{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2628-1BF45","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2628-1BF45","canonicalUrl":"https://aoctrl.com/siemens/3RT2628-1BF45","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2628-1BF45","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2628-1BF45 capacitor contactor, size S0, 45 mm width, screw-type coil terminals, DC-operated, 6 A at 24 V DC, 3 A at 400 V AC.","salesMarkdown":"## Capacitor switching contactor — SIRIUS size S0 The Siemens 3RT2628-1BF45 is a SIRIUS capacitor contactor in frame size S0, designed for switching capacitive loads in power factor correction banks. It is a DC-operated contactor with a screw-type coil terminal block. Rated for 6 A at 24 V DC and 3 A at 400 V AC, it handles capacitor inrush without welding or excessive arcing — the arcing time is held to 10 ms. ## Switching ratings across voltage bands At 230 V AC the contactor switches 6 A; at 400 V AC it switches 3 A; at 690 V AC it switches 1 A. The DC switching capability is 6 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.9 A at 125 V, and 0.3 A at 220 V. Maximum switching frequency at 230 V, 240 V, and 400 V is 100 operations per hour; at 480 V it drops to 70 1/h, at 500 V to 65 1/h, at 600 V to 45 1/h, and at 690 V to 36 1/h. ## Mounting, wiring, and environment Mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 50022. The mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward. Solid wire termination accepts 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), or 2x 4 mm²; stranded wire accepts 2x (1...2.5 mm²) or 2x (2.5...10 mm²). Operating temperature range is -25 to +60 °C; storage range is -55 to +80 °C.","metaTitle":"Siemens 3RT2628-1BF45 SIRIUS Capacitor Contactor, S0, 45 mm","metaDescription":"Siemens 3RT2628-1BF45 SIRIUS capacitor contactor, size S0, 45 mm width, 6 A at 24 V DC. Current production. Quoted to order against BOM.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"165 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"45 mm","at DC":"15 ... 18 ms","title":"3RT2628-1BF45","Height":"150 mm","at 24 V":"6 A","at 60 V":"2 A","Stranded":"2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)","at 110 V":"1 A","at 125 V":"0.9 A","at 220 V":"0.3 A","at 230 V":"6 A","at 400 V":"3 A","at 690 V":"1 A","at 40 °C":"1x 16 mm²","at 60 °C":"1x 25 mm²","Attachable":"0","Arcing Time":"10 ... 10 ms","Rated Value":"110 V","description":"capacitor contactor, AC-6b 33 kVAr, / 400 V, 3-pole, 110 V DC, auxiliary contacts: 1 NO + 2 NC, screw terminal, size: S0","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Type Of Voltage":"DC","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","Full-Scale Value":"1.1","at 230 V maximum":"100 1/h","at 240 V maximum":"100 1/h","at 400 V maximum":"100 1/h","at 480 V maximum":"70 1/h","at 500 V maximum":"65 1/h","at 600 V maximum":"45 1/h","at 690 V maximum":"36 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), 2x 4 mm²","Product Brand Name":"SIRIUS","Product Designation":"capacitor contactors","Instantaneous Contact":"1","For Main Current Circuit":"screw-type terminals","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","Substance Prohibitance (Date)":"05/01/2014","For Grounded Parts At The Side":"10 mm","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"No","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","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","With Side-By-Side Mounting At The Side":"10 mm","Electrical Endurance (Operating Cycles)":"150 000","number of NC contacts for main contacts":"0","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":"0.00000001","mirror contact according to IEC 60947-4-1":"No","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"DC","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":"3 000 000","operational current of auxiliary contacts at AC-12 maximum":"10 A","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)","AWG number as coded connectable conductor cross section for main contacts":"10 ... 4","For Short-Circuit Protection Of The Main Circuit With Type Of Coordination 1 Required":"gG: 100 A (690 V, 50 kA)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/36dd2efac410d81a7399adb948b76e7c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=198405&mlfb=3RT2628-1BF45"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2628-1BF45","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/3RT2628-1BF45 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}