{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2544-1NP30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2544-1NP30","canonicalUrl":"https://aoctrl.com/siemens/3RT2544-1NP30","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2544-1NP30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor, order code 3RT2544-1NP30, S3 size, 175-280 V AC coil, screw and snap-on DIN rail mounting, 70 mm width.","salesMarkdown":"The 3RT2544-1NP30: The coil is rated for 175-280 V AC, drawing 3.1 VA at both 50 Hz and 60 Hz, with an inrush peak of 65 A. That 65 A inrush means the control transformer or PLC output driving this coil needs to handle the initial surge, not just the holding VA. The 70 mm width and 140 mm height are standard for the S3 frame; the 152 mm depth is the dimension to watch when sizing the enclosure depth — a 200 mm deep enclosure gives enough clearance for wiring and arc chute access. This helps when fitting into tight or angled sub-panels. The zero forward/backward clearance means it can be stacked directly against other devices on the same DIN rail without additional spacing — useful for dense panel layouts. Main power terminals accept solid conductors: 2x (0.5-1.5 mm²) and 2x (0.75-2.5 mm²). For stranded conductors: 2x (6-16 mm²), 2x (10-50 mm²), and 1x (10-70 mm²). The coil terminals are screw-type. The 70 mm² single-stranded termination on the main circuit is generous for an S3 contactor — it can take a 2/0 AWG equivalent, which covers most motor branch circuits up to about 65 A full load. If you need a functional cross-reference, the smaller-frame 3RT2028-1BB40 is a different physical size (S0 vs S3) and will not share the same mounting footprint or terminal capacity without panel rework.","metaTitle":"Siemens 3RT2544-1NP30 SIRIUS Contactor, 175-280 VAC Coil, S3","metaDescription":"Siemens 3RT2544-1NP30 SIRIUS contactor, 175-280 VAC coil, S3 frame, 70 mm wide, screw and snap-on DIN rail mount, 10 million mechanical cycles, current production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"152 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"70 mm","at AC":"38 ... 57 ms","at DC":"38 ... 57 ms","Height":"140 mm","Upwards":"10 mm","Forwards":"0 mm","Stranded":"2x (6 ... 16 mm²), 2x (10 ... 50 mm²), 1x (10 ... 70 mm²)","at 50 Hz":"3.1 VA","at 60 Hz":"3.1 VA","Backwards":"0 mm","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","Rated Value":"175 ... 280 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"900 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","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":"S3","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Inrush Current Peak":"65 A","Product Designation":"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":"6 A","at 400 V rated value":"3 A","at 440 V rated value":"1.8 A","at 50 Hz rated value":"175 ... 280 V","at 500 V rated value":"2 A","at 60 Hz rated value":"175 ... 280 V","at 600 V rated value":"0.1 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","Locked-Rotor Current Peak":"1.2 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"10 mA","per NC contact rated value":"65 A","per NO contact rated value":"65 A","Of Main Circuit Rated Value":"8 kV","Substance Prohibitance (Date)":"09/01/2017","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"5 µs","Locked-Rotor Current Mean Value":"0.44 A","Duration Of Locked-Rotor Current":"150 ms","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gR: 250 A (690 V, 100 kA)","at 24 V per NC contact rated value":"100 A","at 24 V per NO contact rated value":"100 A","closing power of magnet coil at DC":"76 W","holding power of magnet coil at DC":"1.8 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","at 110 V per NC contact rated value":"100 A","at 110 V per NO contact rated value":"100 A","at 220 V per NC contact rated value":"7 A","at 220 V per NO contact rated value":"7 A","at 230 V per NC contact rated value":"18.5 kW","at 230 V per NO contact rated value":"18.5 kW","at 400 V per NC contact rated value":"30 kW","at 400 V per NO contact rated value":"30 kW","at 440 V per NC contact rated value":"0.42 A","at 440 V per NO contact rated value":"0.42 A","With Type Of Coordination 1 Required":"gG: 250 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","number of NC contacts for main contacts":"2","number of NO contacts for main contacts":"2","reference code according to IEC 81346-2":"Q","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":"4","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","at ambient temperature 40 °C rated value":"100 A","at ambient temperature 60 °C rated value":"90 A","mirror contact according to IEC 60947-4-1":"Yes","apparent holding power of magnet coil at AC":"3.1 VA","apparent pick-up power of magnet coil at AC":"163 VA","Type Of Voltage Of The Control Supply Voltage":"AC/DC","for 3-phase AC motor at 460/480 V rated value":"25 hp","Limited To 1 S Switching At Zero Current Maximum":"880 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"880 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"691 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"437 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"344 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / P600","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","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gG: 10 A","minimum cross-section in main circuit at maximum AC-1 rated value":"35 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","AWG number as coded connectable conductor cross section for main contacts":"10 ... 2","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","power loss [W] at AC-3 at 400 V for rated value of the operational current per conductor":"3.5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fb918960dd2a48789b6a44ffa1363bda.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=630090&mlfb=3RT2544-1NP30","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2544-1NP30/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions for panel fit?","answer":"Width is 70 mm, height is 140 mm, depth is 152 mm. Clearance: 10 mm top/bottom/sides, 0 mm front/back."},{"question":"What is the coil voltage and VA draw?","answer":"Coil rated voltage is 175-280 V AC. It draws 3.1 VA at both 50 Hz and 60 Hz, with an inrush peak of 65 A."},{"question":"What wire sizes does the main circuit accept?","answer":"Solid: 2x (0.5-1.5 mm²) and 2x (0.75-2.5 mm²). Stranded: 2x (6-16 mm²), 2x (10-50 mm²), and 1x (10-70 mm²)."},{"question":"Does the 3RT2544-1NP30 replace the 3RT2028-1BB40?","answer":"No, they are different frame sizes. The 3RT2544-1NP30 is an S3 frame; the 3RT2028-1BB40 is an S0 frame. They have different mounting footprints and terminal capacities, so panel rework would be required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2544-1NP30","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/3RT2544-1NP30 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}}