{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2536-1AH20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2536-1AH20","canonicalUrl":"https://aoctrl.com/siemens/3RT2536-1AH20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2536-1AH20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor, size S2, 24 VDC coil, screw-type terminals, 75 mm wide, 114 mm high, 130 mm deep, snap-on 35 mm DIN rail.","salesMarkdown":"It snaps onto standard 35 mm DIN rail per DIN EN 50022 and can be mounted in any orientation — ±180° rotation on a vertical surface, plus ±22.5° tilt forward or backward. That flexibility means it fits into tight panel layouts without reworking the gland plate. Width is 75 mm, height 114 mm, depth 130 mm. Clearance: 50 mm above and below, 10 mm to the side, zero forward or backward — so you can pack it close to the backplane or adjacent devices as long as vertical breathing room is respected. The auxiliary contact block handles 10 A at 24 V AC or 230 V AC — that's the same current rating for both the low-voltage control side and the line-voltage signal side, so you don't need separate derating for the 24 V loop. At 48 V AC it drops to 2 A, and at 400 V AC it's 3 A. Coil pickup and dropout timing: arcing time is 10 to 20 ms, and the operate time at AC is 10 to 18 ms. That's fast enough for most motor-starting sequences but worth noting if you're sequencing contactors in a reversing starter — the overlap window is tight. Screw terminals accept solid or stranded wire: two conductors of 0.5 to 1.5 mm², or two of 0.75 to 2.5 mm². That covers standard control wiring (1.5 mm² for signal, 2.5 mm² for power feed-through). No special ferrules needed, but stranded wire benefits from bootlace ferrules for a clean clamp.","metaTitle":"Siemens 3RT2536-1AH20 SIRIUS Contactor, S2, 24 VDC Coil, Scr","metaDescription":"Siemens SIRIUS contactor 3RT2536-1AH20, size S2, 24 VDC coil, screw terminals, 75 mm wide. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"130 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"75 mm","at AC":"10 ... 18 ms","Height":"114 mm","Upwards":"50 mm","Forwards":"0 mm","at 50 Hz":"0.36","at 60 Hz":"0.39","Backwards":"0 mm","Downwards":"50 mm","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"1 000 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN 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)","Product Brand Name":"SIRIUS","Product Designation":"contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"10 A","at 400 V rated value":"3 A","at 440 V rated value":"1 A","at 50 Hz rated value":"48 V","at 500 V rated value":"2 A","at 60 Hz rated value":"48 V","at 600 V rated value":"0.1 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","Relative Humidity Minimum":"10 %","per NC contact rated value":"41 A","per NO contact rated value":"41 A","Of Main Circuit Rated Value":"6 kV","Substance Prohibitance (Date)":"10/01/2014","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 80 A (690 V, 100 kA)","at 24 V per NC contact rated value":"55 A","at 24 V per NO contact rated value":"55 A","At Contactor For Auxiliary Contacts":"Screw-type terminals","at 110 V per NC contact rated value":"12.5 A","at 110 V per NO contact rated value":"25 A","at 220 V per NC contact rated value":"2.5 A","at 220 V per NO contact rated value":"5 A","at 230 V per NC contact rated value":"15 kW","at 230 V per NO contact rated value":"15 kW","at 400 V per NC contact rated value":"22 kW","at 400 V per NO contact rated value":"22 kW","at 440 V per NC contact rated value":"0.135 A","at 440 V per NO contact rated value":"0.27 A","With Type Of Coordination 1 Required":"gG: 160 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","number of NC contacts for main contacts":"2","number of NO contacts for main contacts":"2","reference code according to IEC 81346-2":"Q","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","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","at ambient temperature 40 °C rated value":"70 A","at ambient temperature 60 °C rated value":"60 A","mirror contact according to IEC 60947-4-1":"Yes","apparent holding power of magnet coil at AC":"17.2 VA","apparent pick-up power of magnet coil at AC":"190 VA","Type Of Voltage Of The Control Supply Voltage":"AC","for 3-phase AC motor at 460/480 V rated value":"25 hp","Limited To 1 S Switching At Zero Current Maximum":"546 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"443 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"334 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"241 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"196 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / P600","Inductive Power Factor With Closing Power Of The Coil":"0.72","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.36","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gG: 10 A","minimum cross-section in main circuit at maximum AC-1 rated value":"25 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","AWG number as coded connectable conductor cross section for main contacts":"18 ... 1","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","power loss [W] at AC-3 at 400 V for rated value of the operational current per conductor":"4 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5114017818d0caab2ff23fa220945c37.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=20431&mlfb=3RT2536-1AH20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2536-1AH20/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3RT2536-1AH20 and how is it quoted for volume purchases?","answer":"It is sourced through independent distribution channels and quoted to order against an RFQ. Volume pricing and lead time are confirmed at the time of quote."},{"question":"Will 3RT2536-1AH20 drop into a panel that was specified around 3RT2536-1AC20 without rewiring?","answer":"Both are SIRIUS size S2 contactors with the same footprint and DIN-rail mounting, so the mechanical fit is identical. The 1AH20 variant uses a 24 VDC coil with screw terminals; the 1AC20 uses a different coil voltage. If the coil voltage matches, it's a direct swap — no rewiring of the power circuit needed."},{"question":"What is 3RT2536-1AH20's listed depth?","answer":"The depth is 130 mm, with zero clearance required forward or backward."},{"question":"What compliance documentation does this brand provide for 3RT2536-1AH20?","answer":"As a Siemens SIRIUS product, it carries CE marking and is designed to meet relevant IEC/EN standards for contactors. Specific UL/CSA or RoHS/REACH declarations are available from the manufacturer or distributor upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2536-1AH20","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/3RT2536-1AH20 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}}