{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-3KF44-0LA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-3KF44-0LA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-3KF44-0LA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-3KF44-0LA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 110 V DC coil, screw-type main terminals, spring-loaded auxiliary terminals, IP20 front, 153 mm depth.","salesMarkdown":"For motor duty, the contactor delivers 7.5 kW at AC-2 (400 V) and 15.5 A at AC-4 (400 V), covering standard squirrel-cage motor starting and plugging/inching applications. Resistive load handling reaches 10 A at AC-12 maximum. The coil draws 23 W on closing and 7 W holding, with a varistor surge suppressor built in for DC switching. Type 1 coordination requires 63 A. The contactor is rated for pollution degree 3 and operates from -40 °C to +70 °C, with IP20 protection on the front and IP00 at the terminals. The auxiliary contact block supports DC switching at 110 V (1 A), 24 V (10 A), 60 V (2 A), 220 V (0.3 A), 230 V (6 A), 400 V (3 A), 500 V (10 kW), and 690 V (11 kW).","metaTitle":"Siemens SIRIUS 3RT1025-3KF44-0LA0 Power Contactor, 110 V Coi","metaDescription":"Siemens SIRIUS 3RT1025-3KF44-0LA0 power contactor, size S0, 110 V DC coil, screw main terminals, spring-loaded aux, IP20 front. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"153 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"70 mm","Height":"88 mm","Rated Value":"110 V","On The Front":"IP20","Initial Value":"0.7","Of The Terminal":"IP00","lifecycle_stage":"current","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Full-Scale Value":"1.25","Size Of Contactor":"S0","Solid Or Stranded":"2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 mm²","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 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":"6 A","at 400 V rated value":"3 A","at 500 V rated value":"10 kW","at 690 V rated value":"11 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"7.5 kW","at AC-4 at 400 V rated value":"15.5 A","Substance Prohibitance (Date)":"07/01/2006","Design Of The Surge Suppressor":"with varistor","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","For Auxiliary And Control Circuit":"spring-loaded terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 25 A","closing power of magnet coil at DC":"23 W","holding power of magnet coil at DC":"7 W","With Type Of Coordination 1 Required":"fuse gL/gG: 63 A","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","Required Spacing For Grounded Parts At The Side":"6 mm","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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":"2","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=42139&mlfb=3RT1025-3KF44-0LA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-3KF44-0LA0/alternatives.json"},"ai":{"faq":[{"question":"What is 3RT1025-3KF44-0LA0's listed depth?","answer":"The depth is 153 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-3KF44-0LA0","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/3RT1025-3KF44-0LA0 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}}