{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1BB40-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1BB40-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1BB40-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1BB40-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, Size S0, 24 V DC coil, screw-type terminals, IP20 front, 45 mm width, 85 mm height, 101 mm depth.","salesMarkdown":"## SIRIUS S0 power contactor, 24 V DC coil The contactor switches up to 10 A at 24 V for DC loads, and at 400 V AC-4 duty it handles 15.5 A — that's the rating for reversing or plugging applications where the contacts make and break under load. For three-phase motor starting, the contactor is rated 10 kW at 500 V and 11 kW at 690 V, covering common 400 V and 690 V line supplies. The IP20 front enclosure protects against finger contact, while the terminals themselves are IP00 — expect to mount this inside a cabinet with a door or cover. Main circuit connections use screw-type terminals. 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 equivalents: 2x (16 to 12), 2x (14 to 10), 1x 8. That covers most panel wiring up to 10 mm² without needing ferrule adapters. For Type 2 coordination (contactor remains operational after a fault), limit the fuse to 25 A gL/gG. That's the standard selectivity guidance for this frame size.","metaTitle":"Siemens 3RT1025-1BB40-ZX95 SIRIUS Power Contactor, 24 V DC C","metaDescription":"Siemens 3RT1025-1BB40-ZX95 SIRIUS power contactor, Size S0, 24 V DC coil, screw terminals, IP20 front. Active lifecycle. 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":"10 kW","at 690 V rated value":"11 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":"7.5 kW","at AC-4 at 400 V rated value":"15.5 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=284357&mlfb=3RT1025-1BB40-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1BB40-ZX95/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1025-1BB40-ZX95 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional second-source to 3RT1025-1BB40-ZX95?","answer":"The 3RT1023-1AL20 is a smaller-frame SIRIUS contactor (Size S00 vs S0) with a 24 V AC coil, so it won't drop into the same panel without rewiring and a coil supply change. The 3RT1026-1AB00 is a larger-frame S0 with a 24 V DC coil but higher current ratings. For a direct fit, stick with the 3RT1025-1BB40-ZX95."},{"question":"What is 3RT1025-1BB40-ZX95's depth?","answer":"The depth is 101 mm, with a width of 45 mm and height of 85 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1BB40-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/3RT1025-1BB40-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}}