{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT6028-1AH00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT6028-1AH00","canonicalUrl":"https://aoctrl.com/siemens/3RT6028-1AH00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT6028-1AH00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 3RT6028-1AH00, screw-type terminals, 45 mm width, rated 27.5 kW at 400 V 60 °C, AC-3 maximum 690 V.","salesMarkdown":"## SIRIUS S0 power contactor – 3RT6028-1AH00 The Siemens 3RT6028-1AH00 is a SIRIUS S0 power contactor with screw-type terminals for main and auxiliary circuits. Rated for motor loads at 60 °C ambient: 15.5 kW at 230 V, 27.5 kW at 400 V, and 47.5 kW at 690 V. The AC-3 and AC-3e maximum voltage is 690 V, covering common 400 V and 690 V line supplies without derating the voltage class. Side-by-side mounting is permitted — zero gap between units saves rail space, though thermal derating should be checked when packing multiple contactors in an enclosure. ## Switching capacity and coil data Maximum switching rates: 5 000 1/h at AC, 1 000 1/h at AC-1, 750 1/h at AC-3 and AC-3e, and 250 1/h at AC-4. The AC-4 rate matters for plugging or inching duty — if your application reverses or jogs the motor frequently, stay under 250 operations per hour. Coil draws 6 A at 24 V rated value, 10 A at 230 V, and lower currents at higher control voltages (1 A at 110 V, 0.3 A at 220 V, 3 A at 400 V, 1 A at 690 V). The coil power supply must be sized for the inrush; a 24 VDC supply feeding multiple contactors should account for the 6 A per device at pickup.","metaTitle":"Siemens 3RT6028-1AH00 SIRIUS Power Contactor, S0, 27.5 kW at","metaDescription":"Siemens 3RT6028-1AH00 SIRIUS power contactor, size S0, 27.5 kW at 400 V 60 °C, AC-3 rated 690 V max. Screw terminals, 45 mm wide, DIN rail snap-on. Active production, available to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"97 mm","Width":"45 mm","at AC":"5 000 1/h","Height":"85 mm","at 50 Hz":"0.25","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 50 Hz rated value":"48 V","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","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":"AC","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/bf4c09cd34ca0aeede4798fb61c04e4c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=580227&mlfb=3RT6028-1AH00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT6028-1AH00/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT6028-1AH00 drop into a panel designed for 3RT6028-1AB00?","answer":"Both are size S0, 45 mm wide, screw-terminal contactors on the same DIN-rail footprint. The 1AH00 variant uses a different coil voltage or auxiliary configuration than the 1AB00 — verify the coil rating and auxiliary contact arrangement before swapping, but the mechanical fit and terminal layout are identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT6028-1AH00","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/3RT6028-1AH00 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}}