{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1036-3XB40-1LA4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1036-3XB40-1LA4","canonicalUrl":"https://aoctrl.com/siemens/3RT1036-3XB40-1LA4","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1036-3XB40-1LA4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S2 power contactor, 3RT1036-3XB40-1LA4, screw-type terminals, 30 kW at 500 V, AC-4 41 A at 400 V, DIN rail mount, IP20 front.","salesMarkdown":"## Siemens SIRIUS 3RT1036-3XB40-1LA4 — S2 Power Contactor The Siemens SIRIUS 3RT1036-3XB40-1LA4 is an S2-frame power contactor rated for motor switching up to 30 kW at 500 V and 41 A in AC-4 duty at 400 V, making it suited for reversing or inching applications on conveyors, hoists, and presses where high electrical wear is expected. ## Switching Performance & Duty Cycle Maximum switching rates vary by duty class: 1,000 operations per hour for AC-1 resistive loads, 800/h for AC-3 motor starting, 400/h for AC-2 slip-ring motors, and 300/h for AC-4 plugging/reversing. Arcing time sits at 10–15 ms. The coil pulls in at 0.7× rated voltage and draws 10 A at 24 V DC, dropping to 2 A at 60 V DC and 0.3 A at 220 V DC. Coil dropout delay is 20–25 ms on DC. ## Installation & Environment Dimensions: 142 mm high × 55 mm wide × 130 mm deep. The main circuit wiring accepts 2× solid conductors 0.25–2.5 mm² or 2× stranded 0.75–25 mm²; the terminal cross-section minimum at 40 °C is 16 mm². Listed as current production. RoHS compliance date is May 1, 2012, confirming exemption-free compliance for EU markets. No official successor or phase-out notice is recorded — the 3RT1036-3XB40-1LA4 remains the active order code for this S2 contactor variant.","metaTitle":"Siemens 3RT1036-3XB40-1LA4 SIRIUS Power Contactor, S2, 30 kW","metaDescription":"Siemens SIRIUS 3RT1036-3XB40-1LA4 power contactor, S2 size, 30 kW at 500 V, AC-4 41 A at 400 V. Screw terminals, DIN rail mount. IP20 front. RoHS compliant. Sourced to order — RFQ","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":"55 mm","at DC":"20 ... 25 ms","Height":"142 mm","Stranded":"2x (0.75 ... 25 mm²)","Arcing Time":"10 ... 15 ms","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"400 1/h","at AC-3 maximum":"800 1/h","at AC-4 maximum":"300 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","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 500 V rated value":"30 kW","at 690 V rated value":"11.4 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"22 kW","at AC-4 at 400 V rated value":"41 A","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"16 mm²","at 60 °C minimum permissible":"16 mm²","Design Of The Surge Suppressor":"with varistor","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"22 kW","at 690 V at 60 °C rated value":"66 kW","at AWG cables for main contacts":"2x (18 ... 2)","For Auxiliary And Control Circuit":"spring-loaded terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 80 A","closing power of magnet coil at DC":"15 W","holding power of magnet coil at DC":"11 W","Surge Voltage Resistance Rated Value":"6 kV","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 NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","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":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Thermal Short-Time Current Limited To 10 S":"400 A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","Required Spacing For Grounded Parts At The Side":"10 mm","contact rating of auxiliary contacts according to UL":"A600 / Q600","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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","number of NC contacts for auxiliary contacts instantaneous contact":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","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=198768&mlfb=3RT1036-3XB40-1LA4","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1036-3XB40-1LA4/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1036-3XB40-1LA4 and get a price?","answer":"This contactor is sourced to order through independent distribution. Submit an RFQ for current pricing and availability confirmation — stock and lead time are confirmed at quote time."},{"question":"What is the closest functional alternative to 3RT1036-3XB40-1LA4?","answer":"The 3RT1044-1FB46 is a higher-rated SIRIUS contactor (different frame size and terminal arrangement). It will not drop into a panel wired for the 3RT1036-3XB40-1LA4 without rewiring — the screw terminal layout and dimensions differ. For a direct replacement, stick with the 3RT1036-3XB40-1LA4 order code."},{"question":"What compliance documentation does this contactor carry?","answer":"RoHS compliance is confirmed with a substance prohibition date of May 1, 2012. The SIRIUS series typically carries UL, CSA, and IEC certifications; specific approval markings should be verified on the nameplate."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1036-3XB40-1LA4","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/3RT1036-3XB40-1LA4 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}}