{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2625-1AC25","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2625-1AC25","canonicalUrl":"https://aoctrl.com/siemens/3RT2625-1AC25","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2625-1AC25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2625-1AC25 capacitor contactor, S0 frame size, 24 V AC 50/60 Hz coil, screw-type terminals, 45 mm width, DIN rail mount.","salesMarkdown":"## Capacitor switching contactor for power factor correction banks The Siemens 3RT2625-1AC25 is a SIRIUS capacitor contactor, size S0, designed specifically for switching capacitor banks in power factor correction (PFC) applications. Unlike a standard motor contactor, it includes pre-charge resistors to limit inrush current when energising the capacitor, preventing contact welding and nuisance fuse blows. This frequency ceiling is the practical limit for capacitor bank cycling in PFC controllers. ## Panel fit and termination details The S0 frame size is a common footprint across the SIRIUS 3RT2 range, so panel cut-outs and busbar layouts for the S0 family transfer directly. Screw-type terminals on both the main poles and the coil. The terminal capacity covers the typical power and control wiring for capacitor banks up to the contactor's rating. This eases integration into tight panels where the contactor must be oriented to match the capacitor bank layout. ## Environmental limits and switching performance The arcing time is 4…16 ms at AC, with a typical value of 10 ms. These arcing times are consistent with the pre-charge resistor design that limits the capacitor inrush to a level the main contacts can handle without excessive wear.","metaTitle":"Siemens 3RT2625-1AC25 SIRIUS Capacitor Contactor, 24V Coil","metaDescription":"Siemens 3RT2625-1AC25 SIRIUS capacitor contactor, S0 frame, 24V AC 50/60Hz coil. Switches 6A at 230V AC. Screw terminals, DIN rail mount. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"155 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"45 mm","at AC":"4 ... 16 ms","title":"3RT2625-1AC25","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 50 Hz":"0.8 ... 1.1","at 690 V":"1 A","at 40 °C":"1x 6 mm²","at 60 °C":"1x 10 mm², 2x 6 mm²","Attachable":"0","Arcing Time":"10 ... 10 ms","description":"capacitor contactor, AC-6b 16.7 kVAr, / 400 V, 3-pole, 24 V AC, 50/60 Hz, auxiliary contacts: 1 NO + 2 NC, screw terminal, size: S0","1 Rated Value":"50 Hz","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Type Of Voltage":"AC","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 230 V maximum":"180 1/h","at 240 V maximum":"180 1/h","at 400 V maximum":"180 1/h","at 480 V maximum":"180 1/h","at 500 V maximum":"180 1/h","at 600 V maximum":"180 1/h","at 690 V maximum":"150 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","at 50 Hz rated value":"24 V","at 60 Hz rated value":"24 V","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","at AC at 230 V maximum permissible":"6 mA","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)":"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","apparent holding power of magnet coil at AC":"9.8 VA","apparent pick-up power of magnet coil at AC":"77 VA","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"AC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Inductive Power Factor With Closing Power Of The Coil":"0.82","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.25","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: 50 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=646310&mlfb=3RT2625-1AC25"},"ai":{"faq":[{"question":"What is the switching capacity of 3RT2625-1AC25 at different voltages?","answer":"The maximum switching frequency is 180 operations per hour up to 600 V, reducing to 150 operations per hour at 690 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2625-1AC25","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/3RT2625-1AC25 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}}