{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT6028-1BB40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT6028-1BB40","canonicalUrl":"https://aoctrl.com/siemens/3RT6028-1BB40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT6028-1BB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT6028-1BB40, S0 size, 24 VDC coil, screw terminals, 45 mm wide, AC-3 rated to 690 V.","salesMarkdown":"Rated for AC-3 duty up to 690 V, it handles motor switching at 27.5 kW at 400 V and 47.5 kW at 690 V (both at 60 °C ambient), making it suitable for pump, fan, and compressor loads in 400 V and 690 V networks. The 24 VDC coil draws 6 A at rated voltage — a standard control voltage for PLC-driven panels, but verify your DC supply can support the inrush if multiple contactors pull in simultaneously. The S0 frame size and 45 mm width mean this contactor occupies the same DIN-rail footprint as the earlier 3RT2028 series, so a panel designed around the 3RT2028-1BB40 will accept this part without rewiring or rail repositioning. RoHS compliance is documented with a substance prohibitance date of 05/01/2012, covering REACH and EU RoHS requirements.","metaTitle":"Siemens 3RT6028-1BB40 SIRIUS Power Contactor, 24 VDC Coil, S","metaDescription":"Siemens 3RT6028-1BB40 SIRIUS power contactor, 24 VDC coil, S0 size, screw terminals, 690 V AC-3 rated, 45 mm wide, active production. RFQ for pricing.","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":"24 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","at 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","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","operational current at AC-12 maximum":"10 A","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=580234&mlfb=3RT6028-1BB40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT6028-1BB40/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT6028-1BB40 drop into a panel designed for 3RT2028-1BB40 without rewiring?","answer":"Yes. Both are S0 frame size, 45 mm wide, and mount on 35 mm DIN rail. The footprint and terminal layout are the same, so no rail repositioning or rewiring is needed."},{"question":"What are the motor power ratings at 60 °C?","answer":"At 60 °C ambient, the contactor is rated for 15.5 kW at 230 V, 27.5 kW at 400 V, and 47.5 kW at 690 V under AC-3 duty."},{"question":"What compliance documentation does Siemens provide for this part?","answer":"RoHS and REACH compliance is confirmed with a substance prohibitance date of 05/01/2012. The contactor is designed to meet IEC and UL standards for industrial control equipment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT6028-1BB40","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/3RT6028-1BB40 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}}