{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1034-1BW44","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1034-1BW44","canonicalUrl":"https://aoctrl.com/siemens/3RT1034-1BW44","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1BW44","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S2, 3RT1034-1BW44, 55 mm width, screw-type terminals, 18.5 kW at 500 V AC-3, IP20 front.","salesMarkdown":"Rated for AC-3 duty at 500 V, it delivers 18.5 kW — the rating that governs motor switching for pumps, fans, and compressors. At 690 V AC-3, the rating drops to 10 kW, reflecting the derating at higher voltage. For AC-2 applications (slip-ring motors), it handles 15 kW at 400 V. Auxiliary contacts are rated for 24 V DC at 10 A, 60 V DC at 2 A, 110 V DC at 1 A, 220 V DC at 0.3 A, and 230 V AC at 6 A — covering typical control-circuit loads like PLC inputs and relay coils. Switching frequency reaches 1 200 cycles/hour at AC-1 (resistive load), 1 000 cycles/hour at AC-3, and 250 cycles/hour at AC-4 — the buyer should match the duty cycle to the application; high-inching duty requires the lower AC-4 limit. Mechanical life is rated at 10 000 000 operations typical, with arcing time of 10–15 ms and DC operating time of 20–30 ms. The contactor operates from -25 °C to +60 °C and stores from -55 °C to +80 °C, with pollution degree 3 (conductive pollution, typical for industrial enclosures). Screw-type terminals accept solid conductors: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), max 2x (0.75–4 mm²). Stranded conductors: 2x (0.75–25 mm²). Solid or stranded: 2x (0.75–16 mm²). At 40 °C, the minimum permissible conductor cross-section is 16 mm².","metaTitle":"Siemens 3RT1034-1BW44 SIRIUS Power Contactor, 55 mm, 18.5 kW","metaDescription":"Siemens 3RT1034-1BW44 SIRIUS power contactor, size S2, 55 mm width, rated 18.5 kW at 500 V AC-3, screw terminals, IP20 front. Active production, available to order. Request a quote","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"179 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"55 mm","at DC":"20 ... 30 ms","Height":"112 mm","Stranded":"2x (0.75 ... 25 mm²)","Arcing Time":"10 ... 15 ms","Rated Value":"48 V","On The Front":"IP20","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","at AC-1 maximum":"1 200 1/h","at AC-2 maximum":"750 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Full-Scale Value":"1.1","Size Of Contactor":"S2","Solid Or Stranded":"2x (0.75 ... 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 500 V rated value":"18.5 kW","at 690 V rated value":"10 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"15 kW","at AC-4 at 400 V rated value":"29 A","Substance Prohibitance (Date)":"01.05.2012","at 40 °C minimum permissible":"16 mm²","at 60 °C minimum permissible":"10 mm²","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"18 kW","at 690 V at 60 °C rated value":"54 kW","at AWG cables for main contacts":"2x (18 ... 2)","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 63 A","closing power of magnet coil at DC":"13.3 W","holding power of magnet coil at DC":"13.3 W","reference code acc. to IEC 81346-2":"Q","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"fuse gL/gG: 125 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","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":"320 A","Finely Stranded Without Core End Processing":"2x (0.75 ... 16 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","Required Spacing For Grounded Parts At The Side":"6 mm","contact rating of auxiliary contacts according to UL":"A600 / Q600","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":"2","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=173884&mlfb=3RT1034-1BW44","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1034-1BW44/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1034-1BW44 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote (RFQ) to confirm current availability and pricing."},{"question":"What are the key ratings of 3RT1034-1BW44?","answer":"It is a size S2 power contactor rated 18.5 kW at 500 V AC-3, 10 kW at 690 V AC-3, with screw-type terminals and IP20 front protection."},{"question":"What compliance documentation does Siemens provide for 3RT1034-1BW44?","answer":"The part carries a substance prohibition date of 01.05.2012, indicating RoHS compliance from that date. Standard Siemens documentation includes the datasheet and CE declaration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1034-1BW44","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/3RT1034-1BW44 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}}