{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1AC00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1AC00","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1AC00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AC00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S0 power contactor, 3RT1025-1AC00, 3 NO main contacts, 32 V 50 Hz coil, screw terminals, 45 mm width, IP20 front protection.","salesMarkdown":"This 3RT1025-1AC00 is a SIRIUS S0 power contactor from Siemens — three normally-open main contacts, a 32 V 50 Hz coil, and screw-type terminals on both the main and auxiliary circuits. The AC-3 motor-switching rating at 400 V is 7.5 kW, and at 690 V it handles 11 kW — that's the figure that tells you whether this contactor can start and stop a given induction motor under load. Coil is 32 V at 50 Hz, with an operating range of 0.8 to 1.1 times rated voltage — so it pulls in reliably between about 25.6 V and 35.2 V. Below that, don't expect it to hold. The auxiliary contact block carries 10 A at 24 V AC-12, 6 A at 230 V, and derates to 0.3 A at 220 V DC — useful for pilot-duty circuits feeding PLC inputs or indicator lamps. Fuse coordination: for Type 2 (no-weld) protection, use gL/gG 25 A fuses; for Type 1 (allow weld but clear fault), go up to 63 A. That's the spec your panel designer needs for SCCR compliance. ## Where it lives in the panel Footprint is 45 mm wide, 85 mm tall, 91 mm deep — a compact S0 frame that fits standard 35 mm DIN rail. Wire sizes: main terminals accept up to 2x 10 mm² stranded or 1x 8 AWG; control terminals take 2x 0.5 to 4 mm². Screw terminals throughout — no spring-cage here, so torque to the values on the nameplate.","metaTitle":"Siemens 3RT1025-1AC00 SIRIUS S0 Power Contactor, 3 NO, 32 V","metaDescription":"Siemens 3RT1025-1AC00 SIRIUS S0 power contactor with 3 NO main contacts, 32 V 50 Hz coil, screw terminals, IP20 front. Rated for motor loads up to 11 kW at 690 V. Current lifecycle","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"91 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"45 mm","Height":"85 mm","Maximum":"2 000 m","at 50 Hz":"0.8 ... 1.1","At The Side":"6 mm","On The Front":"IP20","1 Rated Value":"50 Hz","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Of The Terminal":"IP00","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Size of contactor":"S0","Product brand name":"SIRIUS","Degree of pollution":"3","Product designation":"power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"32 V","at 500 V rated value":"10 kW","at 690 V rated value":"11 kW","Instantaneous Contact":"0","Side-by-side mounting":"Yes","For Main Current Circuit":"screw-type terminals","Single Or Multi-Stranded":"2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 mm²","at AC-2 at 400 V rated value":"7.5 kW","at AC-4 at 400 V rated value":"15.5 A","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 25 A","at AWG conductors for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","With Type Of Coordination 1 Required":"fuse gL/gG: 63 A","Reference code acc. to DIN EN 81346-2":"Q","Number of NC contacts for main contacts":"0","Number of NO contacts for main contacts":"3","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","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","at ambient temperature 40 °C rated value":"40 A","Apparent holding power of magnet coil at AC":"7.8 V·A","Apparent pick-up power of magnet coil at AC":"61 V·A","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.82","Inductive power factor with the holding power of the coil":"0.24","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","Of The Contactor With Added Electronics-Compatible Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=152922&mlfb=3RT1025-1AC00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1AC00/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT1025-1AC00?","answer":"Submit an RFQ through this listing. Pricing and stock are confirmed at quote time through our independent distribution channel — no automated price or lead time is published here."},{"question":"Will 3RT1025-1AC00 drop into a panel specified around 3RT1023-1AL20 without rewiring?","answer":"Both are SIRIUS S0 frame contactors on 35 mm DIN rail, so the mechanical footprint and mounting are identical. The main difference is the coil: 3RT1025-1AC00 runs on 32 V 50 Hz, while the 3RT1023-1AL20 uses a different coil voltage. Verify the coil supply matches before swapping — the terminals and busbar positions are the same."},{"question":"What compliance documentation does Siemens provide for 3RT1025-1AC00?","answer":"As a standard industrial control component, it carries CE marking for the European market and is designed to meet IEC 60947-4-1 for contactors. RoHS and REACH declarations are available from Siemens documentation. UL and CSA listings are typical for the SIRIUS line but should be confirmed against the specific nameplate marking for your batch."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1AC00","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/3RT1025-1AC00 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}}