{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT7025-1AH25","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT7025-1AH25","canonicalUrl":"https://aoctrl.com/siemens/3RT7025-1AH25","factsUrl":"https://aoctrl.com/api/mcp/products/3RT7025-1AH25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S0 contactor, 3RT7025-1AH25, 3-pole, AC coil, 690 V rated insulation, IP20 finger-safe terminals, screw and snap-on DIN rail mount.","salesMarkdown":"## S0 Frame Contactor with AC Coil — What Fits The Siemens 3RT7025-1AH25 is a size S0 contactor in the SIRIUS family — three main poles, all normally open, with an AC-operated coil. The S0 frame is the mid-range footprint in the SIRIUS line: 55 mm wide, 85.5 mm tall, 91 mm deep, and it snaps onto 35 mm DIN rail per EN 50022 (screw-fix also possible). The AC coil draws 0.72 W on closing and holds at 0.24 W, so the control transformer only needs to cover the inrush peak, not the sustained load. The IP20 rating on the front and terminals means finger-safe but not sealed — install inside an enclosure rated for the environment. ## Switching Duty and Coordination For motor starting (AC-3), the contactor is rated for up to 800 switching cycles per hour. For reversing or inching duty (AC-4), the maximum drops to 250 cycles per hour — the arc energy in AC-4 is higher, so the mechanical life is derated accordingly. Short-circuit protection coordination is specified: for type 2 coordination, use a 25 A gL/gG fuse (NH 3NA); for type 1 coordination, a 63 A fuse of the same class. This matters when the contactor sits downstream of a motor circuit protector — the fuse size determines whether the contactor survives a fault or needs replacement. The screw terminals accept 2 x (0.5 to 1.5 mm²) solid or stranded, or 2 x (0.75 to 2.5 mm²) with ferrule — strip length is standard for the terminal type.","metaTitle":"Siemens 3RT7025-1AH25 S0 Contactor, 3-Pole AC Coil, 690V","metaDescription":"Siemens 3RT7025-1AH25 S0 contactor, 3-pole, AC coil, 690V rated insulation, IP20 terminals, screw and snap-on DIN rail mount. Active production, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"91 mm","Width":"55 mm","Height":"85.5 mm","at 50 Hz":"0.24","at 60 Hz":"0.24","On The Front":"IP20","During Storage":"-25 ... +70 °C","Of The Terminal":"IP20","at AC-3 maximum":"800 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","During Operation":"-10 ... +55 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","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)","Degree Of Pollution":"3","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"48 V","at 60 Hz rated value":"48 V","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","Insulation Voltage Rated Value":"690 V","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","With Type Of Assignment 2 Required":"gL/gG NH 3NA: 25 A","closing power of magnet coil at DC":"0.72 W","holding power of magnet coil at DC":"0.24 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"gL/gG NH 3NA: 63 A","shock resistance with sine pulse at AC":"12.5g / 5 ms, 7.8g / 10 ms","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","Contact Reliability Of Auxiliary Contacts":"acceptability for PLC control (17 V, 5 mA)","Type Of Voltage Of The Control Supply Voltage":"AC","operating voltage at AC-3 rated value maximum":"690 V","operational current at DC-13 at 220 V rated value":"0.3 A","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","Connectable Conductor Cross-Section For Main Contacts Finely Stranded With Core End Processing":"6 mm²","Connectable Conductor Cross-Section For Auxiliary Contacts Finely Stranded With Core End Processing":"0.5 ... 2.5 mm²"}},"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=1533922&mlfb=3RT7025-1AH25","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT7025-1AH25/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT7025-1AH25 and what is the lead time?","answer":"This part is sourced and quoted to order through independent distribution. Availability and current pricing are confirmed at quote time against an RFQ — no stock count or lead time is published here, but we can source it."},{"question":"Will 3RT7025-1AH25 drop into a panel specified around 3RT6028-1AB00?","answer":"Both are S0 frame contactors on 35 mm DIN rail with the same 55 mm width and screw terminals, so the mechanical footprint and rail position are identical. The difference is the coil: 3RT7025-1AH25 uses an AC coil, while 3RT6028-1AB00 uses a different coil voltage — verify the control voltage matches before swapping."},{"question":"What is the depth of 3RT7025-1AH25?","answer":"The depth is 91 mm from the mounting surface to the front of the contactor."},{"question":"What compliance documentation is available for 3RT7025-1AH25?","answer":"The contactor carries IP20 finger-safe terminals, is rated for pollution degree 3, and has a rated insulation voltage of 690 V with 6 kV surge withstand. Standard Siemens declarations (CE, UKCA, RoHS, REACH) are available on request — the part is designed for IEC/EN 60947-4-1 compliance as a SIRIUS series component."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT7025-1AH25","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/3RT7025-1AH25 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}}