{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1325-3XF48-0LA3","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1325-3XF48-0LA3","canonicalUrl":"https://aoctrl.com/siemens/3RT1325-3XF48-0LA3","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1325-3XF48-0LA3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 3RT1325-3XF48-0LA3, 4 NO main contacts, 7.5 kW AC-2 at 400 V, 110 V DC coil with varistor, screw terminals, IP20 front, 71 mm width.","salesMarkdown":"The Siemens SIRIUS 3RT1325-3XF48-0LA3 is a size S0 power contactor with four normally-open main contacts, rated at 7.5 kW for AC-2 duty at 400 V — that's the motor-switching rating for slip-ring or wound-rotor motors, where the load current stays high through the opening arc. The 110 V DC coil includes a built-in varistor surge suppressor, so you don't need to add an external snubber on the coil circuit. The 7.5 kW AC-2 at 400 V rating governs the real motor load this contactor can switch — AC-2 is the category for starting and plugging of slip-ring motors, where the contactor must interrupt the rotor current at standstill. For AC-12 resistive loads (heater, lighting) it's rated at 10 A maximum. Type 1 coordination allows up to 63 A. That's the fuse sizing you need to protect the contactor during a bolted fault — Type 2 means the contactor remains usable after clearing the fault, Type 1 means it may need replacement. The contactor mounts on a 35 mm DIN rail per EN 50022, either screw-fixed or snap-on, and fits a standard S0 footprint — 71 mm wide, 119 mm high, 101 mm deep. The main circuit terminals are screw-type, accepting up to 2x 10 mm² or 1x AWG 12 solid/stranded — the wire range is 0.25 to 2.5 mm² for the auxiliary contacts (2x conductors).","metaTitle":"Siemens SIRIUS 3RT1325-3XF48-0LA3 Power Contactor, S0, 4-Pol","metaDescription":"Siemens SIRIUS 3RT1325-3XF48-0LA3 power contactor, size S0, 4 NO main contacts, 7.5 kW AC-2 at 400 V, 110 V DC coil with varistor, screw terminals, IP20 front. Current production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"101 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"71 mm","Height":"119 mm","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"110 V","On The Front":"IP20","Initial Value":"0.7","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":"-40 ... +70 °C","Full-scale value":"1.25","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","Instantaneous Contact":"2","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","Design of the surge suppressor":"with varistor","Closing power of magnet coil at DC":"15 W","Holding power of magnet coil at DC":"11 W","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 (20 ... 16), 2x (18 ... 14), 1x 12","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":"4","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Number of poles for main current circuit":"4","at AWG conductors for auxiliary contacts":"2x (24 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"spring-loaded terminals","at ambient temperature 40 °C rated value":"35 A","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Type of voltage of the control supply voltage":"DC","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=270009&mlfb=3RT1325-3XF48-0LA3","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1325-3XF48-0LA3/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of this contactor?","answer":"The depth is 101 mm, which includes the terminal overhang. That's the dimension you need for enclosure depth clearance."},{"question":"What wire sizes does the main circuit accept?","answer":"Screw terminals accept 2x (1 to 2.5 mm²), 2x (2.5 to 6 mm²), or up to 2x 10 mm² solid/stranded. AWG equivalents: 2x (20 to 16), 2x (18 to 14), or 1x 12."},{"question":"Will this contactor drop into a panel designed for 3RT1023-1AL20?","answer":"Both are S0 frame size and mount on 35 mm DIN rail, so the footprint matches. But verify the coil voltage — the 3RT1325-3XF48-0LA3 uses 110 V DC, while the 3RT1023-1AL20 may differ. Also check the main contact count: this unit has 4 NO contacts; the peer may have a different NO/NC mix."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1325-3XF48-0LA3","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/3RT1325-3XF48-0LA3 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}}