{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-1BM44","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-1BM44","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-1BM44","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1BM44","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1023-1BM44, S0 frame, 220 VAC coil, screw-type terminals, IP20 front, 45 x 85 x 150 mm.","salesMarkdown":"## SIRIUS S0 power contactor, 220 VAC coil Both main and auxiliary/control circuits use screw-type terminals. Main terminals accept 2x (1.0–2.5 mm²) solid/stranded, 2x (2.5–6 mm²), or max 2x 10 mm². Auxiliary terminals accept 2x (0.5–1.5 mm²) solid, 2x (0.75–2.5 mm²), or max 2x (0.75–4 mm²). AWG equivalents are listed for both. Coil power draw is 5.4 W DC for both closing and holding — a single value, meaning the magnet circuit does not drop to a lower hold power. This matters for control-transformer sizing and DC-supply budgeting in the panel. For Type 1 coordination (welding allowed but no fire risk), the fuse rating is gL/gG 63 A. These are the manufacturer's specified limits for the main circuit. Storage temperature range is wider but not specified here — the operating range governs panel placement and derating. ## Switching ratings and load types AC-2 duty (slip-ring motors) at 400 V: 4 kW. AC-4 duty (plugging/inching) at 400 V: 8.5 A. DC switching ratings are provided per voltage: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, 6 A at 230 V, 3 A at 400 V. These cover the auxiliary contact block's DC load-breaking capability — relevant for PLC inputs, DC brake coils, or indicator lamps. Motor power ratings at higher line voltages: 4.5 kW at 500 V, 5.5 kW at 690 V — typical for 500 V or 690 V industrial networks (mining, marine, heavy industry). Substance prohibitance date is listed as 01.07.2006, aligning with RoHS compliance (EU RoHS took effect July 2006).","metaTitle":"Siemens 3RT1023-1BM44 SIRIUS Power Contactor, 220 VAC Coil,","metaDescription":"Siemens 3RT1023-1BM44 SIRIUS power contactor, 220 VAC coil, S0 frame, screw terminals, IP20 front. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"150 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"45 mm","Height":"85 mm","Rated Value":"220 V","On The Front":"IP20","Initial Value":"0.8","Of The Terminal":"IP00","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":"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":"4.5 kW","at 690 V rated value":"5.5 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"4 kW","at AC-4 at 400 V rated value":"8.5 A","Substance Prohibitance (Date)":"01.07.2006 00:00:00","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 25 A","closing power of magnet coil at DC":"5.4 W","holding power of magnet coil at DC":"5.4 W","reference code acc. to IEC 81346-2":"Q","With Type Of Coordination 1 Required":"fuse gL/gG: 63 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)","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":"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=8672&mlfb=3RT1023-1BM44","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1BM44/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1023-1BM44 and how do I get a price?","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 inquiry for a firm commercial offer."},{"question":"What is 3RT1023-1BM44's listed depth?","answer":"The depth is 150 mm, with a width of 45 mm and height of 85 mm — the standard S0 frame footprint for DIN-rail mounting."},{"question":"What compliance documentation does this brand provide for 3RT1023-1BM44?","answer":"The part carries a RoHS compliance date of 01.07.2006 and an IEC 81346-2 reference code Q. The manufacturer provides standard declarations of conformity for CE, UL, and CSA upon request through the supply channel."},{"question":"Will 3RT1023-1BM44 drop into a panel specified around 3RT1016-1BB42?","answer":"Both are SIRIUS S0-frame contactors with the same 45 mm width and DIN-rail mounting, so the mechanical footprint is identical. The key difference is the coil voltage — the 3RT1023-1BM44 uses a 220 VAC coil, while the 3RT1016-1BB42 uses a different coil voltage. Verify the control circuit voltage before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-1BM44","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/3RT1023-1BM44 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}}