{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-1BB40-ZW98","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-1BB40-ZW98","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-1BB40-ZW98","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1BB40-ZW98","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 24 VDC coil, screw-type terminals, IP20 front, 5.5 kW at 690 V.","salesMarkdown":"The coil pulls 5.4 W on close and holds at 5.4 W DC, so the control transformer sizing is straightforward: one contactor per 24 VDC supply branch, no inrush derating needed. The 45 mm width and 85 mm height fit the standard S0 panel footprint. The AC-3 motor-switching rating is the one that matters for a pump, fan, or compressor: 4.5 kW at 500 V and 5.5 kW at 690 V. AC-2 at 400 V is 4 kW, for slip-ring motor starting. The AC-12 maximum operating current is 10 A, for resistive loads like heater banks. The coil switching capacity at 24 V is 10 A; at 60 V it drops to 2 A, at 110 V to 1 A, and at 220 V to 0.3 A — that is the auxiliary contact rating, not the main poles. Short-circuit coordination: with type 2 assignment (no welding after a fault), use a 25 A gL/gG fuse upstream. With type 1 coordination (welding allowed, no fire or shock), a 63 A gL/gG fuse works. Main circuit screw terminals accept 2x (0.5 to 1.5 mm²) solid, 2x (0.75 to 2.5 mm²) solid, or max 2x (0.75 to 4 mm²) solid. Stranded: 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or max 2x 10 mm². AWG equivalents: 2x (16 to 12), 2x (14 to 10), 1x 8. The depth is 101 mm — verify clearance to the back panel or enclosure door, especially with aux blocks or suppressor modules added on the front.","metaTitle":"Siemens 3RT1023-1BB40-ZW98 SIRIUS Power Contactor, 24 VDC, S","metaDescription":"Siemens 3RT1023-1BB40-ZW98 SIRIUS power contactor, 24 VDC coil, size S0, screw terminals, IP20 front. Rated 5.5 kW at 690 V. 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","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"24 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 (0.5 ... 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=273264&mlfb=3RT1023-1BB40-ZW98","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1BB40-ZW98/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1023-1BB40-ZW98 and get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."},{"question":"What is the closest functional second-source for 3RT1023-1BB40-ZW98?","answer":"The 3RT1023-1AL20 is a functional peer — same S0 frame, same 24 VDC coil, but with different terminal style or auxiliary configuration. Verify the terminal type and aux contact count before substituting; the mounting footprint and main pole ratings are the same."},{"question":"What is the depth of 3RT1023-1BB40-ZW98?","answer":"The depth is 101 mm. Account for that when sizing the enclosure depth, especially with add-on blocks on the front."},{"question":"What solid conductor sizes does 3RT1023-1BB40-ZW98 accept?","answer":"The main screw terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and max 2x (0.75 to 4 mm²) solid conductors."},{"question":"Will 3RT1023-1BB40-ZW98 drop into a panel specified around 3RT1023-1AL20 without rewiring?","answer":"The mounting footprint (S0, 45 mm width, 35 mm DIN rail) and main pole ratings are identical, so it fits mechanically. Check the terminal type — the -1BB40 uses screw terminals; the -1AL20 may use spring-cage or a different aux contact arrangement. If the wiring is screw-to-screw compatible, it drops in without rework."},{"question":"What compliance documentation does Siemens provide for 3RT1023-1BB40-ZW98?","answer":"As a SIRIUS product, it carries CE marking for the European market and is designed to meet RoHS and REACH requirements. The reference code per DIN EN 81346-2 is Q. Specific UL/CSA certification status should be confirmed from the nameplate or Siemens declaration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-1BB40-ZW98","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/3RT1023-1BB40-ZW98 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}}