{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-3BP40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-3BP40","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-3BP40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-3BP40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1023-3BP40, Size S0, 230 V AC coil, screw-type terminals, IP20 front, 45 mm width.","salesMarkdown":"## SIRIUS power contactor 3RT1023-3BP40 — S0 frame, 230 V AC coil It carries a 230 V AC coil and is rated for motor switching across common supply voltages: 4.5 kW at 500 V, 5.5 kW at 690 V in AC-3 duty, with a rated operational current of 6 A at 230 V and 3 A at 400 V. For resistive loads (AC-12), it's good for 10 A maximum. The coil draws 5.4 W on both pick-up and hold, so there's no thermal spike from a power-saving circuit — the coil stays at full power continuously. Side-by-side mounting is permitted with 6 mm spacing at the side. Screw terminals accept 2x (0.25 to 2.5 mm²) solid or stranded, up to 2x 10 mm² maximum. For type 2 coordination (no weld under short circuit), use a 25 A gL/gG fuse; type 1 allows a 63 A fuse.","metaTitle":"Siemens 3RT1023-3BP40 SIRIUS Power Contactor, 230 V AC Coil,","metaDescription":"Siemens 3RT1023-3BP40 SIRIUS power contactor, Size S0, 230 V AC coil, screw terminals. Rated 5.5 kW at 690 V AC-3. Current production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"100 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"85 mm","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"230 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":"0","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 (0.25 ... 1.5 mm²)","Number of poles for main current circuit":"3","at AWG conductors for auxiliary contacts":"2x (24 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"spring-loaded terminals","at ambient temperature 40 °C rated value":"40 A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","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=386717&mlfb=3RT1023-3BP40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-3BP40/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1023-3BP40 and what is the availability?","answer":"This contactor is sourced to order through independent distribution channels. Submit an RFQ for current pricing and availability confirmation at quote time."},{"question":"Will 3RT1023-3BP40 drop into a panel built for 3RT1023-1AL20?","answer":"Both are S0-frame SIRIUS contactors with the same 45 mm width and DIN-rail mounting, so the mechanical fit is identical. The key difference is the coil voltage — 3RT1023-3BP40 uses a 230 V AC coil, while 3RT1023-1AL20 uses a different coil voltage. Verify coil supply before swapping."},{"question":"What are the main contact ratings for 3RT1023-3BP40?","answer":"AC-3 motor ratings: 4.5 kW at 500 V, 5.5 kW at 690 V. AC-2: 4 kW at 400 V. AC-4: 8.5 A at 400 V. AC-12 resistive: 10 A. Coil is 230 V AC, 5.4 W pick-up and hold."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-3BP40","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/3RT1023-3BP40 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}}