{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3SE7120-1BF00","brand":"Siemens","brandSlug":"siemens","productSlug":"3SE7120-1BF00","canonicalUrl":"https://aoctrl.com/siemens/3SE7120-1BF00","factsUrl":"https://aoctrl.com/api/mcp/products/3SE7120-1BF00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3SE7120-1BF00 cable-operated switch, IP65 metal enclosure, 6 A thermal current, 400 V insulation voltage, 2 safety contacts, emergency stop function.","salesMarkdown":"The Siemens 3SE7120-1BF00 is a SIRIUS cable-operated switch in a painted metal enclosure rated IP65, with a grey plastic top cover. It carries a thermal current of 6 A and is rated for 400 V insulation voltage with surge withstand at 6 kV. Two normally-closed safety-related switching contacts provide the emergency stop function, with silver contacts and screw-type terminals accepting 2x (0.5... 2.5 mm²) solid or stranded wire. The switch is rated 6 A at 240 V and 400 V, and 3 A at 24 V. The 6 A thermal current and 400 V insulation voltage define the maximum continuous load and system voltage class. At 240 V and 400 V the switch is rated 6 A; at 24 V it derates to 3 A. The 250 V rating of 0.27 A likely reflects a DC inductive load curve — verify against your specific load type. Ambient temperature range of -25 to +70 °C suits outdoor or unheated enclosures. The IP65 metal enclosure handles washdown and dust, with two M20 x 1.5 cable entries and screw fixing. Dimensions are 171 mm high, 52 mm wide, 54 mm deep.","metaTitle":"Siemens 3SE7120-1BF00 Cable-Operated Switch, IP65, 6 A Therm","metaDescription":"Siemens SIRIUS 3SE7120-1BF00 cable-operated switch, IP65 metal enclosure, 6 A thermal current, 400 V insulation voltage, 2 safety contacts, emergency stop function, -25 to +70 °C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Limit Switches"],"specifications":{"Depth":"54 mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"52 mm","title":"3SE7120-1BF00","Height":"171 mm","description":"Cable-operated switch Metal enclosure, 2x M20 x1.5; 2NC, with latching EN ISO 13850 and pushbutton release for wire lengths up to 5 m","Thermal Current":"6 A","lifecycle_stage":"current","Cable Entry Type":"2x 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":"Yes","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":"Yes","Number Of Switching Contacts Safety-Related":"2","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"0","continuous current of the DIAZED fuse link gG":"6 A","Mechanical Service Life (Operating Cycles) Typical":"100 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$110.49 – $192.18","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9dbfaa765ffc3dbf80ec6c5a1ec93b79.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=73366&mlfb=3SE7120-1BF00"},"ai":{"faq":[{"question":"Does the 3SE7120-1BF00 have an emergency stop function?","answer":"Yes, it includes an emergency stop function with two normally-closed safety-related switching contacts and no normally-open auxiliary contacts."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3SE7120-1BF00","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/3SE7120-1BF00 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}}