{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SE5112-0LD02","brand":"Siemens","brandSlug":"siemens","productSlug":"3SE5112-0LD02","canonicalUrl":"https://aoctrl.com/siemens/3SE5112-0LD02","factsUrl":"https://aoctrl.com/api/mcp/products/3SE5112-0LD02","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS mechanical position switch, 3SE5112-0LD02, block narrow housing, roller plunger actuator, IP66/IP67, screw terminals, positive opening, 10 A thermal current, 400 V insulation voltage.","salesMarkdown":"The Siemens 3SE5112-0LD02 is a SIRIUS mechanical position switch in a metal block-narrow housing with a roller plunger actuator — a standard EN 50041 design C head. It's built for positive-opening snap-action contacts, meaning the normally-closed circuit physically breaks open even if the contacts weld, which is what earns it a place in safety circuits guarding access points on conveyor zones, machine enclosures, or palletizers. Rated IP66/IP67, the metal housing with cathodic dip coating handles washdown environments and outdoor installation without corrosion issues — common on sorting lines or packaging machines where hoses are the cleaning tool. Thermal current Ith is 10 A, but the real switching limits depend on voltage and load type: at 240 V AC it's rated 6 A, at 24 V DC it's 3 A, and at 400 V AC it drops to 0.12 A. That 400 V figure is the insulation voltage rating — the switch is designed for 400 V systems, but the contact rating at that voltage is low, so it's a signal-level or low-power interlock at line voltage, not a motor-load switch. Repeat accuracy of 0.05 mm means the switch trips at nearly the same actuator position every cycle — important for precision cam tracks or registration-based diverters where consistent timing avoids product jams. Shock resistance per IEC 60068-2-27 is 30 g for 11 ms — that covers most conveyor impact and vibration without false trips. ## Wiring and mounting details Screw-type terminals accept 1x (0.5 to 1.5 mm²) solid or 2x (0.5 to 0.75 mm²) solid; AWG equivalents are 1x (20 to 16) solid and 2x (20 to 18) stranded. Single M20 x 1.5 cable entry — plan your conduit or gland accordingly. Mounting position is any orientation; fastening is by screw fixing through the 40 mm wide, 116.3 mm long metal body. The roller plunger uses a high-grade steel roller, so it holds up against steel cams or hardened actuator dogs without galling. For BOM compliance, the switch carries a substance prohibitance date of 07/01/2006, aligning with RoHS and REACH substance restrictions. No UL or CSA listing appears in the spec record, so verify with your local Siemens rep if a specific agency mark is required for your panel certification.","metaTitle":"Siemens 3SE5112-0LD02 SIRIUS Position Switch, IP66/IP67, Rol","metaDescription":"Siemens SIRIUS 3SE5112-0LD02 mechanical position switch with positive opening, roller plunger, IP66/IP67, 10 A thermal, 400 V insulation. Active production. 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":"1x (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":"40 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":"116.3 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","Design Of The Housing":"block, narrow","at AWG cables stranded":"1x (20 ... 16), 2x (20 ... 18)","Design Of The Interface":"without","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":"3SE5112-0LA00","Substance Prohibitance (Date)":"07/01/2006","Type Of Electrical Connection":"screw-type terminals","Insulation Voltage Rated Value":"400 V","Design Of The Actuating Element":"Roller plunger, high-grade steel roller","Design Of The Switching Contact":"mechanical","Operating Frequency Rated Value":"50 ... 60 Hz","Design Of The Switching Function":"positive opening","Standard-Compliant Actuator Head":"EN 50041, design C","Product Function Positive Opening":"Yes","Suitability For Use Safety Switch":"Yes","Of The Supplied Switching Contacts":"3SE5000-0LA00","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":"3SE5112-0AA00","Design Of The Housing According To Standard":"Yes","Number Of Switching Contacts Safety-Related":"2","Material Of The Enclosure Of The Switch Head":"metal","number of NC contacts for auxiliary contacts":"2","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 Force In Directions Of Actuation":"20 N","Of The Supplied Actuator Head For Position Switches":"3SE5000-0AD02","Design Of The Interface For Safety-Related Communication":"without"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$35.56 – $99.30","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8e3eb366ddc1ce89c849b636c14b7295.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=13519&mlfb=3SE5112-0LD02","alternativesUrl":"https://aoctrl.com/api/mcp/products/3SE5112-0LD02/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3SE5112-0LD02?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through our independent distribution channels; we do not publish live stock or price figures on the page."},{"question":"What is the positive opening function and why does it matter?","answer":"Positive opening means the normally-closed contact is mechanically forced open by the actuator, even if the contacts are welded shut. This is required for safety interlock circuits per IEC 60947-5-1, ensuring a fail-safe state when the guard opens."},{"question":"What compliance documentation does this switch carry?","answer":"The substance prohibitance date of 07/01/2006 indicates RoHS and REACH compliance. No UL or CSA listing is recorded in the available spec data — confirm with Siemens if a specific agency certification is needed for your jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SE5112-0LD02","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/3SE5112-0LD02 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}}