{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1326-1AL20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1326-1AL20","canonicalUrl":"https://aoctrl.com/siemens/3RT1326-1AL20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1326-1AL20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, S0 frame, 4 NO main contacts, 11 kW at 400 V AC-2, screw terminals, 50/60 Hz, IP20 front, 35 mm DIN rail mount.","salesMarkdown":"The Siemens 3RT1326-1AL20 is a SIRIUS power contactor in the S0 frame size, rated 11 kW at 400 V in AC-2 duty — that's the current it can switch for slip-ring motor loads, not the resistive-heater rating. Four normally-open main contacts give you a single-pole make per phase plus a spare, which matters if you're switching a three-phase motor and need an independent NO leg for a holding circuit or auxiliary load. The 50/60 Hz coil tolerance (0.8...1.1 at 50 Hz, 0.85...1.1 at 60 Hz) means it holds in across typical line fluctuations without a separate voltage regulator. Side-by-side mounting is permitted, but the 6 mm side clearance to adjacent devices is the minimum for heat dissipation; pack them tighter and you'll need to derate. If your panel spec calls for Type 2, the 35 A fuse is the hard limit — don't oversize it or you lose the coordination. The main circuit terminals accept up to 10 mm² stranded, which is good for the 11 kW motor circuit without a separate terminal block. The built-in auxiliary contacts (4 NO) are rated 10 A at 24 V, dropping to 0.3 A at 220 V. That's typical for control circuits — the 24 V rating handles a PLC output or relay coil directly; the 220 V rating is enough for a pilot light or contactor coil but not a motor starter. Mechanical endurance is 10 million cycles, so it'll outlast most panel rebuilds.","metaTitle":"Siemens 3RT1326-1AL20 SIRIUS Power Contactor, 4 NO, 11 kW AC","metaDescription":"Siemens 3RT1326-1AL20 SIRIUS power contactor, S0 frame, 4 NO main contacts, 11 kW at 400 V AC-2, 50/60 Hz, screw terminals, IP20 front, current production stage, available to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"91 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"61 mm","Height":"85 mm","Maximum":"2 000 m","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","At The Side":"6 mm","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 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 60 Hz rated value":"230 V","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":"11 kW","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 (20 ... 16), 2x (18 ... 14), 1x 12","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":"4","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":"4","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":"8.4 V·A","Apparent pick-up power of magnet coil at AC":"64 V·A","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.72","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=530560&mlfb=3RT1326-1AL20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1326-1AL20/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for the 3RT1326-1AL20?","answer":"The 3RT1023-1AL20 is a smaller-frame SIRIUS contactor with similar 4 NO main contacts but a lower AC-2 rating. It will not drop into a panel wired for the S0 frame without re-drilling the mounting holes and re-terminating the power wiring — the footprint and terminal spacing differ."},{"question":"Where can I buy the 3RT1326-1AL20 and how is it quoted?","answer":"This part is sourced to order through independent distribution channels. Submit an RFQ with your quantity and target delivery; availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation does Siemens provide for the 3RT1326-1AL20?","answer":"Siemens provides RoHS and REACH declarations, plus IEC/EN 60947-4-1 compliance documentation for this contactor series. UL and CSA certifications are available on request for the SIRIUS product family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1326-1AL20","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/3RT1326-1AL20 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}}