{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1044-1XF00-0GA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1044-1XF00-0GA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1044-1XF00-0GA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1044-1XF00-0GA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S3 power contactor, 3RT1044-1XF00-0GA0, screw terminals, 37 kW at 500 V AC-3, IP20 front, DIN-rail mount.","salesMarkdown":"It's rated for 37 kW at 500 V under AC-3 duty, which is the standard category for starting and stopping squirrel-cage motors during running — the rating that governs real motor sizing. At 400 V AC-2 (slip-ring motors, moderate overloads) it carries 30 kW. The main circuit uses screw-type terminals, accepting solid conductors from 2x 0.5 mm² up to 2x 4 mm², and stranded from 2x 10 mm² to 2x 50 mm². That's a wide enough range to handle both control wiring and power tails without adapters. The S3 frame measures 176 mm high by 70 mm wide by 152 mm deep. That depth matters when you're laying out gland plates and cable ducts — 152 mm is the body depth, not counting any protruding terminals or arc chambers.","metaTitle":"Siemens 3RT1044-1XF00-0GA0 SIRIUS S3 Power Contactor, 37 kW","metaDescription":"Siemens SIRIUS 3RT1044-1XF00-0GA0 S3 power contactor, 37 kW at 500 V AC-3. Screw terminals, IP20 front, DIN-rail mount. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"152 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"70 mm","at AC":"10.6g / 5 ms, 6.2g / 10 ms","at DC":"14 ... 20 ms","Height":"176 mm","Stranded":"2x (10 ... 50 mm²)","at 50 Hz":"0.8 ... 1.1","Arcing Time":"10 ... 15 ms","On The Front":"IP20; IP20 on the front with cover / box terminal","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"400 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 and 75 mm standard mounting rail","Size Of Contactor":"S3","Solid Or Stranded":"2x (2.5 ... 16 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 50 Hz rated value":"110 V","at 500 V rated value":"37 kW","at 690 V rated value":"18.6 kW","Side-By-Side Mounting":"Yes","at 1000 V rated value":"30 W","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"30 kW","at AC-4 at 400 V rated value":"55 A","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"35 mm²","at 60 °C minimum permissible":"35 mm²","Design Of The Surge Suppressor":"with varistor","Insulation Voltage Rated Value":"1 000 V","at 230 V at 60 °C rated value":"34 kW","at 690 V at 60 °C rated value":"102 kW","at 1000 V at 60 °C rated value":"66 W","at AWG cables for main contacts":"2x (10 ... 1/0)","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 125 A","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"fuse gL/gG: 250 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","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 (0.5 ... 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)","Thermal Short-Time Current Limited To 10 S":"600 A","Finely Stranded Without Core End Processing":"2x (10 ... 35 mm²)","apparent holding power of magnet coil at AC":"23.5 VA","apparent pick-up power of magnet coil at AC":"23.5 VA","Type Of Voltage Of The Control Supply Voltage":"AC","Required Spacing For Grounded Parts At The Side":"6 mm","contact rating of auxiliary contacts according to UL":"A600 / Q600","Inductive Power Factor With Closing Power Of The Coil":"0.61","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.26","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":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","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=283269&mlfb=3RT1044-1XF00-0GA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1044-1XF00-0GA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"Height 176 mm, width 70 mm, depth 152 mm. It mounts on 35 mm or 75 mm DIN rail, and side-by-side mounting is allowed without derating."},{"question":"What wire sizes does the screw terminal accept?","answer":"Solid: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded: 2x (10 to 50 mm²). That covers both control and power conductors."},{"question":"What is the motor switching capacity?","answer":"37 kW at 500 V AC-3 (standard motor start/run), 30 kW at 400 V AC-2 (slip-ring motors). The AC-3 rating is the one to use for most induction motor applications."},{"question":"What environment ratings does it carry?","answer":"IP20 on the front with cover or box terminal; IP00 on the terminal body itself. Operating temperature -25 to +60 °C, storage -55 to +80 °C. Pollution degree 3 for industrial environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1044-1XF00-0GA0","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/3RT1044-1XF00-0GA0 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}}