{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1336-3XB40-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1336-3XB40-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT1336-3XB40-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1336-3XB40-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, Size S2, 24 V DC coil, screw-type terminals, varistor surge suppressor, 3RT1336-3XB40-0LA2.","salesMarkdown":"The DC switching curve is the key selection parameter here. At 24 V rated value the contactor handles 10 A; at 60 V it drops to 2 A; at 110 V it's 1 A; at 220 V it's 0.3 A. That steep derating is normal for DC interruption — there's no zero-crossing, so the arc has to be stretched and quenched by the contact gap. If you're switching a DC motor brake or a solenoid valve at 24 V, the 10 A rating gives you headroom; at higher DC voltages the contactor is really only for signal-level or small auxiliary loads. The contactor occupies 73 mm width, 142 mm height, 130 mm depth. Main circuit terminals accept solid or stranded wire: 2x (0.75... 16 mm²) or 2x (0.75... 25 mm²) stranded, and 2x (0.25... 2.5 mm²) solid. AWG equivalents for the main contacts are 2x (18... 2). The auxiliary circuit terminals are rated for 6 kV impulse withstand; the main circuit is rated 8 kV. That impulse rating tells you this contactor is designed for industrial environments with moderate surge exposure — it's not a toy for clean-room signal switching. The substance prohibition (RoHS) compliance date is 05/01/2012, so it's RoHS-compliant. The contactor is rated for 10,000,000 typical mechanical operations. The built-in varistor surge suppressor is a practical detail — it saves you an external suppression module on the coil circuit, which simplifies panel wiring and reduces component count.","metaTitle":"Siemens 3RT1336-3XB40-0LA2 SIRIUS Power Contactor, 24 V DC,","metaDescription":"Siemens SIRIUS power contactor 3RT1336-3XB40-0LA2, 24 V DC coil, Size S2 frame, screw terminals, varistor suppressor. Current lifecycle stage. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"130 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"73 mm","at DC":"15 ... 30 ms","Height":"142 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"2x (0.75 ... 25 mm²)","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"24 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Type Of Voltage":"DC","at AC-1 maximum":"1 000 1/h","lifecycle_stage":"current","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Full-Scale Value":"1.25","Size Of Contactor":"S2","Solid Or Stranded":"2x (0.75 ... 16 mm²)","Product Brand Name":"SIRIUS","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","Instantaneous Contact":"0","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","Of Main Circuit Rated Value":"8 kV","at maximum AC-1 rated value":"16 mm²","Substance Prohibitance (Date)":"05/01/2012","Design Of The Surge Suppressor":"with varistor","at AWG cables for main contacts":"2x (18 ... 2)","Of Auxiliary Circuit Rated Value":"6 kV","Function Module For Communication":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"fuse gL/gG: 63 A","closing power of magnet coil at DC":"15 W","holding power of magnet coil at DC":"11 W","With Type Of Coordination 1 Required":"fuse gL/gG: 160 A","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","number of NO contacts for main contacts":"4","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"4","voltage at PLC-control input rated value":"24 V","Product Function Short Circuit Protection":"No","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"2","Type Of Voltage Of The Control Supply Voltage":"DC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"1 000 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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 gL/gG: 10 A","Of The Contactor With Added Electronically Optimized 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=470821&mlfb=3RT1336-3XB40-0LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1336-3XB40-0LA2/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1336-3XB40-0LA2 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote."},{"question":"What is the DC switching capacity at different voltages?","answer":"At 24 V rated value it switches 10 A; at 60 V it switches 2 A; at 110 V it switches 1 A; at 220 V it switches 0.3 A. For AC loads, it switches 6 A at 230 V and 3 A at 400 V."},{"question":"What compliance documentation does this contactor carry?","answer":"The RoHS substance prohibition compliance date is 05/01/2012. The contactor is a Siemens SIRIUS product, which typically carries UL, CSA, and CE certifications as standard for the series."},{"question":"Will 3RT1336-3XB40-0LA2 drop into a panel specified for 3RT1044-1FB46?","answer":"Both are Siemens SIRIUS power contactors, but the 3RT1336-3XB40-0LA2 is a Size S2 frame with a 24 V DC coil and built-in varistor, while the 3RT1044-1FB46 is a different frame size and coil voltage. They are not direct mechanical or electrical drop-in replacements without verifying the mounting footprint and wiring scheme."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1336-3XB40-0LA2","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/3RT1336-3XB40-0LA2 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}}