{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2027-1NB30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2027-1NB30","canonicalUrl":"https://aoctrl.com/siemens/3RT2027-1NB30","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2027-1NB30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT2027-1NB30, S0 frame size, 24 V DC coil, screw-type terminals, 10 A rated switching capacity at 24 V, snap-on mounting on 35 mm DIN rail.","salesMarkdown":"## Part Identity and Fit It mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715, and the mounting position allows +/-180° rotation on a vertical surface plus +/-22.5° tilt forward/backward, giving flexibility in tight enclosures. The coil is rated 21–28 V DC, with a peak inrush of 3 A. At the 24 V rated value, the contactor switches 10 A; at 48 V and 60 V, it handles 2 A. This makes it suitable for 24 V DC control circuits common in automotive and machine tool lines. Main contact wiring accepts solid or stranded conductors from 1 to 10 mm², and auxiliary contacts accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²). The coil uses screw-type terminals, consistent with panel-builder practices for secure terminations. Rated for up to 1,000 operations per hour in AC-1 resistive load duty, 750 ops/h in AC-2 and AC-3 motor switching, and 250 ops/h in AC-4 (plugging/inching). The AC-3e rating also allows 750 ops/h. These limits define the thermal cycling capability — exceeding them risks contact welding or premature wear, especially in high-inertia or reversing applications. Arcing time is specified at 10 ms, with operate and release times of 30–50 ms for both AC and DC coils. This is typical for a contactor of this class and ensures predictable switching behavior in sequenced control schemes. Clearance distances required: 10 mm upwards, downwards, and forwards; 6 mm at the side. These are minimums for arc flash containment and must be respected in panel layout to avoid phase-to-phase or phase-to-ground faults. Dimensions are 85 mm height, 45 mm width, and 107 mm depth — the S0 footprint fits standard 45 mm-wide DIN-rail slots, common in modular panel designs.","metaTitle":"Siemens 3RT2027-1NB30 SIRIUS Power Contactor, S0 Frame, 24V","metaDescription":"Siemens 3RT2027-1NB30 SIRIUS power contactor, S0 frame, 24V DC coil, 10A rated at 24V. Screw terminals, snap-on DIN rail mount. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"107 mm","Solid":"1 ... 10 mm²","Width":"45 mm","at AC":"30 ... 50 ms","at DC":"30 ... 50 ms","Height":"85 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"1 ... 10 mm²","at 50 Hz":"0.86","at 60 Hz":"0.82","Downwards":"10 mm","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","Rated Value":"21 ... 28 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"750 1/h","at AC-3 maximum":"750 1/h","at AC-4 maximum":"250 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":"1.3","at AC-3e maximum":"750 1/h","For Main Contacts":"16 ... 8","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":"S0","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Inrush Current Peak":"3 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":"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":"5 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.6 A","at 480 V rated value":"27 A","at 50 Hz rated value":"21 ... 28 V","at 500 V rated value":"2 A","at 60 Hz rated value":"21 ... 28 V","at 600 V rated value":"27 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":"2 hp","at 200/208 V rated value":"10 hp","at 220/230 V rated value":"10 hp","at 460/480 V rated value":"20 hp","at 575/600 V rated value":"25 hp","Locked-Rotor Current Peak":"0.52 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"45 mA","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"6.3 W","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"22 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"30 µs","Locked-Rotor Current Mean Value":"0.3 A","Duration Of Locked-Rotor Current":"180 ms","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"44 A","at AC-5b up to 400 V rated value":"26.5 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 50A (690V,100kA), aM: 25A (690V, 100kA), BS88: 50A (415V, 80kA)","Without Load Current Share Typical":"2 W","closing power of magnet coil at DC":"5.9 W","holding power of magnet coil at DC":"1.4 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 125A (690V,100kA), aM: 50A (690V,100kA), BS88: 125A (415V,80kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"2.3 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","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), 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)","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC/DC","Limited To 1 S Switching At Zero Current Maximum":"499 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"341 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"260 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"199 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"162 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":"690 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":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"10 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$93.98","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e828df1ab7d4474d7fd163de1ff7a498.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=149696&mlfb=3RT2027-1NB30","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2027-1NB30/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"Height 85 mm, width 45 mm, depth 107 mm. Clearances: 10 mm up/down/forward, 6 mm at sides."},{"question":"What conductor sizes does the 3RT2027-1NB30 accept?","answer":"Main contacts accept solid or stranded 1–10 mm². Auxiliary contacts accept 2x (0.5–1.5 mm²) or 2x (0.75–2.5 mm²)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2027-1NB30","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/3RT2027-1NB30 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}}