{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1026-1AP04-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1026-1AP04-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT1026-1AP04-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AP04-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S0 power contactor, 3RT1026-1AP04-1AA0, 50 Hz coil at 230 V, 3 NO main contacts, screw terminals, 45 mm width, IP20 front.","salesMarkdown":"## SIRIUS S0 power contactor for motor switching at 50 Hz The Siemens 3RT1026-1AP04-1AA0 is a SIRIUS S0-frame power contactor with a 50 Hz coil rated at 230 V. For AC-2 at 400 V it handles 11 kW, covering slip-ring motor starting. ## Wiring and terminal capacity Main circuit terminals are screw-type, accepting 2x (1 to 2.5 mm²) stranded or 2x (2.5 to 6 mm²) solid, with a maximum of 2x 10 mm². The auxiliary/coil terminals take 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Strip length and ferrule sizing follow standard practice — 8 mm for the smaller terminals, 10 mm for the main power wires. For Type 2 coordination (limited weld risk), use a 35 A gL/gG fuse. That selectivity choice affects panel SCCR and should be locked in at the BOM stage. ## Environmental limits and approvals The coil operating range at 50 Hz is 0.8 to 1.1 times the rated voltage (230 V), so it picks up reliably down to about 184 V and holds in up to 253 V.","metaTitle":"Siemens 3RT1026-1AP04-1AA0 SIRIUS S0 Power Contactor, 50 Hz","metaDescription":"Siemens 3RT1026-1AP04-1AA0 SIRIUS S0 power contactor, 50 Hz coil at 230 V, 15.5 A AC-4 at 400 V. Current production. Quoted to order. DIN rail mount, 45 mm wide.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"140 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 50 Hz":"0.8 ... 1.1","At The Side":"6 mm","On The Front":"IP20","1 Rated Value":"50 Hz","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","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 50 Hz rated value":"230 V","at 500 V rated value":"11 kW","at 690 V rated value":"11 kW","Instantaneous Contact":"2","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":"11 kW","at AC-4 at 400 V rated value":"15.5 A","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 35 A","at AWG conductors for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","With Type Of Coordination 1 Required":"fuse gL/gG: 100 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","Apparent holding power of magnet coil at AC":"7.8 V·A","Apparent pick-up power of magnet coil at AC":"61 V·A","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.82","Inductive power factor with the holding power of the coil":"0.24","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=173926&mlfb=3RT1026-1AP04-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1026-1AP04-1AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT1026-1AP04-1AA0?","answer":"The 3RT1023-1AL20 is a smaller SIRIUS S0 contactor with a different coil voltage and lower AC-4 rating. It will not drop into the same panel without rewiring the coil circuit and verifying the motor load current fits the lower rating. The 3RT1016 variants are physically smaller S00 frames — different footprint, different terminal layout."},{"question":"What is the depth of 3RT1026-1AP04-1AA0?","answer":"The depth is 140 mm. Combined with the 45 mm width and 85 mm height, it fits standard S0 panel cutouts and leaves room for wiring gutters in a DIN-rail enclosure."},{"question":"What wire sizes does the 3RT1026-1AP04-1AA0 accept?","answer":"Main circuit screw terminals accept 2x (1 to 2.5 mm²) stranded or 2x (2.5 to 6 mm²) solid, max 2x 10 mm². Auxiliary/coil terminals accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). AWG equivalents are 2x (16 to 12) and 2x (14 to 10) for main contacts, 1x 8 maximum."},{"question":"Where can I buy 3RT1026-1AP04-1AA0?","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 commitment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1026-1AP04-1AA0","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/3RT1026-1AP04-1AA0 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}}