{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SE7120-2DD01","brand":"Siemens","brandSlug":"siemens","productSlug":"3SE7120-2DD01","canonicalUrl":"https://aoctrl.com/siemens/3SE7120-2DD01","factsUrl":"https://aoctrl.com/api/mcp/products/3SE7120-2DD01","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3SE7120-2DD01 cable-operated switch, IP65 metal enclosure, 1 NC + 1 NO contacts, thermal current 6 A, insulation voltage 400 V.","salesMarkdown":"The Siemens SIRIUS 3SE7120-2DD01 is a cable-operated switch in a painted metal enclosure with a grey plastic cover, rated IP65. It carries one normally-closed and one normally-open safety-related switching contact, with silver contact material. The thermal current is rated at 6 A, and the insulation voltage at 400 V. Surge voltage resistance is 6 kV, and the ambient temperature range during operation is -25 to +70 °C. The 6 A thermal current (Ith) is the continuous current the contacts can carry in free air — this is not the motor-breaking rating. The switching capacity depends on voltage: at 240 V AC it is rated 6 A, at 400 V AC also 6 A, but at 250 V DC it drops to 0.27 A. For a 24 V DC control circuit, the rated value is 3 A. The cable entry is a single M20 x 1.5 gland; the screw-type terminals accept 2x 0.5 to 2.5 mm² solid or 2x 20 to 14 AWG stranded wire. Mounts via screw fixing — no DIN rail. The enclosure measures 172 mm high, 53 mm wide, 43 mm deep. Cable entry is a single M20 x 1.5 threaded hole. The circuit principle is a jump function (changeover contact). No status display or emergency stop function is built in.","metaTitle":"Siemens 3SE7120-2DD01 SIRIUS Cable-Operated Switch, IP65, 6","metaDescription":"Siemens SIRIUS 3SE7120-2DD01 cable-operated switch. IP65 metal enclosure, 1 NC + 1 NO contacts, rated 6 A at 240/400 V. Active lifecycle. RFQ for sourcing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Limit Switches"],"specifications":{"Depth":"43 mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"53 mm","title":"3SE7120-2DD01","Height":"172 mm","description":"cable-operated switch metal enclosure, 2x M20 x1.5; 1 NO+1 NC, without latching, for cable lengths up to 5 m, only Bowden cable function, 55 N spring, maximum actuating force 80 N","Thermal Current":"6 A","lifecycle_stage":"current","Cable Entry Type":"1x M20 x 1,5","Fastening Method":"screw fixing","Of The Enclosure":"black","Circuit Principle":"Jump function","Product Brand Name":"SIRIUS","Degree Of Pollution":"class 3","Product Designation":"cable-operated switch","at 24 V rated value":"3 A","at AWG cables solid":"2x (20 ... 14)","protection class IP":"IP65","at 240 V rated value":"6 A","at 250 V rated value":"0.27 A","at 400 V rated value":"6 A","at AWG cables stranded":"2x (20 ... 14)","Material Of The Contact":"Silver","Coating Of The Enclosure":"painted","Material Of The Enclosure":"metal","Of The Enclosure Top Part":"grey","Substance Prohibitance (Date)":"07/01/2006","Type Of Electrical Connection":"screw-type terminals","Insulation Voltage Rated Value":"400 V","Product Component Light Source":"No","Material Of The Enclosure Cover":"Plastic","Product Function Status Display":"No","Ambient Temperature During Operation":"-25 ... +70 °C","Surge Voltage Resistance Rated Value":"6 kV","product component EMERGENCY STOP device":"No","reference code according to IEC 81346-2":"S","Finely Stranded With Core End Processing":"2x (0.5 ... 2.5 mm²)","product function EMERGENCY STOP function":"No","Number Of Switching Contacts Safety-Related":"1","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","Mechanical Service Life (Operating Cycles) Typical":"1 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$73.18 – $216.55","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fe37c2dc381d147b2b176826d2b9efc4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=61110&mlfb=3SE7120-2DD01"},"ai":{"faq":[{"question":"What is the depth of the 3SE7120-2DD01?","answer":"The depth is 43 mm."},{"question":"What wire sizes does the 3SE7120-2DD01 accept?","answer":"The screw terminals accept 2x 0.5 to 2.5 mm² solid (or 2x 20 to 14 AWG solid), and 2x 0.5 to 2.5 mm² finely stranded with core end processing (or 2x 20 to 14 AWG stranded)."},{"question":"Does the 3SE7120-2DD01 have an emergency stop function?","answer":"No, the product component and function for emergency stop are both listed as 'No'."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SE7120-2DD01","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/3SE7120-2DD01 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}}