{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1325-1AB00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1325-1AB00","canonicalUrl":"https://aoctrl.com/siemens/3RT1325-1AB00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1325-1AB00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1325-1AB00, size S0 power contactor, 4-pole, 24 V 50 Hz coil, 7.5 kW at 400 V AC-2, screw terminals, IP20 front, IP00 terminals.","salesMarkdown":"It is rated for 7.5 kW at 400 V in AC-2 duty, which covers slip-ring motor starting and reversing — the kind of load that demands higher switching frequency than a standard AC-3 contactor handles. The coil pulls 24 V at 50 Hz, holding at 7.8 VA once sealed. Screw-type terminals on both the main and auxiliary circuits keep wiring straightforward for panel builders who prefer a proven termination over spring-cage novelty. Side-by-side mounting is allowed, which matters when you are packing multiple contactors into a tight enclosure row. That is the motor power this contactor can switch under slip-ring duty, where the current peaks during starting but stays within the contactor's thermal capacity. For resistive loads (AC-1), the same contactor carries 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V — these are the continuous current limits for heaters or lighting banks. The coil holding power is 7.8 VA, a modest draw that keeps the control transformer sizing reasonable when multiple contactors are held in simultaneously. ## Coordination and wiring For type 2 coordination (no welding after a short circuit), Siemens specifies a gL/gG fuse of 25 A. For type 1 coordination (welding allowed, but no fire or shock hazard), the fuse rating jumps to 63 A. These are the values to hand to the panel designer when sizing the branch circuit protection. The main circuit accepts solid conductors from 0.5 to 4 mm² (two per terminal) and stranded up to 6 mm² (two per terminal), with a maximum of 10 mm² for a single conductor. AWG equivalents run from 20 to 12 for the main contacts.","metaTitle":"Siemens 3RT1325-1AB00 SIRIUS Power Contactor, 4-pole, 7.5 kW","metaDescription":"Siemens SIRIUS 3RT1325-1AB00 4-pole power contactor, size S0, 24 V 50 Hz coil, 7.5 kW at 400 V AC-2, screw terminals, IP20 front. Sourced to order against RFQ.","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":"61 mm","Height":"85 mm","at 50 Hz":"0.8 ... 1.1","On The Front":"IP20","1 Rated Value":"50 Hz","Of The Terminal":"IP00","lifecycle_stage":"current","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Size Of Contactor":"S0","Solid Or Stranded":"2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 mm²","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":"24 V","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"7.5 kW","at AWG cables for main contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 25 A","reference code acc. to IEC 81346-2":"Q","Ambient Temperature During Operation":"-25 ... +60 °C","With Type Of Coordination 1 Required":"fuse gL/gG: 63 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"4","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":"4","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","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","Required Spacing For Grounded Parts At The Side":"6 mm","Inductive Power Factor With Closing Power Of The Coil":"0.82","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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","number of NC contacts for auxiliary contacts instantaneous contact":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=59654&mlfb=3RT1325-1AB00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1325-1AB00/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RT1325-1AB00?","answer":"The 3RT1017-1AK61 is a smaller SIRIUS contactor (size S00, 3-pole) that shares the same 24 V 50 Hz coil voltage and screw-terminal format, but it is rated for lower motor power and has three poles instead of four. It will not drop into a panel wired for the 4-pole S0 footprint without rewiring the main circuit."},{"question":"Where can I buy 3RT1325-1AB00?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is 3RT1325-1AB00's depth?","answer":"91 mm. Combined with a width of 61 mm and height of 85 mm, it fits the standard S0 contactor footprint."},{"question":"What wire sizes does 3RT1325-1AB00 accept on the main terminals?","answer":"Solid: 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded: 2x (1 to 2.5 mm²) and 2x (2.5 to 6 mm²), max 2x 10 mm². AWG: 2x (20 to 16) and 2x (18 to 14), single 12 AWG."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1325-1AB00","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/3RT1325-1AB00 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}}