{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT6025-1KF40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT6025-1KF40","canonicalUrl":"https://aoctrl.com/siemens/3RT6025-1KF40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT6025-1KF40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS coupling contactor, 3RT6025-1KF40, 110 V coil, AC-3 rated 690 V, 23 kW at 400 V, screw terminals, DIN rail mount.","salesMarkdown":"Its 110 V coil and AC-3 rating up to 690 V mean it handles a 23 kW motor at 400 V or 40 kW at 690 V in standard three-phase duty. The built-in varistor surge suppressor protects the coil circuit from voltage spikes, so you don't need an external snubber on the control side. Main current circuit and auxiliary/control circuit both use screw-type terminals. Accepts 2x (0.5…1.5 mm²) solid or stranded on the control side, and 2x (16…12 AWG) or 2x (14…8 AWG) for the main contacts. Minimum permissible conductor cross-section at 40 °C and 60 °C is 10 mm².","metaTitle":"Siemens 3RT6025-1KF40 SIRIUS Coupling Contactor, 110 V Coil,","metaDescription":"Siemens SIRIUS 3RT6025-1KF40 coupling contactor, 110 V coil, 23 kW at 400 V AC-3. Current lifecycle status. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"107 mm","Width":"45 mm","at DC":"1 500 1/h","Height":"85 mm","Rated Value":"110 V","During Storage":"-55 ... +80 °C","at AC-1 maximum":"1 000 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"300 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022","at AC-3e maximum":"1 000 1/h","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S0","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"Coupling contactor","at 24 V rated value":"6 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"10 A","at 400 V rated value":"3 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-3 rated value maximum":"690 V","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"10 mm²","at 60 °C minimum permissible":"10 mm²","Design Of The Surge Suppressor":"with varistor","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"13.3 kW","at 400 V at 60 °C rated value":"23 kW","at 690 V at 60 °C rated value":"40 kW","for AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"No","With Type Of Assignment 2 Required":"gL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 25 A","closing power of magnet coil at DC":"4.5 W","holding power of magnet coil at DC":"4.5 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"gL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 63 A","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","at ambient temperature 40 °C rated value":"40 A","at ambient temperature 60 °C rated value":"35 A","Type Of Voltage Of The Control Supply Voltage":"DC","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/246bd18511adbd0cd1971b66b33afa2f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=580185&mlfb=3RT6025-1KF40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT6025-1KF40/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT6025-1KF40?","answer":"The closest peer is 3RT6023-1BW40, but the 3RT6025-1KF40 carries a 110 V coil and higher motor power ratings (23 kW at 400 V vs the 3RT6023 frame's lower output). They share the same S0 size and DIN rail footprint, so a panel designed for the 3RT6023-1BW40 can accept the 3RT6025-1KF40 without rewiring the mounting or bus bars — just verify the coil voltage matches your control circuit."},{"question":"Where can I buy 3RT6025-1KF40?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What compliance documentation does Siemens provide for 3RT6025-1KF40?","answer":"The part carries a substance prohibitance date of 05/01/2012, indicating RoHS compliance from that date. Standard Siemens documentation includes the declaration of conformity and CE marking; specific UL or IEC certificates are available on request through the RFQ process."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT6025-1KF40","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/3RT6025-1KF40 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}}