{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT5035-1AN20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT5035-1AN20","canonicalUrl":"https://aoctrl.com/siemens/3RT5035-1AN20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT5035-1AN20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S2 power contactor, 3RT5035-1AN20, screw-type terminals, 38 kW at 400 V 60°C, 55 mm wide, active lifecycle.","salesMarkdown":"## SIRIUS S2 power contactor — 3RT5035-1AN20 The Siemens 3RT5035-1AN20 is a SIRIUS S2-size power contactor rated for motor switching at 38 kW at 400 V at 60 °C ambient, or 66 kW at 690 V at 60 °C. Screw-type terminals on the main circuit accept 2x (0.75 to 16 mm²) solid or stranded, with an AWG equivalent of 2x (18 to 2). Rated operational current in AC-3e duty is not directly listed, but the 38 kW at 400 V figure places it in the range of a 65–75 A AC-3 contactor — sized for a 75 hp (55 kW) motor at 400 V under standard conditions. The 690 V rating at 66 kW confirms it handles higher-voltage motors without derating the power class. Side-by-side mounting is permitted with no derating gap required. Dimensions: 55 mm wide, 112 mm high, 115 mm deep. The S2 footprint is the mid-size in the SIRIUS contactor family — wider than the S0 (45 mm) but narrower than the S3 (70 mm). Fits standard 600 mm wide enclosures with room for auxiliary contact blocks on the front or side. ## Coil and auxiliary contact ratings The auxiliary contact block (integrated or add-on) is rated 6 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 110 V. The 220 V rating drops to 0.3 A — a non-linear derating typical of DC-interrupting contacts. For 50/60 Hz control supplies, the coil draws 0.35 A at both frequencies. Electrical life depends on duty: 5 000 operations per hour at AC, up to 1 200/h in AC-1 (resistive), 1 000/h in AC-3 (motor start/run), and 300/h in AC-4 (plugging/inching). The lower AC-4 figure reflects the higher arc energy during reversing or jogging cycles. Substance prohibitance per RoHS applies from March 1, 2017 — the part complies with the EU RoHS recast (2011/65/EU) and its amendments. Insulation voltage rated at 690 V, matching the maximum AC-3e operating voltage.","metaTitle":"Siemens 3RT5035-1AN20 SIRIUS S2 Power Contactor, 38 kW at 40","metaDescription":"Siemens SIRIUS S2 power contactor 3RT5035-1AN20, 38 kW at 400 V 60°C, screw terminals, 55 mm wide, active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"115 mm","Width":"55 mm","at AC":"5 000 1/h","Height":"112 mm","at 50 Hz":"0.35","at 60 Hz":"0.35","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 50 Hz rated value":"220 V","at 60 Hz rated value":"220 V","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","at 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","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"fuse gL/gG: 125 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","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":"AC","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=579989&mlfb=3RT5035-1AN20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT5035-1AN20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT5035-1AN20?","answer":"This part is sourced and quoted to order through independent distribution against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings for 3RT5035-1AN20?","answer":"Motor power is 38 kW at 400 V at 60 °C and 66 kW at 690 V at 60 °C. Mechanical life is 10 million operations typical. The contactor is 55 mm wide and mounts on 35 mm DIN rail."},{"question":"Will 3RT5035-1AN20 drop into a panel specified around 3RT5035-1AH00?","answer":"Both are SIRIUS S2 contactors with identical dimensions (55 x 112 x 115 mm) and the same DIN-rail mounting. The 1AH00 variant has a different coil voltage; verify coil compatibility before substitution. The main power terminals and auxiliary contact positions are the same."},{"question":"What compliance documentation is available for 3RT5035-1AN20?","answer":"The contactor complies with RoHS (substance prohibitance effective March 1, 2017). Insulation voltage is rated 690 V. Standard IEC/EN 60947-4-1 applies for contactors; UL/CSA listings are typical for the SIRIUS family but not confirmed in this data set."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT5035-1AN20","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/3RT5035-1AN20 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}}