{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1044-1AP00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1044-1AP00","canonicalUrl":"https://aoctrl.com/siemens/3RT1044-1AP00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1044-1AP00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S3 power contactor, 3RT1044-1AP00, 30 kW at AC-2 400 V, 55 A at AC-4 400 V, screw terminals, snap-on 35/75 mm rail.","salesMarkdown":"The Siemens 3RT1044-1AP00 is a SIRIUS S3-frame power contactor rated for motor switching at 30 kW in AC-2 duty at 400 V, and 55 A in AC-4 duty at 400 V — the AC-4 figure governs reversing and plugging applications where the contactor makes and breaks stalled rotor current. At 70 mm wide by 146 mm high by 139 mm deep, the S3 frame fits standard motor-starter footprints; the IP20 front enclosure with IP00 terminal area means the contactor is protected against finger contact on the front but the lug area is live — plan for terminal shrouds or a cover/box terminal accessory if the panel has a higher touch-protection requirement. Coil operates at 50 Hz with a voltage tolerance factor of 0.8 to 1.1 times rated; the 24 V DC coil draws 10 A inrush, dropping to lower hold-in current. Mechanical life is typical 10 million operations; maximum switching rates are 1000 cycles/hour at AC-1 and AC-3, 400 at AC-2, and 300 at AC-4 — the AC-4 rate is the limiting factor for frequent reversing duty. RoHS compliance date is 05/01/2012, covering the EU RoHS substance prohibitions. The part carries no UL/CSA/CE mark in the available spec record — verify with the factory or a local Siemens representative if your panel requires third-party certification.","metaTitle":"Siemens 3RT1044-1AP00 SIRIUS Power Contactor, 30 kW AC-2, 55","metaDescription":"Siemens 3RT1044-1AP00 SIRIUS S3 power contactor. 30 kW at AC-2 400 V, 55 A at AC-4 400 V. Screw terminals, snap-on mounting. Current lifecycle stage. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"139 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 ... 19 ms","Height":"146 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","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":"230 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","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":"21 VA","apparent pick-up power of magnet coil at AC":"218 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=261765&mlfb=3RT1044-1AP00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1044-1AP00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1044-1AP00?","answer":"This part is sourced and quoted to order against an RFQ through our independent distribution network. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings for 3RT1044-1AP00?","answer":"Rated 30 kW at AC-2 400 V for motor switching, and 55 A at AC-4 400 V for reversing/plugging duty. Mechanical life is 10 million operations typical."},{"question":"What compliance documentation does Siemens provide for 3RT1044-1AP00?","answer":"RoHS compliance is documented with a substance prohibition date of 05/01/2012. No UL, CSA, or CE marks appear in the available spec record — confirm certification with Siemens directly if required for your panel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1044-1AP00","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/3RT1044-1AP00 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}}