{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-1BA40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-1BA40","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-1BA40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1BA40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1023-1BA40, S0 frame, 12 VDC coil, screw terminals, 45 mm wide, IP20 front, snap-on DIN rail mount.","salesMarkdown":"The 12 VDC coil draws 5.4 W on pickup and hold — same figure, so no economizer circuit inside; the coil stays at full power as long as it's energized. Rated operational current varies by voltage and duty. At 24 V it switches 10 A; at 230 V it handles 6 A; at 400 V it's rated 3 A. For motor loads under AC-2 duty (slip-ring motors, starting/stopping under load) at 400 V it's good for 4 kW. Under AC-4 (plugging, inching, reversing) at 400 V it carries 8.5 A — that's the tougher duty cycle, so if your application does frequent reversals, size on the AC-4 number, not the AC-1 or AC-3 line. Electrical life will be shorter and depends on switching current and duty. With Type 1 coordination (contactor may need replacement after a fault) use a 63 A gL/gG fuse. Width is 45 mm, height 85 mm, depth 101 mm — fits a standard S0 footprint. Main circuit terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) solid or stranded. Auxiliary terminals take 2x (1 to 2.5 mm²) or max 2x 10 mm². The screw terminals are the same type throughout — no mix of spring-cage and screw on this variant.","metaTitle":"Siemens 3RT1023-1BA40 SIRIUS Power Contactor, 12 VDC Coil, S","metaDescription":"Siemens 3RT1023-1BA40 SIRIUS power contactor, 12 VDC coil, S0 frame, 45 mm wide, 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":"101 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":"12 V","On The Front":"IP20","Initial Value":"0.8","Of The Terminal":"IP00","lifecycle_stage":"current","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","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","Ambient Temperature During Operation":"-25 ... +60 °C","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":"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=248735&mlfb=3RT1023-1BA40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1BA40/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1023-1BA40 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 RFQ for a firm price and lead time."},{"question":"What is 3RT1023-1BA40's listed depth?","answer":"The listed depth is 101 mm, with a width of 45 mm and height of 85 mm — standard S0 frame dimensions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-1BA40","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/3RT1023-1BA40 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}}