{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SE5112-0BD02","brand":"Siemens","brandSlug":"siemens","productSlug":"3SE5112-0BD02","canonicalUrl":"https://aoctrl.com/siemens/3SE5112-0BD02","factsUrl":"https://aoctrl.com/api/mcp/products/3SE5112-0BD02","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, Mechanical position switch, 3SE5112-0BD02, roller plunger, positive opening, IP66/IP67, 10 A thermal current, screw terminals.","salesMarkdown":"The Siemens 3SE5112-0BD02 is a SIRIUS mechanical position switch with a roller plunger actuator, designed for positive opening of the normally closed contacts. It is a current-production part, still actively manufactured. The metal enclosure carries IP66/IP67 protection, meaning the switch body and the actuator seal withstand direct hose-down and temporary immersion — suitable for washdown zones in food processing, packaging lines, and outdoor conveyor transfer points. The actuator head conforms to EN 50041 design C, a standard interface for industrial limit switches, so it mounts directly to existing brackets and cams without adapter plates. The thermal current (Ith) is rated 10 A, which is the continuous current the contacts can carry in free air. The switching capacity depends on voltage: 6 A at 240 V AC, 3 A at 24 V DC, and derated to 0.12 A at 400 V AC. For a 24 V DC control circuit, the 3 A rating covers most PLC input modules and relay coils directly. Repeat accuracy is specified at 0.05 mm, meaning the switch triggers at virtually the same actuator position on every cycle. This matters for cam-follower applications where consistent timing of the switching point is required — for example, detecting a carriage at end-of-travel within a tight window. The slow-action contacts with positive opening (per IEC 60947-5-1) guarantee that the NC contact physically breaks even if welded. This is a safety function: the switch can be used in a safety circuit where the NC channel must open reliably when the actuator is depressed. The switch can be installed in unheated outdoor enclosures or near hot machinery surfaces, as long as the ambient at the switch body stays within the operating band. The switch is fastened by screw fixing (two M4 or M5 bolts through the slotted holes in the metal base). The housing is a narrow block design, 40 mm wide and 116.3 mm long, with a rounded switch head. The cathodic dip coating on the metal enclosure provides corrosion resistance in humid or mildly aggressive atmospheres. The switch carries a RoHS substance prohibitance date of July 1, 2006, confirming compliance with the EU RoHS directive.","metaTitle":"Siemens 3SE5112-0BD02 SIRIUS Position Switch, IP66/IP67, Pos","metaDescription":"Siemens 3SE5112-0BD02 SIRIUS mechanical position switch. IP66/IP67, positive opening contacts, roller plunger, 10 A thermal current. Active production. Sourced to order against RFQ","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)","title":"3SE5112-0BD02","description":"Position switch Metal enclosure 40 mm according to EN 50041 Device connection 1x (M20 x 1.5) 1 NO/1 NC slow-action contacts Roller plunger with Stainless steel roller 13 mm","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":"slow-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","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","for AWG cables solid":"1x (20 ... 16), 2x (20 ... 18)","Design Of The Housing":"block, narrow","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":"rounded","Material Of The Enclosure":"metal","according to IEC 60068-2-27":"30g / 11 ms","Of The Supplied Basic Switch":"3SE5112-0BA00","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":"3SE5000-0BA00","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":"1","Material Of The Enclosure Of The Switch Head":"metal","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 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":"$38.06 – $98.40","stockQuantity":0,"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=152041&mlfb=3SE5112-0BD02"},"ai":{"faq":[{"question":"What is the 3SE5112-0BD02 used for?","answer":"It is a mechanical position switch with positive opening contacts, used to detect the position of moving machine parts (e.g., end-of-travel, cam profiles) and to provide a safety-rated signal in control circuits. The roller plunger actuator is suited for linear or rotary cam followers."},{"question":"Does the 3SE5112-0BD02 have positive opening contacts?","answer":"Yes, the product function is explicitly listed as positive opening. The slow-action contacts ensure the NC circuit breaks mechanically even if the contacts are welded, meeting the requirements for safety circuits per IEC 60947-5-1."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SE5112-0BD02","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/3SE5112-0BD02 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}