{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-1BB40-ZW95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-1BB40-ZW95","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-1BB40-ZW95","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1BB40-ZW95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 24 VDC coil, screw-type terminals, 4.5 kW at 500 V / 5.5 kW at 690 V AC-3, 45 mm wide, IP20 front.","salesMarkdown":"## SIRIUS 3RT1023-1BB40-ZW95 — 24 VDC Power Contactor, Size S0 Its 24 VDC coil draws 5.4 W holding power, and the contactor is rated for AC-3 duty at 4.5 kW at 500 V and 5.5 kW at 690 V — covering common 400 V and 690 V three-phase motor circuits across Europe and export markets. The coil's pick-up and hold power are identical at 5.4 W DC, which simplifies the DC supply sizing — no inrush surge beyond the steady-state draw. Rated operational current at AC-12 (resistive load) is 10 A maximum, while the AC-4 (plugging/reversing) rating is 8.5 A at 400 V — useful for high-duty-cycle applications like hoists or reversing conveyors where the contactor makes and breaks stalled-rotor current. Short-circuit protection coordination is specified for both Type 1 and Type 2. This lets the panel builder choose between tighter protection and higher fault-clearing capacity based on the application's risk profile. Main current circuit terminals are screw-type, accepting solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and up to 2x (0.75 to 4 mm²). For stranded conductors, the range is 2x (1 to 2.5 mm²) and 2x (2.5 to 6 mm²), with a maximum of 2x 10 mm². AWG equivalents for main contacts are 2x (16 to 12), 2x (14 to 10), and 1x 8. This covers most panel wiring from control circuits up to moderate motor power feeds.","metaTitle":"Siemens 3RT1023-1BB40-ZW95 SIRIUS Power Contactor, 24 VDC Co","metaDescription":"Siemens SIRIUS 3RT1023-1BB40-ZW95 power contactor, size S0, 24 VDC coil, screw terminals, 4.5 kW at 500 V / 5.5 kW at 690 V. Currently in 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=307795&mlfb=3RT1023-1BB40-ZW95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-1BB40-ZW95/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 3RT1023-1BB40-ZW95?","answer":"The depth is 101 mm, measured from the DIN rail mounting surface to the front of the contactor."},{"question":"What wire sizes does the 3RT1023-1BB40-ZW95 accept?","answer":"Solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded: 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), max 2x 10 mm². AWG: 2x (16 to 12), 2x (14 to 10), 1x 8."},{"question":"Where can I buy 3RT1023-1BB40-ZW95?","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":"Will 3RT1023-1BB40-ZW95 drop into a panel specified for 3RT1023-1AL20?","answer":"Both are SIRIUS size S0 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 1BB40-ZW95 uses 24 VDC, while the 1AL20 uses a different coil voltage — verify the control circuit voltage before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-1BB40-ZW95","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-ZW95 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}}