{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2627-1BB45","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2627-1BB45","canonicalUrl":"https://aoctrl.com/siemens/3RT2627-1BB45","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2627-1BB45","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS capacitor contactor, 3RT2627-1BB45, 24 VDC coil, screw-type terminals, S0 size, 45 mm width.","salesMarkdown":"The Siemens SIRIUS 3RT2627-1BB45 is a capacitor contactor — a switching device designed specifically for making and breaking capacitor banks in power-factor correction panels. The coil is 24 VDC, terminated with screw-type terminals. At 45 mm wide, 135 mm tall, and 165 mm deep, it fits into standard distribution enclosures alongside other S0 contactors and overload relays. Capacitor contactors must handle inrush currents that can exceed steady-state by tens of times. The 3RT2627-1BB45 is rated for switching at 24 VDC up to 6 A, at 60 VDC up to 2 A, at 110 VDC up to 1 A, at 125 VDC up to 0.9 A, at 220 VDC up to 0.3 A, at 230 VDC up to 6 A, at 400 VDC up to 3 A, and at 690 VDC up to 1 A. These are the DC-1 (resistive) or DC-3 (motor/capacitor) switching currents — the numbers you use to size the contactor for your bank's discharge and re-energization cycle. The contactor's arcing time is 10 to 10 ms, and the opening/closing time at DC is 15 to 18 ms. That repeatable timing matters when synchronizing multiple capacitor steps in a PFC controller. Terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². Stranded: 2x (1 to 2.5 mm²) or 2x (2.5 to 10 mm²). At 40 °C ambient, a single 10 mm² conductor is allowed; at 60 °C, two 10 mm² conductors. Maximum switching frequency is 100 operations per hour at voltages up to 600 VAC, dropping to 72 operations per hour at 690 VAC. That sets the cycling limit for your capacitor bank's daily switching schedule.","metaTitle":"Siemens 3RT2627-1BB45 SIRIUS Capacitor Contactor, 24 VDC, 45","metaDescription":"Siemens SIRIUS 3RT2627-1BB45 capacitor contactor, 24 VDC coil, screw terminals, S0 size, 45 mm width, 135 mm height, 165 mm depth. Current production. Sourced to order.","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":"3RT2627-1BB45","Height":"135 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 10 mm²","at 60 °C":"2x 10 mm²","Attachable":"0","Arcing Time":"10 ... 10 ms","Rated Value":"24 V","description":"capacitor contactor, AC-6b 25 kVAr, / 400 V, 3-pole, 24 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":"100 1/h","at 500 V maximum":"100 1/h","at 600 V maximum":"100 1/h","at 690 V maximum":"72 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","at DC at 24 V maximum permissible":"16 mA","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","at 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)":"200 000","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":"16 ... 8","For Short-Circuit Protection Of The Main Circuit With Type Of Coordination 1 Required":"gG: 80 A (690 V, 50 kA)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$106.68","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=32627&mlfb=3RT2627-1BB45"},"ai":{"faq":[{"question":"What are the key dimensions of 3RT2627-1BB45?","answer":"Width 45 mm, height 135 mm, depth 165 mm."},{"question":"What conductor sizes does the 3RT2627-1BB45 accept?","answer":"Solid: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². Stranded: 2x (1 to 2.5 mm²) or 2x (2.5 to 10 mm²)."},{"question":"What is the switching capacity at 24 VDC?","answer":"Rated at 6 A at 24 VDC."},{"question":"Where can I buy 3RT2627-1BB45?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2627-1BB45","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/3RT2627-1BB45 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}}