{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT5035-1BB40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT5035-1BB40","canonicalUrl":"https://aoctrl.com/siemens/3RT5035-1BB40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT5035-1BB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, size S2, 3RT5035-1BB40, 24 VDC coil, screw terminals, 55 mm width, 130 mm depth.","salesMarkdown":"At 400 V and 60 °C ambient, this contactor is rated for 38 kW motor output; at 690 V and 60 °C, it handles 66 kW. The coil holds at 24 VDC nominal, drawing 6 A at rated value. The 55 mm width and 130 mm depth let it fit standard S2 contactor spacing on the DIN rail — plan for that footprint when laying out a multi-contactor motor control center. Rated for AC-3e switching up to 690 V, it handles the inductive load of squirrel-cage motors during starting and running. The 63 A gL/gG fuse recommendation gives you the short-circuit coordination baseline for the branch circuit. ## Mounting and wiring notes Main circuit terminals accept 2x (0.75 to 16 mm²) solid or stranded wire, or 2x (18 to 2 AWG).","metaTitle":"Siemens 3RT5035-1BB40 SIRIUS Power Contactor, 24 VDC, 55 mm","metaDescription":"Siemens SIRIUS 3RT5035-1BB40 power contactor, 24 VDC coil, size S2, screw terminals. Current production. Rated 38 kW at 400 V 60 °C. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"130 mm","Width":"55 mm","at DC":"1 500 1/h","Height":"112 mm","Rated Value":"24 V","During Storage":"-55 ... +80 °C","at AC-1 maximum":"1 200 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"300 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022","at AC-3e maximum":"1 000 1/h","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 (0.75 ... 16 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"Power contactor","at 24 V rated value":"6 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 690 V rated value":"11.4 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"03/01/2017","at 40 °C minimum permissible":"16 mm²","at 60 °C minimum permissible":"16 mm²","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"22 kW","at 400 V at 60 °C rated value":"38 kW","at 690 V at 60 °C rated value":"66 kW","for AWG cables for main contacts":"2x (18 ... 2)","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","With Type Of Assignment 2 Required":"fuse gL/gG: 63 A","closing power of magnet coil at DC":"13.3 W","holding power of magnet coil at DC":"13.3 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"fuse gL/gG: 125 A","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","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":"1 faulty switching per 100 million (17 V, 1 mA)","at ambient temperature 40 °C rated value":"60 A","at ambient temperature 60 °C rated value":"55 A","Finely Stranded Without Core End Processing":"2x (0.75 ... 16 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","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"}},"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=579992&mlfb=3RT5035-1BB40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT5035-1BB40/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT5035-1BB40 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer."},{"question":"What is 3RT5035-1BB40's listed depth (130 mm) on this component line?","answer":"The depth is 130 mm. Combined with the 55 mm width and 112 mm height, it fits the standard S2 contactor footprint on 35 mm DIN rail."},{"question":"What compliance documentation does this brand provide for 3RT5035-1BB40?","answer":"The part carries a substance prohibitance date of 03/01/2017, indicating RoHS compliance. As a Siemens SIRIUS product, it is designed to meet relevant IEC and UL standards for industrial control equipment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT5035-1BB40","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/3RT5035-1BB40 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}}