{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1015-1KB42-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1015-1KB42-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RT1015-1KB42-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1015-1KB42-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1015-1KB42-ZX95, size S00, 24 V DC coil, screw-type terminals, varistor surge suppression, IP20 front.","salesMarkdown":"## Siemens 3RT1015-1KB42-ZX95 — SIRIUS Size S00 Power Contactor, 24 V DC Coil The varistor built into the coil circuit handles surge suppression — no separate suppressor module needed. At 400 V AC-3 duty it's rated for 3 kW motor switching, and the mechanical life of 30 million operations tells you the armature and spring set are good for a long production run before the contacts wear. If you're feeding it from a 24 VDC power supply, budget that 2.3 W per contactor continuously. The AC-3 motor rating at 400 V is 3 kW, which matches a standard 4-pole induction motor of that size. At 690 V the same contactor handles 4 kW, so the voltage bump gives you headroom on the same frame. The AC-4 rating of 6.5 A at 400 V covers reversing or plugging duty where the contacts break full-load current — that's a tougher thermal cycle than AC-3, and the S00 frame handles it without upsizing. The screw-type terminals on the main circuit accept 2x (0.5...1.5 mm²) solid or 2x (0.75...2.5 mm²) stranded, with a max of 2x (0.75...4 mm²). For AWG, that's 2x (20...16) solid or 2x (18...14) stranded. The 6 mm side clearance to adjacent devices is the minimum for heat dissipation — stack them tighter and you'll need to derate the continuous current. ## Panel Integration The S00 frame measures 45 mm wide, 57.5 mm high, and 72 mm deep.","metaTitle":"Siemens 3RT1015-1KB42-ZX95 SIRIUS Power Contactor, 24 VDC, S","metaDescription":"Siemens 3RT1015-1KB42-ZX95 SIRIUS power contactor, 24 VDC coil, size S00, screw terminals, varistor suppression, current lifecycle. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"45 mm","Height":"57.5 mm","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.7","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Of The Terminal":"IP20","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Full-scale value":"1.25","Size of contactor":"S00","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":"30 000 000","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":"3.5 kW","at 690 V rated value":"4 kW","Instantaneous Contact":"0","Side-by-side mounting":"Yes","For Main Current Circuit":"screw-type terminals","Single Or Multi-Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","at AC-2 at 400 V rated value":"3 kW","at AC-4 at 400 V rated value":"6.5 A","Design of the surge suppressor":"with varistor","Closing power of magnet coil at DC":"2.3 W","Holding power of magnet coil at DC":"2.3 W","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 20 A","at AWG conductors for main contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","With Type Of Coordination 1 Required":"fuse gL/gG: 35 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":"18 A","Type of voltage of the control supply voltage":"DC","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A"}},"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=342298&mlfb=3RT1015-1KB42-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1015-1KB42-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT1015-1KB42-ZX95?","answer":"The standard 3RT1015-1BB42 shares the same S00 frame, 24 V DC coil, and screw-terminal construction. The difference is the -ZX95 carries a varistor surge suppressor built in; the -1BB42 does not. If your panel already has external suppression, the -1BB42 drops into the same footprint without rewiring. For a direct functional swap with the same suppression, stick with the -ZX95 variant."},{"question":"Where can I buy 3RT1015-1KB42-ZX95 and how is it quoted?","answer":"This part is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ through the storefront for a firm price and lead time on your volume."},{"question":"What is the depth of 3RT1015-1KB42-ZX95?","answer":"The depth is 72 mm. Combined with the 45 mm width and 57.5 mm height, the S00 frame fits standard 35 mm DIN rail enclosures with room for wiring clearance on the front."},{"question":"What wire sizes does the 3RT1015-1KB42-ZX95 accept?","answer":"The screw terminals accept 2x (0.5...1.5 mm²) solid or 2x (0.75...2.5 mm²) stranded, with a maximum of 2x (0.75...4 mm²). In AWG that's 2x (20...16) solid or 2x (18...14) stranded, and 1x 12 AWG."},{"question":"Will 3RT1015-1KB42-ZX95 drop into a panel specified for 3RT1015-1BB42?","answer":"Yes — same S00 frame, same 45 x 57.5 x 72 mm footprint, same DIN rail mounting, same screw terminals. The only difference is the -ZX95 includes a built-in varistor surge suppressor; the -1BB42 does not. No rewiring or panel modification needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1015-1KB42-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/3RT1015-1KB42-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}}