{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1325-1BM40-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1325-1BM40-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RT1325-1BM40-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1325-1BM40-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 4 NO main contacts, 7.5 kW at AC-2 400 V, screw terminals, snap-on DIN rail mount.","salesMarkdown":"## SIRIUS S0 power contactor for motor and resistive loads It carries 4 normally open main contacts and is rated for screw-type terminal connections. Rated at 7.5 kW at AC-2 duty on 400 V, this contactor is sized for moderate motor applications like pumps, fans, and compressors where starting current and load disconnection are regular events. The AC-2 rating covers slip-ring motor switching with moderate overloads. The S0 footprint occupies 61 mm width, 85 mm height, and 101 mm depth — a compact envelope that fits standard panel layouts without crowding adjacent devices. Side-by-side mounting is permitted, which simplifies multi-contactor assemblies for star-delta or reversing starters. Wire capacity for main circuit terminals: accepts solid conductors 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), and up to 2x (0.75 to 4 mm²) maximum. For stranded or finely stranded wire with ferrules, the range is 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²). AWG equivalents are 2x (20 to 16) and 2x (18 to 14) for solid, with a single 12 AWG maximum. Type 1 coordination (contactor may need replacement after fault) allows a 63 A gL/gG fuse. This lets the panel designer balance protection selectivity against component survival. DC coil closing and holding power are both 5.4 W, which simplifies power supply sizing for the control circuit.","metaTitle":"Siemens 3RT1325-1BM40-ZX95 SIRIUS Power Contactor, S0, 4NO,","metaDescription":"Siemens SIRIUS power contactor 3RT1325-1BM40-ZX95, size S0, 4 main NO contacts, rated 7.5 kW at AC-2 400 V. Screw terminals, snap-on DIN rail mount. Current production.","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":"220 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=535488&mlfb=3RT1325-1BM40-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1325-1BM40-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this contactor?","answer":"The contactor is rated 7.5 kW at AC-2 400 V for motor loads, and 10 A at AC-12 for resistive loads. It has 4 normally open main contacts, a mechanical endurance of 10,000,000 cycles, and operates from -25 to +60 °C."},{"question":"What wire sizes does the main circuit terminal accept?","answer":"Solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Finely stranded with ferrules: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²). AWG equivalents: 2x (20 to 16), 2x (18 to 14), and 1x 12."},{"question":"What are the short-circuit protection requirements?","answer":"Type 2 coordination requires a 25 A gL/gG fuse upstream. Type 1 coordination allows a 63 A gL/gG fuse."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1325-1BM40-ZX95","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/3RT1325-1BM40-ZX95 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}}