{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT7036-1AL20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT7036-1AL20","canonicalUrl":"https://aoctrl.com/siemens/3RT7036-1AL20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT7036-1AL20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT7036-1AL20, size S2 contactor, 3 NO main contacts, screw-type terminals, AC control supply, 690 V rated insulation voltage, IP20 front / IP00 terminal protection.","salesMarkdown":"The Siemens 3RT7036-1AL20 is a size S2 contactor from the SIRIUS family, with three normally-open main poles rated for AC-3 switching up to 690 V. Front protection is IP20 — safe for finger contact in a closed panel. The terminal area is rated IP00, meaning the connection points are exposed; standard practice is to keep this inside a locked enclosure or behind a cover. ## Terminals and wiring Both main and auxiliary/control circuits use screw-type terminals. The main current circuit accepts 2x (0.5 to 1.5 mm²) solid or stranded, or 2x (0.75 to 2.5 mm²). Finely stranded wire needs core-end processing (ferrules) for the same cross-sections. That's a standard panel-builder detail — no special crimp tool required beyond what's already on the bench. The product extension allows adding an auxiliary switch block, which is useful when you need feedback contacts for a PLC input or a status signal back to the control system. ## Coil and switching performance The magnet coil draws 0.76 W to close and 0.35 W to hold at DC — low holding power means less heat in a densely packed cabinet. Control supply voltage is AC type. Maximum switching rate is 800 operations per hour under AC-3 duty, dropping to 250 per hour under AC-4 (plugging/reversing). That's enough for most conveyor or pump cycling; if you're jogging a motor repeatedly, stay under the AC-4 limit or the contactor will overheat. Auxiliary contacts are rated for PLC-level signals — 17 V, 5 mA — so you can wire them directly to a digital input card without a separate interface relay. That saves a terminal and a DIN-rail slot. ## Protection coordination For type of coordination 2 (limited damage under short circuit), the required upstream fuse is a gL/gG NH 3NA rated 80 A. For type of coordination 1 (no damage to the contactor, but the starter may need replacement), the fuse can go up to 160 A. This matters when you're matching the contactor to an existing motor branch circuit — verify which coordination type your panel design calls for.","metaTitle":"Siemens 3RT7036-1AL20 Contactor, 3-Pole, 690V AC-3, S2 Size","metaDescription":"Siemens 3RT7036-1AL20 SIRIUS contactor, 3 NO main contacts, 690V AC-3 max, screw terminals, DIN rail snap-on. S2 size, IP20 front. Currently in production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"115 mm","Width":"55 mm","Height":"112 mm","at 50 Hz":"0.36","at 60 Hz":"0.38","On The Front":"IP20","During Storage":"-25 ... +70 °C","Of The Terminal":"IP00","at AC-3 maximum":"800 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","During Operation":"-10 ... +55 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S2","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Degree Of Pollution":"3","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","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","Insulation Voltage Rated Value":"690 V","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","With Type Of Assignment 2 Required":"gL/gG NH 3NA: 80 A","closing power of magnet coil at DC":"0.76 W","holding power of magnet coil at DC":"0.35 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"gL/gG NH 3NA: 160 A","shock resistance with sine pulse at AC":"15g / 5 ms, 8g / 10 ms","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","Contact Reliability Of Auxiliary Contacts":"acceptability for PLC control (17 V, 5 mA)","Type Of Voltage Of The Control Supply Voltage":"AC","operating voltage at AC-3 rated value maximum":"690 V","operational current at DC-13 at 220 V rated value":"0.3 A","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","number of NC contacts for auxiliary contacts instantaneous contact":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","Connectable Conductor Cross-Section For Main Contacts Finely Stranded With Core End Processing":"25 mm²","Connectable Conductor Cross-Section For Auxiliary Contacts Finely Stranded With Core End Processing":"0.5 ... 2.5 mm²"}},"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=1534082&mlfb=3RT7036-1AL20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT7036-1AL20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RT7036-1AL20?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for your volume."},{"question":"Will the 3RT7036-1AL20 drop into a panel specified for a 3RT5036-1AP00?","answer":"Both are S2 size contactors on the same 35 mm DIN-rail footprint, so the mechanical fit is the same. The 3RT7036-1AL20 uses an AC coil versus the 3RT5036-1AP00's DC coil — verify your control voltage before swapping. Terminal layout and screw-type connections are consistent across the SIRIUS S2 family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT7036-1AL20","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/3RT7036-1AL20 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}}