{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SE5122-0CH01","brand":"Siemens","brandSlug":"siemens","productSlug":"3SE5122-0CH01","canonicalUrl":"https://aoctrl.com/siemens/3SE5122-0CH01","factsUrl":"https://aoctrl.com/api/mcp/products/3SE5122-0CH01","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3SE5122-0CH01, Mechanical position switch, block design, metal enclosure, roller lever actuator, positive opening contacts, IP66/IP67, 10 A thermal current.","salesMarkdown":"## Positive opening for safety circuits The 3SE5122-0CH01 uses snap-action contacts with a positive opening mechanism, meaning the NC contacts are mechanically forced open when the actuator is operated — this is the feature that qualifies it for use in safety circuits where a welded contact must not go undetected. The roller lever actuator (metal lever, 27 mm long, 9 mm step, plastic roller 19 mm) follows EN 50041 design A, so it mates with standard actuator heads on guards and gates. ## Sealed for washdown, repeatable for positioning IP66/IP67 protection class means the metal enclosure (cathodic dip coated) keeps washdown water and dust out — suitable for food processing, packaging, or outdoor conveyor lines where a hose-down is part of the shift cycle. The 0.05 mm repeat accuracy gives you a consistent trip point for position sensing, so a gate or diverter that cycles thousands of times a day doesn't drift. ## Wiring and mounting constraints Screw terminals accept 1x (0.5... 1.5 mm²) solid or 2x (0.5... 0.75 mm²) solid, with AWG equivalents 1x (20...16) solid and 1x (20...16) stranded. Three M20 x 1.5 cable entries give you room for separate power and signal runs — one entry for the incoming supply, one for the safety circuit, one spare for a future add-on. Mounting position is any orientation, screw fixing, block-wide housing (56 mm wide, 127.5 mm long). The supplied basic switch is 3SE5122-0CA00 and the operating lever is 3SE5000-0AA01 — if the lever gets damaged in service, you order the lever separately without replacing the whole switch. ## Current ratings across voltage bands Thermal current (Ith) is 10 A, but the switching current depends on the voltage and load type: at 240 V AC it switches 6 A, at 24 V DC it switches 3 A, at 125 V AC 0.55 A, at 250 V DC 0.27 A, at 400 V DC 0.12 A. The 400 V insulation voltage rating covers most 3-phase control circuits up to that line-to-line level.","metaTitle":"Siemens 3SE5122-0CH01 Limit Switch, Positive Opening","metaDescription":"Siemens 3SE5122-0CH01 SIRIUS mechanical limit switch with positive opening contacts, IP66/IP67, 10 A thermal current, 0.05 mm repeat accuracy. Sourced to order.","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)","During Storage":"-40 ... +90 °C","Repeat Accuracy":"0.05 mm","Thermal Current":"10 A","lifecycle_stage":"current","Active Principle":"mechanical","Cable Entry Type":"3x (M20 x 1.5)","During Operation":"-25 ... +85 °C","Fastening Method":"screw fixing","Circuit Principle":"snap-action contacts","Mounting Position":"any","Product Brand Name":"SIRIUS","Degree Of Pollution":"class 3","Product Designation":"Mechanical position switches","Width Of The Sensor":"56 mm","at 24 V rated value":"3 A","protection class IP":"IP66/IP67","Length Of The Sensor":"127.5 mm","at 125 V rated value":"0.55 A","at 240 V rated value":"6 A","at 250 V rated value":"0.27 A","at 400 V rated value":"0.12 A","for AWG cables solid":"1x (20 ... 16), 2x (20 ... 18)","Design Of The Housing":"block, wide","Design Of The Interface":"without","for AWG cables stranded":"1x (20 ... 16), 2x (20 ... 18)","Coating Of The Enclosure":"cathodic dip coating","Shape Of The Switch Head":"roller","Material Of The Enclosure":"metal","according to IEC 60068-2-27":"30g / 11 ms","Of The Supplied Basic Switch":"3SE5122-0CA00","Substance Prohibitance (Date)":"07/01/2006","Type Of Electrical Connection":"screw-type terminals","Insulation Voltage Rated Value":"400 V","Design Of The Actuating Element":"Twist lever, metal lever, 27 mm long, step 9 mm, plastic roller 19 mm","Design Of The Switching Contact":"mechanical","Of The Supplied Operating Lever":"3SE5000-0AA01","Operating Frequency Rated Value":"50 ... 60 Hz","Design Of The Switching Function":"positive opening","Standard-Compliant Actuator Head":"EN 50041, design A","Product Function Positive Opening":"Yes","Suitability For Use Safety Switch":"Yes","Of The Supplied Switching Contacts":"3SE5000-0CA00","Surge Voltage Resistance Rated Value":"6 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)","Of The Supplied Empty Enclosure With Cover":"3SE5122-0AA00","Design Of The Housing According To Standard":"No","Number Of Switching Contacts Safety-Related":"1","Material Of The Enclosure Of The Switch Head":"plastic","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","continuous current of the DIAZED fuse link gG":"6 A","continuous current of the C characteristic MCB":"1 A; for a short-circuit current smaller than 400 A","vibration resistance according to IEC 60068-2-6":"0.35 mm/5g","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":"15 000 000","Minimum Actuating Torque In Directions Of Actuation":"0.25 N·m","Of The Supplied Actuator Head For Position Switches":"3SE5000-0AH00","Design Of The Interface For Safety-Related Communication":"without"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$34.29","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=462536&mlfb=3SE5122-0CH01","alternativesUrl":"https://aoctrl.com/api/mcp/products/3SE5122-0CH01/alternatives.json"},"ai":{"faq":[{"question":"Is the 3SE5122-0CH01 suitable for use in safety circuits?","answer":"Yes — the positive opening mechanism (per EN 50041) mechanically forces the NC contacts open on actuation, which is the standard requirement for safety interlock switches used with guard doors and hazard zones."},{"question":"How do I wire the 3SE5122-0CH01?","answer":"Use the three M20 x 1.5 cable entries with screw terminals accepting 1x (0.5...1.5 mm²) or 2x (0.5...0.75 mm²) solid wire. The switch has no interface — it's a direct-contact device, so wire the NC and NO circuits directly to your safety relay or PLC input."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SE5122-0CH01","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/3SE5122-0CH01 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}}