{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1055-2NP36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1055-2NP36","canonicalUrl":"https://aoctrl.com/siemens/3RT1055-2NP36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1055-2NP36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, S6 frame, 3RT1055-2NP36, coil rated 200-277 V AC/DC, spring-type coil terminals, screw fixing, 172 x 170 x 120 mm.","salesMarkdown":"The spring-type coil terminals speed up wiring — no screwdriver needed on the coil side, which matters when you're landing dozens of contactors on a DIN-rail assembly. The S6 frame carries a rated operational current that depends on the duty cycle. At AC-3 (squirrel-cage motor starting), the maximum switching rate is 750 operations per hour; at AC-4 (plugging/inching), it drops to 130 ops/h — the thermal load of reversing duty limits the mechanical pace. The auxiliary switch is included, rated 10 A at 24 V, 2 A at 48 V and 60 V, and 1 A at 110 V. These ratings govern the auxiliary contact's ability to break inductive pilot loads — a 24 V PLC output driving a contactor coil is well within the 10 A continuous rating, but the 110 V at 1 A figure tells you not to parallel multiple contactor coils on one auxiliary contact. Fastening is by screw fixing, not DIN-rail snap-on — plan for a backplate or mounting rail with drilled holes. Power wiring accepts stranded conductors 25-120 mm² on the main poles; the auxiliary and coil terminals take solid or stranded 2x 0.25-2.5 mm². Minimum clearance: 10 mm upwards, downwards, and sideways, 20 mm forwards. The 170 mm depth and 172 mm height with 120 mm width mean it occupies about 0.02 m² of panel area — factor that into your gland-plate layout and wire-bending space. The contactor's mechanical life is typical 10,000,000 operations. These figures matter for coordination with upstream short-circuit protection — the arcing time window tells you the fault-clearing device must hold off long enough for the contactor to open without welding its main contacts.","metaTitle":"Siemens 3RT1055-2NP36 SIRIUS Power Contactor, S6 Frame, 200-","metaDescription":"Siemens 3RT1055-2NP36 SIRIUS power contactor, S6 frame size, coil 200-277V AC/DC, spring-type coil terminals, screw fixing. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"170 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"120 mm","at AC":"80 ... 90 ms","at DC":"80 ... 90 ms","title":"3RT1055-2NP36","Height":"172 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"25 ... 120 mm²","at 50 Hz":"0.6","at 60 Hz":"0.6","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"200 ... 277 V","description":"power contactor, AC-3e/AC-3 150 A, 75 kW / 400 V AC (50-60 Hz) / DC Uc: 200-277 V PLC input 24 V DC 3-pole, auxiliary contacts 2 NO + 2 NC drive: electronic main circuit: busbar control and auxiliary circuit: spring-loaded terminal","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","Number Of Holes":"1","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 ... +60 °C","Fastening Method":"screw fixing","Full-Scale Value":"1.1","at AC-3e maximum":"750 1/h","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","Solid Or Stranded":"2x (0,25 ... 2,5 mm²)","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","Side-By-Side Mounting":"Yes","at 1000 V rated value":"90 kW","For Auxiliary Contacts":"24 ... 14","Width Of Connection Bar":"17 mm","For Main Current Circuit":"Connection bar","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","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","Thickness Of Connection Bar":"3 mm","at AC-3 rated value maximum":"1 000 V","at AC in hot operating state":"27 W","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"132 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"05/01/2012","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","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","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)","Without Load Current Share Typical":"2.8 W","closing power of magnet coil at DC":"320 W","holding power of magnet coil at DC":"2.8 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 355 A (690 V, 100 kA)","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"9 W","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","voltage at PLC-control input rated value":"24 V","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","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","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","type of PLC-control input according to IEC 60947-1":"Type 2","contact rating of auxiliary contacts according to UL":"A600 / Q600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"1 000 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"500 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":"95 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$274.32","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=262266&mlfb=3RT1055-2NP36"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT1055-2NP36?","answer":"The peer 3RT1055-6QF35 shares the same S6 frame size and coil voltage range but uses screw-type coil terminals instead of spring-type. If your panel wiring is already landed with ring terminals, the 6QF35 drops into the same mounting footprint without rewiring the power circuit — only the coil connection method differs."},{"question":"Where can I buy 3RT1055-2NP36 and how is it quoted?","answer":"This part is sourced through independent industrial-automation distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock position is published here."},{"question":"What compliance documentation does Siemens provide for 3RT1055-2NP36?","answer":"As a SIRIUS product, the 3RT1055-2NP36 carries CE marking for the European market and is designed to meet RoHS and REACH requirements. UL and CSA listings are typical for this series, but specific certification numbers should be verified against the nameplate or the manufacturer's declaration of conformity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1055-2NP36","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/3RT1055-2NP36 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}