{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2027-2NB30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2027-2NB30","canonicalUrl":"https://aoctrl.com/siemens/3RT2027-2NB30","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2027-2NB30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT2027-2NB30, size S0, 24 VDC coil, spring-type terminals, 45 mm width, 107 mm depth.","salesMarkdown":"## Siemens 3RT2027-2NB30 SIRIUS Power Contactor — Size S0, 24 VDC Coil, Spring-Terminal It carries a 24 VDC coil rated 21–28 V with an inrush peak of 3 A and a holding current draw of 0.7 A initial, then settling to a full-scale value of 1.3 A. The main contacts are rated for AC-3 duty at 750 operating cycles per hour maximum, with a mechanical life of 10 million operations typical. Spring-type terminals accept solid or stranded conductors from 1 to 10 mm² on the main circuit, and 2 × 0.5 to 2.5 mm² for auxiliary wiring. The contactor mounts via screw or snap-on to 35 mm DIN rail per DIN EN 60715, occupying 45 mm of panel width with a depth of 107 mm and height of 102 mm. Clearance requirements: 10 mm upward, forward, and downward; 6 mm at the sides. An auxiliary switch is included. The contactor's switching capacity varies by duty class. For AC-2 and AC-3 (motor starting and running) the rate is 750 cycles per hour, and for AC-4 (plugging, inching) it drops to 250 cycles per hour. The AC-3e rating also permits 750 cycles per hour. These rates define the thermal limits of the contactor under repeated switching — exceeding them accelerates contact wear. Operating times are consistent across AC and DC coil supplies: 30 to 50 ms for both make and break. Arcing time is a tight 10 ms. The power factor at 50 Hz is 0.86; at 60 Hz it is 0.82. Auxiliary contact ratings: at 24 V rated value, 10 A; at 48 V, 2 A; at 60 V, 2 A; at 110 V, 1 A. The main contact configuration is listed as 18... 8, indicating normally-open and normally-closed pole counts.","metaTitle":"Siemens 3RT2027-2NB30 SIRIUS Power Contactor, Size S0, 24 VD","metaDescription":"Siemens 3RT2027-2NB30 SIRIUS power contactor, size S0, 24 VDC coil, spring-type terminals, 45 mm width, 107 mm depth. Rated for AC-3 switching at 750 cycles/h. Current production s","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":"102 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":"Spring-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":"18 ... 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 ... 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":"spring-loaded 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":"spring-loaded 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":"Spring-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 ... 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)","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 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","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":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=491104&mlfb=3RT2027-2NB30","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2027-2NB30/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3RT2027-2NB30 and how is it quoted for volume purchases?","answer":"This part is sourced through independent industrial-automation distribution channels. Volume pricing and lead time are confirmed at quote time against an RFQ — no stock or price figures are published here."},{"question":"What is 3RT2027-2NB30's listed depth (107 mm) on this component line?","answer":"The depth is 107 mm. Combined with a width of 45 mm and height of 102 mm, it fits standard S0-size contactor footprints on 35 mm DIN rail."},{"question":"What is 3RT2027-2NB30's listed solid (1... 10 mm²) on this component line?","answer":"The main circuit terminals accept solid conductors from 1 to 10 mm². Stranded conductors also span 1 to 10 mm². Auxiliary terminals accept 2 × 0.5 to 2.5 mm² solid or stranded."},{"question":"Will 3RT2027-2NB30 drop into a panel that was specified around 3RT2015-2UB41 without rewiring?","answer":"Both are SIRIUS contactors in the S0 frame size with the same 45 mm width and DIN-rail mounting, so the mechanical footprint is identical. However, the 3RT2027-2NB30 uses spring-type terminals while the 3RT2015-2UB41 uses screw terminals — verify that the existing wiring can terminate into spring-cage clamps without re-termination. The coil voltage and auxiliary contact configuration must also match the panel design."},{"question":"What compliance documentation does this brand provide for 3RT2027-2NB30 (RoHS, REACH, UL, IEC)?","answer":"As a Siemens SIRIUS product, the 3RT2027-2NB30 is designed to meet applicable IEC and UL standards for industrial control equipment. RoHS and REACH compliance declarations are typically available from Siemens documentation portals. Specific certification marks (UL, CSA, CE) should be verified against the product label or the manufacturer's declaration of conformity for the exact variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2027-2NB30","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/3RT2027-2NB30 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}}