{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-1BD44","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-1BD44","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-1BD44","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1BD44","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1023-1BD44, Size S0 power contactor, 24 VDC coil, 45 mm width, screw terminals, IP20 front.","salesMarkdown":"It mounts via screw or snap-on onto a 35 mm DIN rail per DIN EN 50022, fitting a standard panel footprint at 45 mm wide, 85 mm tall, and 150 mm deep. With a 24 VDC coil drawing 5.4 W both for closing and holding, it's sized for continuous-duty control circuits. The main contacts are screw-type terminals accepting 2x (0.5 to 4 mm²) solid or 2x (1 to 10 mm²) stranded — covers most panel wiring up to 10 mm². Rated switching capacity varies by voltage and duty: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 4.5 kW at 500 V or 5.5 kW at 690 V for AC-3 motor starting. For AC-2 duty at 400 V it's rated 4 kW; AC-4 at 400 V delivers 8.5 A for reversing or inching applications. Operating temperature range is -25 to +60 °C, with a maximum altitude of 2 000 m and pollution degree 3 (conductive pollution, typical for industrial environments). The 6 mm clearance to side walls is the minimum for heat dissipation and arc containment. Two instantaneous auxiliary contacts (NO/NC configurable) are built in for feedback or interlocking. For short-circuit coordination, Type 1 requires a 63 A gL/gG fuse; Type 2 requires a 25 A gL/gG fuse — choose based on whether you accept contact weld in a fault.","metaTitle":"Siemens 3RT1023-1BD44 SIRIUS Power Contactor, Size S0, 45 mm","metaDescription":"Siemens SIRIUS 3RT1023-1BD44 power contactor, Size S0, 45 mm width, 24 VDC coil, 10 A at 24 V, AC-3 motor switching. Current lifecycle stage. Sourced to order.","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","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"42 V","On The Front":"IP20","Initial Value":"0.8","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Of The Terminal":"IP00","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Full-scale value":"1.1","Size of contactor":"S0","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","Instantaneous Contact":"2","Side-by-side mounting":"Yes","For Main Current Circuit":"screw-type terminals","Single Or Multi-Stranded":"2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 mm²","at AC-2 at 400 V rated value":"4 kW","at AC-4 at 400 V rated value":"8.5 A","Closing power of magnet coil at DC":"5.4 W","Holding power of magnet coil at DC":"5.4 W","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 25 A","at AWG conductors for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","With Type Of Coordination 1 Required":"fuse gL/gG: 63 A","Reference code acc. to DIN EN 81346-2":"Q","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","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","at ambient temperature 40 °C rated value":"40 A","Type of voltage of the control supply voltage":"DC","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","Of The Contactor With Added Electronics-Compatible 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=221995&mlfb=3RT1023-1BD44","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1BD44/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-1BD44","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/3RT1023-1BD44 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}}