{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2025-1AD04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2025-1AD04","canonicalUrl":"https://aoctrl.com/siemens/3RT2025-1AD04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2025-1AD04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2025-1AD04 power contactor, size S0, 24 VDC coil, screw-type terminals, 3-pole main contacts, current production.","salesMarkdown":"The contactor is rated for AC-3 switching up to 14 A at 480 V, which covers typical 3 hp motor loads at 230 V and 3 A at 400 V — the AC-3 rating is the one that governs real motor duty, not the higher AC-1 resistive figure. ## Switching Capacity and Duty Ratings The 3RT2025-1AD04 carries a 24 VDC coil rated at 6 A holding current. For DC switching on the main contacts, it handles 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 0.6 A at 440 V — these are the DC-1 resistive load ratings, not motor duty. The AC-3e maximum switching frequency is 1,000 operations per hour, matching the AC-1, AC-2, and AC-3 rates; AC-4 drops to 300 cycles per hour for plugging or inching duty. For finer control wiring, two conductors per terminal are allowed: 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²). The magnet coil connection is also screw-type. No auxiliary switch is integrated — if aux contacts are needed, a separate side-mount block must be added. ## Environmental and Operating Limits Coil power consumption at 50 Hz is 0.25 A. Arcing time is 10 to 10 ms (a tight band typical of DC coil contactors). The contactor is rated for AC switching with a make/break time of 4 to 16 ms.","metaTitle":"Siemens 3RT2025-1AD04 SIRIUS Power Contactor, S0 Size, 24 VD","metaDescription":"Siemens SIRIUS 3RT2025-1AD04 power contactor, size S0, 24 VDC coil, screw terminals. Rated 14 A at 480 V AC-3. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"141 mm","Solid":"1 ... 10 mm²","Width":"45 mm","at AC":"4 ... 16 ms","Height":"85 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"1 ... 10 mm²","at 50 Hz":"0.25","Downwards":"10 mm","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"1 000 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"300 1/h","lifecycle_stage":"current","Auxiliary Switch":"No","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","at AC-3e maximum":"1 000 1/h","For Main Contacts":"16 ... 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 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Power contactor","at 24 V rated value":"6 A","at 48 V rated value":"2 A","at 60 V rated value":"2 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":"3 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.6 A","at 480 V rated value":"14 A","at 50 Hz rated value":"42 V","at 500 V rated value":"2 A","at 600 V rated value":"17 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"1 hp","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"5 hp","at 460/480 V rated value":"10 hp","at 575/600 V rated value":"15 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"1.8 W","at AC-2 at 400 V rated value":"7.5 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"15.5 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2009","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"35.2 A","at AC-5b up to 400 V rated value":"14.1 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA)","Without Load Current Share Typical":"7.6 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 63A (690V,100kA), aM: 32A (690V,100kA), BS88: 63A (415V,80kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"0.6 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","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":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC","Limited To 1 S Switching At Zero Current Maximum":"225 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"225 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"189 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"140 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"115 A; 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","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)","minimum cross-section in main circuit at maximum AC-1 rated value":"10 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e3928c89d6b06f70dfd0926ffb1c6207.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=446613&mlfb=3RT2025-1AD04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2025-1AD04/alternatives.json"},"ai":{"faq":[{"question":"What is 3RT2025-1AD04's AC-3 rating at 480 V?","answer":"The AC-3 motor switching rating at 480 V is 14 A, which covers typical 3 hp motor loads at 230 V and 3 A at 400 V."},{"question":"What wire sizes does the 3RT2025-1AD04 accept?","answer":"Main contacts accept solid or stranded wire from 1 to 10 mm². Control wiring allows 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) per terminal."},{"question":"Will 3RT2025-1AD04 drop into a panel specified around 3RT2016-1AD02 without rewiring?","answer":"Both are S0 frame size contactors with the same 45 mm width and DIN rail mounting, so the mechanical footprint is identical. However, the 3RT2025-1AD04 has a 24 VDC coil while the 3RT2016-1AD02 also uses a 24 VDC coil — verify the coil rating matches your control voltage. The main contact ratings differ: the 3RT2025-1AD04 is rated 14 A at 480 V AC-3 versus the 3RT2016-1AD02's lower current rating, so if the load current is within the lower contactor's range, the swap is form-fit-function compatible."},{"question":"Where can I buy the 3RT2025-1AD04?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2025-1AD04","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/3RT2025-1AD04 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}}