{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2027-2XJ40-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2027-2XJ40-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT2027-2XJ40-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2027-2XJ40-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2027-2XJ40-0LA2 contactor, size S0, 45 mm width, screw and snap-on DIN rail mounting, spring-type terminals.","salesMarkdown":"## SIRIUS S0 contactor for panel integration With a width of 45 mm, it fits standard DIN-rail panel layouts and leaves room for adjacent devices in the same row. The coil termination uses spring-type terminals, which speeds wiring compared to screw clamps. Main contact connections accept solid conductors from 1 to 10 mm² (2x) and stranded from 0.5 to 2.5 mm² (2x). ## Mounting clearances and position These spacings ensure adequate cooling and arc clearance for the S0 frame. This flexibility helps when orienting the contactor in tight enclosures. The contactor is rated for DC coil voltage with a rated value of 72 V DC. Maximum switching frequency: 750 operations per hour for AC-1, AC-2, AC-3, and AC-3e duty; 250 operations per hour for AC-4. This suits moderate-speed cycling applications like conveyor controls or pump starters. ## Auxiliary contacts and DC switching ratings DC switching ratings for the auxiliary contacts at 24 V: 10 A; at 48 V: 2 A; at 60 V: 2 A; at 110 V: 1 A; at 125 V: 0.9 A; at 220 V: 0.3 A; at 400 V: 3 A. These values govern the DC load the auxiliary contacts can break. This product carries a current lifecycle stage from the manufacturer.","metaTitle":"Siemens 3RT2027-2XJ40-0LA2 SIRIUS Contactor, S0, 45mm","metaDescription":"Siemens SIRIUS 3RT2027-2XJ40-0LA2 contactor, size S0, 45mm wide. Screw and snap-on DIN rail mounting. Rated for -40 to +70 °C operation. Available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"107 mm","Solid":"2x (1 ... 10 mm²)","Width":"45 mm","at DC":"30 ... 50 ms","Height":"102 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","Rated Value":"72 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","Type Of Voltage":"DC","at AC-1 maximum":"750 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":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","Full-Scale Value":"1.25","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","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":"5 hp","at 400 V rated value":"3 A","at 480 V rated value":"27 A","at 500 V rated value":"2 A","at 600 V rated value":"27 A","at 690 V rated value":"1 A","Design Of The Product":"With extended operating range","Instantaneous Contact":"1","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","at AC-2 at AC-3e maximum":"750 1/h","Relative Humidity Minimum":"10 %","at maximum Ith rated value":"10 mm²","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at maximum AC-1 rated value":"10 mm²","at AC in hot operating state":"8.1 W","at AC-2 at 400 V rated value":"15 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"22 A","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"with varistor","at AWG cables for main contacts":"2x (18 ... 8)","Duration Of Locked-Rotor Current":"180 ms","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","Product Function Bus 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":"1.6 W","closing power of magnet coil at DC":"13.2 W","holding power of magnet coil at DC":"1.3 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)","at AWG cables for auxiliary contacts":"2x (20 ... 14)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"2.7 W","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"No","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 %","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"DC","up to 40 °C according to IEC 60077 rated value":"50 A","up to 70 °C according to IEC 60077 rated value":"36 A","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":"395 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":"186 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"152 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / Q600","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)","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=524861&mlfb=3RT2027-2XJ40-0LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2027-2XJ40-0LA2/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT2027-2XJ40-0LA2?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing."},{"question":"What is the width of 3RT2027-2XJ40-0LA2?","answer":"The width is 45 mm, fitting the S0 frame size."},{"question":"What temperature range does this contactor support?","answer":"Operating temperature is -40 to +70 °C; storage temperature is -55 to +80 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2027-2XJ40-0LA2","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/3RT2027-2XJ40-0LA2 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}}