{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2325-2BF40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2325-2BF40","canonicalUrl":"https://aoctrl.com/siemens/3RT2325-2BF40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2325-2BF40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor, 3RT2325-2BF40, S0 frame, 110 V DC coil, spring-type terminals, 10 A at 24 V DC, 10 A at 230 V AC, screw and snap-on 35 mm DIN rail.","salesMarkdown":"Its 110 V DC coil pulls in at 80% of rated voltage and drops out at 110% — the DC coil holds steady without the hum of an AC coil, but the operating time of 15–18 ms and arcing time of 10 ms mean the contactor's switching speed is fixed; if your application needs faster break, you'd look at a DC-rated semiconductor switch instead. The spring-type terminals accept 2x 0.5–2.5 mm² solid or 1–10 mm² stranded — that covers most control-wiring gauges, but if you're paralleling heavy power feeds, the 10 mm² stranded limit is the ceiling. The S0 footprint is 60 mm wide, 102 mm tall, 107 mm deep. The contactor accepts up to two attachable auxiliary switch blocks; the base unit already carries one auxiliary switch. ## Switching capacity and thermal limits Main contacts rated for AC-3 duty at 18 A — that's the motor-switching current at 400 V. DC switching ratings are given per voltage: 10 A at 24 V, 2 A at 48 V, 6 A at 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 0.1 A at 600 V, 1 A at 690 V. For AC loads: 10 A at 230 V, 3 A at 400 V, 2 A at 500 V.","metaTitle":"Siemens 3RT2325-2BF40 SIRIUS Contactor, 110 V DC Coil, S0 Fr","metaDescription":"Siemens 3RT2325-2BF40 SIRIUS contactor, S0 frame, 110 V DC coil, spring-type terminals, 10 A at 24 V DC. Current lifecycle. Sourced to order. Request RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"107 mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"60 mm","at DC":"15 ... 18 ms","Height":"102 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"1 ... 10 mm²","Downwards":"10 mm","Attachable":"2","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","Rated Value":"110 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","Type Of Voltage":"DC","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","Full-Scale Value":"1.1","For Main Contacts":"18 ... 8","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 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"6 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"10 A","at 400 V rated value":"3 A","at 500 V rated value":"2 A","at 600 V rated value":"0.1 A","at 690 V rated value":"1 A","Instantaneous Contact":"1","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"spring-loaded terminals","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC in hot operating state":"7.6 W","at AC-3 at 400 V rated value":"7.5 kW","at AC-4 at 400 V rated value":"7.5 kW","Substance Prohibitance (Date)":"10/01/2009","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG: 20 A (690 V, 100 kA)","Without Load Current Share Typical":"5.9 W","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":"Spring-type terminals","operating frequency at AC-1 maximum":"1 000 1/h","With Type Of Coordination 1 Required":"gG: 63 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"1.9 W","for AWG cables for auxiliary contacts":"2x (20 ... 14)","number of NO contacts for main contacts":"4","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"4","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Product Function Short Circuit Protection":"No","mirror contact according to IEC 60947-4-1":"Yes","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"DC","Limited To 1 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","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":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (690 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"10 mm²","Of The Auxiliary And Control Circuit With Degree Of Pollution 3 Rated Value":"690 V","Design Of The Miniature Circuit Breaker For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (230 V, 400 A)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b7f38e9f9d86e59b04eac68bfea90c40.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=89440&mlfb=3RT2325-2BF40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2325-2BF40/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT2325-2BF40 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing."},{"question":"What is 3RT2325-2BF40's listed depth?","answer":"The depth is 107 mm."},{"question":"What wire sizes does the spring terminal accept?","answer":"Solid wire: 2x 0.5–2.5 mm². Stranded wire: 1–10 mm²."},{"question":"Will 3RT2325-2BF40 drop into a panel specified for 3RT2326-1BK80 without rewiring?","answer":"Both are S0-frame contactors with the same DIN-rail mounting and similar terminal styles, but the 3RT2326-1BK80 has a different coil voltage and rating. Verify coil voltage compatibility before substitution — the 3RT2325-2BF40 uses a 110 V DC coil, while the 3RT2326-1BK80 may differ. No rewiring of the power circuit is needed if the coil voltage matches."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2325-2BF40","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/3RT2325-2BF40 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}}