https://aoctrl.com/api/mcp/products/3SE5322-0SB21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS mechanical safety switch, 3SE5322-0SB21, with magnetic field lock and positive opening contacts, 10 A thermal current, IP66/IP67, 1 300 N locking force.","salesMarkdown":"The 3SE5322-0SB21 is a SIRIUS mechanical safety switch with a magnetic field lock (open-circuit principle) — the lock releases when power is removed, so a machine guard stays locked until the solenoid is deliberately de-energised. The 1 300 N locking force (EN ISO 14119) means it resists forced opening well beyond what a typical solenoid guard can apply, making it suitable for access gates on high-energy press or robot cells where an operator might lean into the guard. Positive-opening contacts (slow-action, per) guarantee the NC contact breaks mechanically even if welded — a requirement for safety circuits up to SIL 3 / PL e. The 0.05 mm repeat accuracy means the switch triggers at the same actuator position cycle after cycle, critical for interlocking a guard door that must align with a fixed stop. ## Rated electrical envelope Rated thermal current Ith = 10 A, with utilisation ratings of 6 A at 120 V AC, 3 A at 240 V AC, and 3 A at 24 V DC. IP66/IP67 protection means the housing withstands high-pressure washdown and temporary submersion — fit for food-processing, chemical, or outdoor conveyor applications where the switch sees hose-down cleaning. Plastic enclosure, 54 mm wide × 185 mm long, with three M20 × 1.5 cable entries. Screw-type terminals accept 1× (0.5…1.5 mm²) solid or 2× (0.5…0.75 mm²) solid — plan for ferrule termination on stranded wire to avoid strand breakout under the screw. Mounting position any, so it fits vertical or horizontal guard frames without derating. The separate actuator (tumbler design) allows five directions of approach — the actuator can enter from the side, top, or angled, simplifying alignment on a hinged or sliding guard door. No integrated interface (no IO-Link or AS-Interface) — it's a pure hard-wired safety switch. Listed as current production. No official successor or cross-reference — the 3SE5322-0SB21 is the active order code for this magnetic-lock variant.","metaTitle":"Siemens 3SE5322-0SB21 SIRIUS Safety Limit Switch","metaDescription":"Siemens 3SE5322-0SB21 SIRIUS mechanical safety switch with magnetic lock, IP66/IP67, 10 A thermal current, 0.05 mm repeat accuracy.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Limit Switches"],"specifications":{"Solid":"1x (0.5 ... 1.5 mm²), 2x (0.5 ... 0.75 mm²)","Locking Force":"1 300 N","During Storage":"-40 ... +80 °C","Repeat Accuracy":"0.05 mm","Thermal Current":"10 A","lifecycle_stage":"current","Cable Entry Type":"3x (M20 x 1.5)","During Operation":"-25 ... +60 °C","Fastening Method":"screw fixing","Shock Resistance":"30g / 11 ms","Circuit Principle":"slow-action contacts","Mounting Position":"any","Product Brand Name":"SIRIUS","Degree Of Pollution":"class 3","Product Designation":"Mechanical safety switches","Width Of The Sensor":"54 mm","at 24 V rated value":"3 A","at AWG cables solid":"1x (20 ... 16), 2x (20 ... 18)","protection class IP":"IP66/IP67","Length Of The Sensor":"185 mm","Vibration Resistance":"0.35 mm / 5g","at 120 V rated value":"6 A","at 125 V rated value":"0.55 A","at 240 V rated value":"3 A","at 250 V rated value":"0.27 A","Design Of The Housing":"special design","Design Of The Product":"with separate actuator and with tumbler","at AWG cables stranded":"1x (20 ... 16), 2x (20 ... 18)","Design Of The Interface":"without","Locking Mechanism Design":"magnetic field lock (open-circuit principle)","Material Of The Enclosure":"plastic","according to EN ISO 14119":"1 000 N","according to IEC 60068-2-6":"0.35 mm/5g","according to IEC 60068-2-27":"30g / 11 ms","Substance Prohibitance (Date)":"10/01/2011","Supply Voltage Of Magnet Coil":"24 V","Type Of Electrical Connection":"screw-type terminals","Insulation Voltage Rated Value":"250 V","Design Of The Actuating Element":"5 directions of approach","Design Of The Switching Function":"positive opening","Number Of Directions Of Actuation":"5","Product Function Positive Opening":"Yes","Suitability For Use Safety Switch":"Yes","Consumed Active Power Of Magnet Coil":"3.5 W","Surge Voltage Resistance Rated Value":"4 kV","reference code according to IEC 81346-2":"B","Finely Stranded With Core End Processing":"1x (0.5 ... 1.5 mm²), 2x (0.5 ... 0.75 mm²)","Design Of The Housing According To Standard":"No","Number Of Switching Contacts Safety-Related":"4","Material Of The Enclosure Of The Switch Head":"plastic","continuous current of the DIAZED fuse link gG":"6 A; for a short-circuit current smaller than 400 A","continuous current of the C characteristic MCB":"1 A; for a short-circuit current smaller than 400 A","continuous current of the quick DIAZED fuse link":"10 A; for a short-circuit current smaller than 400 A","Mechanical Service Life (Operating Cycles) Typical":"1 000 000","Minimum Actuating Force In Directions Of Actuation":"30 N","Design Of The Interface For Safety-Related Communication":"without"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$379.00","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=124084&mlfb=3SE5322-0SB21","alternativesUrl":"https://aoctrl.com/api/mcp/products/3SE5322-0SB21/alternatives.json"},"ai":{"faq":[{"question":"What actuator is compatible with 3SE5322-0SB21?","answer":"The switch is designed for a separate tumbler actuator with five directions of approach. The Siemens SIRIUS range includes matching actuators (e.g., 3SE5000 series) — confirm the actuator part number against the guard geometry and approach direction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SE5322-0SB21","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3SE5322-0SB21 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}