{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1325-1BD40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1325-1BD40","canonicalUrl":"https://aoctrl.com/siemens/3RT1325-1BD40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1325-1BD40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, 3RT1325-1BD40, S0 frame, 4 NO main contacts, 7.5 kW at AC-2 400 V, screw terminals, IP20 front.","salesMarkdown":"It carries four normally-open main contacts and is rated for 7.5 kW at AC-2 duty on a 400 V supply — that's the standard rating for slip-ring motor starting or moderate inrush loads. Side-by-side mounting is allowed without derating for the basic thermal current, so you can pack multiple units on the same rail for multi-motor groups. The contactor is also rated for AC-1 at 230 V (6 A) and 400 V (3 A), covering heater or lighting circuits. Coordination fusing is specified: type 1 coordination calls for a 63 A gL/gG fuse, while type 2 requires a 25 A gL/gG fuse. That difference matters for selectivity studies — type 2 limits let-through energy to protect the contactor in a fault, type 1 allows the contactor to be replaced after a short circuit. The magnet coil draws 5.4 W both on closing and holding — a DC-operated coil that holds at the same power level, so there's no inrush spike to size your control transformer around. Dimensions: 85 mm high, 61 mm wide, 101 mm deep. Terminal capacity for the main circuit: screw-type terminals accept 2x (1 to 2.5 mm²) solid or 2x (2.5 to 6 mm²) stranded, up to 2x 10 mm² maximum. For control wiring, the coil terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) with ferrule. AWG equivalents: main contacts 2x (20 to 16), 2x (18 to 14), 1x 12. Side clearance: 6 mm at the side is required for heat dissipation when mounted side-by-side.","metaTitle":"Siemens 3RT1325-1BD40 SIRIUS Power Contactor, 4 NO, 7.5 kW A","metaDescription":"Siemens 3RT1325-1BD40 SIRIUS power contactor, S0 frame, 4 NO main contacts, rated 7.5 kW at AC-2 400 V. Current lifecycle. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"101 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","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"42 V","On The Front":"IP20","Initial Value":"0.8","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","Full-scale value":"1.1","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":"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","Closing power of magnet coil at DC":"5.4 W","Holding power of magnet coil at DC":"5.4 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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number of poles for main current circuit":"4","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":"35 A","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=509069&mlfb=3RT1325-1BD40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1325-1BD40/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1325-1BD40 and how do I get a price?","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 price and lead time."},{"question":"What is the closest functional second-source for 3RT1325-1BD40?","answer":"The 3RT1023-1AL20 is a smaller-frame SIRIUS contactor (S00 vs S0) with a lower AC-2 rating. It will not drop into the same panel without rewiring — the footprint, terminal spacing, and coil voltage differ. For a direct functional match within the S0 frame, stay with the 3RT1325 series."},{"question":"What compliance documentation does Siemens provide for 3RT1325-1BD40?","answer":"As a current-production SIRIUS component, it carries CE marking, UL/CSA recognition, and RoHS/REACH compliance declarations. The manufacturer provides a declaration of conformity and a UL file number on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1325-1BD40","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/3RT1325-1BD40 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}}