{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2027-1BJ80","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2027-1BJ80","canonicalUrl":"https://aoctrl.com/siemens/3RT2027-1BJ80","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2027-1BJ80","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT2027-1BJ80, Size S0, 24 VDC coil, screw-type terminals, 10 A DC-13 at 24 V, snap-on 35 mm DIN rail.","salesMarkdown":"The Siemens 3RT2027-1BJ80 is a SIRIUS-brand power contactor in the Size S0 frame, with a 24 VDC-rated magnet coil terminated via screw-type terminals. It mounts onto a 35 mm DIN rail per DIN EN 60715, either screw-fixed or snapped on, and accepts ±180° rotation on a vertical surface with ±22.5° tilt allowance — useful when panel layout forces an unconventional orientation. Rated for DC-13 duty at 24 V at 10 A, this contactor handles solenoid and electromagnetic brake loads common in packaging and material-handling lines. ## Clearance and wiring constraints Side clearance to adjacent devices is 6 mm; vertical (up/down) clearance is 10 mm each, and forward clearance is also 10 mm. That 6 mm side gap is tighter than some S0 peers — if you're packing multiple contactors side-by-side, check that the auxiliary switch (present on this unit) doesn't overhang into the next slot. Main contacts accept solid or stranded wire from 1 to 10 mm²; auxiliary contacts take 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²). The screw terminals are the standard captive type — no spring-cage here, so budget for screwdriver time if the panel spec calls for tool-less wiring. Maximum switching rate is 1,000 cycles/hour at AC-1 (resistive loads), 750 cycles/hour at AC-3 (squirrel-cage motor starting), and 250 cycles/hour at AC-4 (plugging/inching). Arcing time is 10 ms; dropout time at DC is 15 to 18 ms. Those numbers matter if you're coordinating with a safety relay or a downstream contactor — the dropout delay is consistent enough for basic category 3 or 4 circuits, but verify the total off-delay against your safety PLC's tolerance.","metaTitle":"Siemens 3RT2027-1BJ80 SIRIUS Power Contactor, Size S0, 24 VD","metaDescription":"Siemens 3RT2027-1BJ80 SIRIUS power contactor, Size S0, screw-type terminals, 24 VDC coil, 10 A DC-13 at 24 V. Current lifecycle stage. Quoted to order.","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 DC":"15 ... 18 ms","Height":"85 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"1 ... 10 mm²","Downwards":"10 mm","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","Rated Value":"72 V","Initial Value":"0.8","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":"1.1","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","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 500 V rated value":"2 A","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","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-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","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":"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":"5.9 W","closing power of magnet coil at DC":"5.9 W","holding power of magnet coil at DC":"5.9 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":"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=417882&mlfb=3RT2027-1BJ80","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2027-1BJ80/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3RT2027-1BJ80 and how is it quoted for volume purchases?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Submit a request with your target quantity and delivery window for a firm price and lead time."},{"question":"What is 3RT2027-1BJ80's listed depth?","answer":"The depth is 107 mm, with a width of 45 mm and height of 85 mm. Side clearance to adjacent devices is 6 mm."},{"question":"What wire sizes does 3RT2027-1BJ80 accept on the main contacts?","answer":"Main contacts accept solid or stranded wire from 1 to 10 mm². Auxiliary contacts accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²)."},{"question":"Will 3RT2027-1BJ80 drop into a panel specified around 3RT2015-1BW42 without rewiring?","answer":"Both are Size S0 contactors on the same 35 mm DIN-rail footprint, so the mechanical fit is identical. The 3RT2027-1BJ80 uses a 24 VDC coil and screw terminals; verify the coil voltage matches your control circuit and that the wiring method (screw vs. spring-cage on the 3RT2015-1BW42) is acceptable before swapping."},{"question":"What compliance documentation does Siemens provide for 3RT2027-1BJ80?","answer":"As a standard SIRIUS catalog product, Siemens provides a declaration of conformity to IEC/EN 60947-4-1 and supporting documentation for CE, UKCA, and EAC markings. RoHS and REACH compliance declarations are available through the Siemens Industry Online Support portal for this order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2027-1BJ80","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/3RT2027-1BJ80 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}}