{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2035-3SF30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2035-3SF30","canonicalUrl":"https://aoctrl.com/siemens/3RT2035-3SF30","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2035-3SF30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2035-3SF30, size S2 power contactor, spring-type terminals, 83-150 V AC/DC coil, 55 mm width, 52 a MTBF.","salesMarkdown":"## SIRIUS S2 Power Contactor — 3RT2035-3SF30 The coil accepts 83 to 150 V AC/DC, with a pick-up threshold of 0.8× rated (about 66 V) and a drop-out of 0.1× rated (about 8 V). Inrush current peaks at 25 A, then settles to 2 VA at both 50 and 60 Hz — a tight coil draw that keeps the control transformer small. Rated operational current is not explicitly listed here, but the S2 frame size and the switching-frequency limits (1 000 ops/h at AC-1, AC-3, AC-3e; 750 at AC-2; 300 at AC-4) tell the story: this contactor is built for moderate-duty motor starting and resistive switching, not high-cycle jogging or plugging. The 55 mm width (three 18 mm modules) fits standard enclosure rail spacing. Depth is 130 mm, height 114 mm — check clearance against the enclosure door or busbar shroud. Clearance distances: 10 mm upwards, downwards, and forwards; 6 mm to the side. Keep these free for arc-flash venting and airflow. ## Termination and Auxiliary Contacts Main and coil connections use spring-type terminals (cage clamp), accepting 2× (0.5 to 2.5 mm²) solid or stranded. No screw torque to verify — a time-saver on repetitive panel builds. The contactor includes an auxiliary switch block (18 to 1 configuration — likely 1 N/O + 1 N/C). Its ratings: 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V. These are the DC-13 inductive load limits; for AC pilot duty, the thermal current is higher. ## Environmental and Reliability The 52 a MTBF (mean time between failures) reflects a mechanical/electrical endurance typical for a SIRIUS S2 — expect millions of operations under rated load. Arcing time is 10 to 20 ms; opening and closing times (AC and DC) are 30 to 55 ms. These are fast enough for most motor starter coordination but should be checked against upstream breaker trip curves for selectivity.","metaTitle":"Siemens 3RT2035-3SF30 SIRIUS Power Contactor, S2, 83-150V Co","metaDescription":"Siemens SIRIUS 3RT2035-3SF30 power contactor, size S2, spring-type terminals, 83-150V AC/DC coil, 55mm wide, 52 a MTBF. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"MTBF":"52 a","Depth":"130 mm","Width":"55 mm","at AC":"30 ... 55 ms","at DC":"30 ... 55 ms","Height":"114 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"2 VA","at 60 Hz":"2 VA","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"6 mm","Rated Value":"83 ... 150 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"750 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"300 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","Full-Scale Value":"1.1","at AC-3e maximum":"1 000 1/h","For Main Contacts":"18 ... 1","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 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Inrush Current Peak":"25 A","Product Designation":"Power 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":"5 000 000","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":"7.5 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.6 A","at 480 V rated value":"40 A","at 50 Hz rated value":"83 ... 150 V","at 500 V rated value":"2 A","at 60 Hz rated value":"83 ... 150 V","at 600 V rated value":"41 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"3 hp","at 200/208 V rated value":"10 hp","at 220/230 V rated value":"15 hp","at 460/480 V rated value":"30 hp","at 575/600 V rated value":"40 hp","Locked-Rotor Current Peak":"0.8 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"0.015 A","Of Main Circuit Rated Value":"6 kV","Safe failure fraction (SFF)":"96 %","Safety-Related Switching On":"No","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"6.6 W","at AC-2 at 400 V rated value":"18.5 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"35 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"01/29/2021","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"10 µs","Locked-Rotor Current Mean Value":"0.34 A","Duration Of Locked-Rotor Current":"230 ms","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"52.8 A","at AC-5b up to 400 V rated value":"33.2 A","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 80A (690V,100kA), aM: 50A (690V,100kA), BS88: 63A (415V,80kA)","Without Load Current Share Typical":"2 W","closing power of magnet coil at DC":"40 W","holding power of magnet coil at DC":"1.6 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 160 A (690 V, 100 kA), aM: 80 A (690 V, 100 kA), BS88: 125 A (415 V, 80 kA)","category according to EN ISO 13849-1":"2","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"2.2 W","for AWG cables for auxiliary contacts":"2x (20 ... 14)","stop category according to EN 60204-1":"0","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","voltage at PLC-control input rated value":"24 V","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Recovery Time After Power Failure Typical":"2.1 s","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","safety device type according to IEC 61508-2":"Type B","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC/DC","hardware fault tolerance according to IEC 61508":"0","Limited To 1 S Switching At Zero Current Maximum":"843 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"596 A; Use minimum cross-section acc. to AC-1 rated value","PFHD with high demand rate according to EN 62061":"7.7E-8 1/h","Limited To 10 S Switching At Zero Current Maximum":"400 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","SIL Claim Limit (subsystem) according to EN 62061":"2","PFDavg with low demand rate according to IEC 61508":"0.0067","performance level (PL) according to EN ISO 13849-1":"c","type of PLC-control input according to IEC 60947-1":"Type 1","contact rating of auxiliary contacts according to UL":"A600 / P600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"5 000 000","operating range factor of the voltage at PLC-control input":"0.8 ... 1.1","Diagnostics Test Interval By Internal Test Function Maximum":"28 800 s","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"16 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"1","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":"https://cdn.aoctrl.com/1433bfd77c29fa3ea8ce31198935ae74.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1413418&mlfb=3RT2035-3SF30","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2035-3SF30/alternatives.json"},"ai":{"faq":[{"question":"What is the MTBF of the 3RT2035-3SF30?","answer":"The listed MTBF is 52 a (years). This is a reliability figure for the electromechanical assembly under typical operating conditions."},{"question":"What type of terminals does the 3RT2035-3SF30 have?","answer":"Spring-type terminals (cage clamp) on both main contacts and coil. They accept 2× (0.5 to 2.5 mm²) solid or stranded wire."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2035-3SF30","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/3RT2035-3SF30 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}}