{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1055-6QP35","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1055-6QP35","canonicalUrl":"https://aoctrl.com/siemens/3RT1055-6QP35","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1055-6QP35","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1055-6QP35 power contactor, S6 frame size, 200-277 V AC 50/60 Hz coil, screw-type terminals, 3-pole, 170 mm depth, 140 mm width, 172 mm height.","salesMarkdown":"The 3RT1055-6QP35: The pick-up range is 0.8x to 1.1x of rated value, so at 200 V nominal the coil sees minimum 160 V and maximum 220 V before the magnet drops out. For a conveyor motor running at AC-3, that means one start every ~4.8 seconds continuous — well within a normal material-handling cycle, but a high-speed indexing application would exceed the AC-4 ceiling. The 10 A at 24 V figure is the limit for a single auxiliary circuit; daisy-chaining multiple loads across one contact reduces the current per load. ## Mounting, clearances, and enclosure fit Mounting is screw fixing only — no DIN-rail clip on this S6 frame. The unit bolts directly to the backplate through a single 9 mm hole. The 170 mm depth (172 mm height, 140 mm width) means the contactor occupies about 0.024 m³ of panel volume — plan the enclosure depth at least 190 mm to clear the forward arc space. Degree of protection is IP00 on the terminals, IP20 on the front with the cover or box terminal installed. In a panel with IP54 or higher rating, the contactor itself doesn't need a separate enclosure — the panel door provides the seal. For open-chassis installations, the IP20 front cover is mandatory. ## Sourcing and lifecycle — active production, quoted to order For a panel in an unconditioned enclosure in a hot climate, the 55 °C ceiling means the contactor must be derated above 40 °C ambient — the 1.1x full-scale factor at 55 °C is the thermal limit, not the continuous current rating.","metaTitle":"Siemens 3RT1055-6QP35 SIRIUS Power Contactor, 200-277V Coil","metaDescription":"Siemens 3RT1055-6QP35 SIRIUS power contactor, S6 frame, 200-277V AC coil, screw terminals. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"170 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"140 mm","at AC":"80 ... 90 ms","at DC":"80 ... 90 ms","title":"3RT1055-6QP35","Height":"172 mm","Maximum":"2 000 m","Upwards":"10 mm","Forwards":"20 mm","Stranded":"25 ... 120 mm²","at 50 Hz":"0.5","at 60 Hz":"0.8 ... 1.1","Downwards":"10 mm","Arcing time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"200 ... 277 V","description":"Power contactor, AC-3 150 A, 75 kW / 400 V AC (50-60 Hz) / DC operation 200-277 V UC Auxiliary contacts 1 NO + 1 NC 3-pole, Size S6 Busbar connections Drive: electronic with PLC / SIMOCODE interface and RLT signal","On The Front":"IP00; IP20 on the front with cover / box terminal","Initial Value":"0.8","Mounting type":"screw fixing","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Number of holes":"1","Of The Terminal":"IP00","at AC-1 maximum":"800 1/h","at AC-2 maximum":"300 1/h","at AC-3 maximum":"750 1/h","at AC-4 maximum":"130 1/h","lifecycle_stage":"current","Auxiliary switch":"Yes","During Operation":"-25 ... +55 °C","Full-scale value":"1.1","Diameter of holes":"9 mm","Mounting position":"with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back","Size of contactor":"S6","Product brand name":"SIRIUS","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":"10 000 000","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":"30 hp","at 400 V rated value":"3 A","at 440 V rated value":"1.4 A","at 480 V rated value":"156 A","at 50 Hz rated value":"200 ... 277 V","at 500 V rated value":"2 A","at 60 Hz rated value":"200 ... 277 V","at 600 V rated value":"144 A","at 690 V rated value":"1 A","Instantaneous Contact":"1","Side-by-side mounting":"Yes","at 1000 V rated value":"90 kW","For Auxiliary Contacts":"18 ... 14","Width of connection bar":"17 mm","For Main Current Circuit":"Connection bar","Single Or Multi-Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","at 200/208 V rated value":"50 hp","at 220/230 V rated value":"60 hp","at 460/480 V rated value":"125 hp","at 575/600 V rated value":"150 hp","Of Main Circuit Rated Value":"8 kV","Thickness of connection bar":"3 mm","at AC-3 rated value maximum":"1 000 V","at maximum AC-1 rated value":"95 mm²","at AC-2 at 400 V rated value":"75 kW","at AC-4 at 400 V rated value":"132 A","Design of the surge suppressor":"with varistor","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"162 A","at AC-5b up to 400 V rated value":"124 A","Function Module For Communication":"No","Closing power of magnet coil at DC":"320 W","Holding power of magnet coil at DC":"2.8 W","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"gG: 315 A (690 V, 100 kA), aM: 200 A (690 V, 50 kA), BS88: 315 A (415 V, 50 kA)","At Contactor For Auxiliary Contacts":"Screw-type terminals","Protection against electrical shock":"finger-safe when touched vertically from front acc. to IEC 60529","at AWG conductors for main contacts":"4 ... 250 kcmil","Mirror contact acc. to IEC 60947-4-1":"Yes","With Type Of Coordination 1 Required":"gG: 355 A (690 V, 100 kA)","Reference code acc. to DIN EN 81346-2":"Q","with high demand rate acc. to SN 31920":"1 000 000","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","Voltage at PLC-control input rated value":"24 V","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","at ambient temperature 40 °C rated value":"185 A","Type of voltage of the control supply voltage":"AC/DC","Limited To 1 S Switching At Zero Current Maximum":"2 727 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"1 831 A; Use minimum cross-section acc. to AC-1 rated value","Suitability for use safety-related switching OFF":"Yes","Limited To 10 S Switching At Zero Current Maximum":"1 300 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"850 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"703 A; Use minimum cross-section acc. to AC-1 rated value","between coil and main contacts acc. to EN 60947-1":"690 V","positively driven operation acc. to IEC 60947-5-1":"No","Contact rating of auxiliary contacts according to UL":"A600 / Q600","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Operating range factor of the voltage at PLC-control input":"0.8 ... 1.1","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","Of The Contactor With Added Electronics-Compatible Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/48191814343ef1de12d436857500061f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=95817&mlfb=3RT1055-6QP35"},"ai":{"faq":[{"question":"Where can I buy 3RT1055-6QP35 and get a price?","answer":"The 3RT1055-6QP35 is sourced to order against your BOM quantity through independent distribution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1055-6QP35","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/3RT1055-6QP35 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}