{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2027-4AG60","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2027-4AG60","canonicalUrl":"https://aoctrl.com/siemens/3RT2027-4AG60","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2027-4AG60","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S0 power contactor, 3RT2027-4AG60, 480 V rated 27 A AC-3, screw and snap-on 35 mm DIN rail mount, ring cable lug coil connection.","salesMarkdown":"## SIRIUS S0 power contactor — 3RT2027-4AG60 Its headline AC-3 rating is 27 A at 480 V — that's the motor-switching current it handles without welding the main contacts during normal starting and stopping. The S0 frame keeps the width at 45 mm, height 85 mm, depth 97 mm, so it fits standard 45 mm-wide DIN-rail slots alongside other motor starters. The 27 A at 480 V AC-3 rating is the one that decides whether this contactor fits a given motor branch. AC-3 covers squirrel-cage motors: making and breaking during running, with infrequent plugging or inching. The 3RT2027-4AG60 also carries an AC-1 (resistive load) maximum of 1 000 switching cycles per hour, AC-3 at 750 cycles/h, and AC-4 (plugging/reversing) at 250 cycles/h — so if your application does frequent reversing, you'll want to check the thermal duty cycle against your actual load profile. Auxiliary contact ratings span from 10 A at 24 V up through 3 A at 400 V and 0.6 A at 440 V, all at 50/60 Hz; the 480 V auxiliary rating is 27 A (likely the main pole rating repeated for the auxiliary circuit, so verify the auxiliary contactor's own 480 V rating separately). Coil connection is a ring cable lug, so you'll need ring terminals on the control wiring — no push-on or screw-clamp coil spade.","metaTitle":"Siemens 3RT2027-4AG60 SIRIUS Power Contactor, 480V 27A AC-3","metaDescription":"Siemens 3RT2027-4AG60 SIRIUS S0 power contactor, 480V 27A AC-3 rating. Current production. Screw/snap-on DIN rail mount. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"97 mm","Width":"45 mm","at AC":"4 ... 16 ms","Height":"85 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"0.25","at 60 Hz":"0.28","Downwards":"10 mm","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Ring cable lug connection","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","at AC-3e maximum":"750 1/h","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","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":"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":"100 V","at 500 V rated value":"2 A","at 60 Hz rated value":"110 V","at 600 V rated value":"27 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"Ring cable lug connection","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","Relative Humidity Minimum":"10 %","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","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":"ring terminal lug connection","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":"10.5 W","At Contactor For Auxiliary Contacts":"Ring cable lug connection","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","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","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","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":"https://cdn.aoctrl.com/eb6255cfd8e0d7b5a47277dab7f9fd79.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=119763&mlfb=3RT2027-4AG60","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2027-4AG60/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT2027-4AG60 drop into a panel specified around 3RT2015-4AN62?","answer":"Both are S0-frame SIRIUS contactors with the same 45 mm width and DIN-rail mount, so the physical footprint is identical. Verify the coil voltage and auxiliary contact configuration match your control circuit before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2027-4AG60","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/3RT2027-4AG60 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}}