{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1023-3BB40-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1023-3BB40-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RT1023-3BB40-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1023-3BB40-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, Size S0, 24 V DC coil, screw-type terminals, 45 mm width, snap-on DIN-rail mount.","salesMarkdown":"The Siemens 3RT1023-3BB40-ZX95 is a SIRIUS power contactor in the Size S0 frame — the compact workhorse for motor switching in control panels up to 4 kW at 400 V AC-2 duty. The 24 V DC coil pulls 5.4 W on close and holds at the same power, so no extra hold-in resistor needed. The 45 mm width and 85 mm height leave room for a three-phase feed-through and an auxiliary contact block on the side. Side-by-side mounting is allowed — no derating gap needed for standard resistive loads, though the 6 mm side clearance is the minimum for airflow. AC-4 at 400 V is 8.5 A, for reversing or inching duty where the contacts see full locked-rotor current each time. The DC coil ratings (10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V) cover auxiliary interposing relays and PLC outputs.","metaTitle":"Siemens 3RT1023-3BB40-ZX95 SIRIUS Power Contactor, 24 VDC Co","metaDescription":"Siemens SIRIUS 3RT1023-3BB40-ZX95 power contactor, Size S0, 24 VDC coil, 10 A at 24 VDC, screw terminals, DIN-rail mount. Current production. Sourced to order. Get a quote.","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":"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 (0.25 ... 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=326044&mlfb=3RT1023-3BB40-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1023-3BB40-ZX95/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1023-3BB40-ZX95 and how do I get a price?","answer":"This contactor is sourced through independent distribution. Submit an RFQ — availability and current pricing are confirmed at quote time."},{"question":"Will 3RT1023-3BB40-ZX95 drop into a panel that was specified around 3RT1023-1AL20 without rewiring?","answer":"Both share the Size S0 frame and 45 mm width, so the mechanical footprint and DIN-rail mounting are identical. The main difference is the coil voltage — 3RT1023-1AL20 uses a 230 V AC coil, while this part uses 24 V DC. Verify the control transformer and wiring before swapping."},{"question":"What compliance documentation does this brand provide for 3RT1023-3BB40-ZX95?","answer":"Siemens SIRIUS contactors are typically supplied with a declaration of conformity covering IEC/EN 60947-4-1, and RoHS/REACH compliance declarations are available on request. Specific UL/CSA file numbers should be verified against the nameplate marking."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1023-3BB40-ZX95","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/3RT1023-3BB40-ZX95 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}}