{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT6027-1BM40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT6027-1BM40","canonicalUrl":"https://aoctrl.com/siemens/3RT6027-1BM40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT6027-1BM40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT6027-1BM40 power contactor, size S0, 45 mm width, 27.5 kW at 400 V AC-3e at 60 °C, screw terminals, DIN rail snap-on mounting.","salesMarkdown":"## SIRIUS power contactor, size S0 — 3RT6027-1BM40 The Siemens 3RT6027-1BM40 is a SIRIUS power contactor in the size S0 frame, rated for motor switching up to 27.5 kW at 400 V at 60 °C ambient. The screw-type terminals on both main and auxiliary circuits accept 2x (0.5 to 2.5 mm²) solid or stranded, or AWG 16 to 8 for the main contacts. The AC-3e maximum switching frequency of 750 cycles per hour governs motor starting duty — this contactor handles frequent starts without overheating, but the AC-4 maximum of 250 1/h applies when plugging or inching. The 27.5 kW at 400 V at 60 °C is the real-world motor power you can switch in a warm cabinet; at 690 V it reaches 47.5 kW. The 10 million mechanical cycles typical life means this contactor outlasts most equipment it controls, making it a strong candidate for a critical spare. At 45 mm wide and 107 mm deep, this size S0 contactor fits standard 35 mm DIN rail.","metaTitle":"Siemens 3RT6027-1BM40 SIRIUS Power Contactor, 27.5 kW at 400","metaDescription":"Siemens 3RT6027-1BM40 SIRIUS power contactor, size S0, 45 mm wide, 27.5 kW at 400 V 60 °C. Screw terminals, DIN rail mount. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"107 mm","Width":"45 mm","at DC":"1 500 1/h","Height":"85 mm","Rated Value":"220 V","During Storage":"-55 ... +80 °C","at AC-1 maximum":"1 000 1/h","at AC-3 maximum":"750 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022","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","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"Power contactor","at 24 V rated value":"6 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"10 A","at 400 V rated value":"3 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-3 rated value maximum":"690 V","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"10 mm²","at 60 °C minimum permissible":"10 mm²","Insulation Voltage Rated Value":"690 V","at 230 V at 60 °C rated value":"15.5 kW","at 400 V at 60 °C rated value":"27.5 kW","at 690 V at 60 °C rated value":"47.5 kW","for AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","With Type Of Assignment 2 Required":"gL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 35 A","closing power of magnet coil at DC":"5.9 W","holding power of magnet coil at DC":"5.9 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"gL/gG LV HRC 3NA, DIAZED 5SB, NEOZED 5SE: 100 A","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","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)","at ambient temperature 40 °C rated value":"50 A","at ambient temperature 60 °C rated value":"42 A","Type Of Voltage Of The Control Supply Voltage":"DC","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6cb2ffbc6cdbb4de8190c63e30fa547a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=580218&mlfb=3RT6027-1BM40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT6027-1BM40/alternatives.json"},"ai":{"faq":[{"question":"What are the motor power ratings for 3RT6027-1BM40 at 60 °C?","answer":"At 230 V it is rated 15.5 kW, at 400 V it is 27.5 kW, and at 690 V it is 47.5 kW — all at 60 °C ambient."},{"question":"Where can I buy 3RT6027-1BM40?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation is available for 3RT6027-1BM40?","answer":"The part carries a substance prohibition date of 05/01/2012 for RoHS-like compliance. It is designed for pollution degree 3 and insulation voltage rated 690 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT6027-1BM40","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/3RT6027-1BM40 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}}