{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1025-1BB40-ZW98","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1025-1BB40-ZW98","canonicalUrl":"https://aoctrl.com/siemens/3RT1025-1BB40-ZW98","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1BB40-ZW98","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1025-1BB40-ZW98 power contactor, S0 frame, 24 VDC coil, screw terminals, 11 kW at 690 V AC-3, IP20 front, DIN rail mount.","salesMarkdown":"It carries a 24 VDC coil and is rated for AC-3 duty at 11 kW on 690 V and 10 kW on 500 V — the figures that govern real motor switching, not just the thermal current. The AC-3 motor-switching rating is the one that matters for most BOM lines: 11 kW at 690 V and 10 kW at 500 V. This contactor handles induction motors up to those power levels in standard starting duty. For short-circuit coordination, type 2 (no damage to the contactor) requires a 25 A gL/gG fuse upstream; type 1 (contactor may need replacement) allows a 63 A gL/gG fuse. That's a practical difference when designing a panel with selective coordination requirements. Screw-type terminals on the main circuit accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) solid conductors. For AWG, that's 2x (16 to 12), 2x (14 to 10), or 1x 8. Side-by-side mounting is permitted with 6 mm spacing at the side — no derating required for adjacent units in the same row. Front protection is IP20, which is standard for enclosed panels; the terminal area itself is IP00, so live parts are exposed when the contactor is not inside an enclosure. That's normal for panel-mount gear but worth noting for any maintenance access. The SIRIUS platform is widely stocked globally, so lead times are predictable for this frame size. No need to broker or hunt surplus — genuine is genuine through any authorized channel.","metaTitle":"Siemens 3RT1025-1BB40-ZW98 SIRIUS Power Contactor, 24 VDC, 1","metaDescription":"Siemens SIRIUS 3RT1025-1BB40-ZW98 power contactor, S0 frame, 24 VDC coil, 11 kW at 690 V AC-3. Current lifecycle status. Screw terminals, DIN rail mount. Sourced to order against R","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":"45 mm","Height":"85 mm","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"24 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","at 500 V rated value":"10 kW","at 690 V rated value":"11 kW","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","at AC-4 at 400 V rated value":"15.5 A","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 (16 ... 12), 2x (14 ... 10), 1x 8","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":"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","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":"40 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=23263&mlfb=3RT1025-1BB40-ZW98","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1025-1BB40-ZW98/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative — the 3RT1015-1BB42?","answer":"The 3RT1015-1BB42 is a smaller S00 frame contactor with a 24 VDC coil, but it is rated for lower motor power — typically up to 5.5 kW at 400 V AC-3 versus the 3RT1025's 11 kW at 690 V. The S00 frame is 22.5 mm wide versus 45 mm for the S0, so it will not physically fit the same DIN rail footprint without an adapter plate. For a panel specified around the 3RT1015-1BB42, the 3RT1025-1BB40-ZW98 is physically larger and electrically overrated — it will fit the rail but occupies more space and may require coordination fuse changes."},{"question":"What is the depth of this contactor?","answer":"The depth is 101 mm from the mounting surface to the furthest projection."},{"question":"What wire sizes does the main circuit 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). AWG equivalents: 2x (16 to 12), 2x (14 to 10), or 1x 8."},{"question":"Will the 3RT1025-1BB40-ZW98 drop into a panel specified for the 3RT1015-1BB42 without rewiring?","answer":"No. The S0 frame (45 mm wide) is twice the width of the S00 frame (22.5 mm). The DIN rail mounting is the same 35 mm profile, so it physically clips on, but the wider footprint means adjacent components must be shifted. The screw terminal pattern is similar, but the main circuit wire sizes are larger on the S0, so existing conductors may need re-termination if they were sized for the smaller contactor's rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1025-1BB40-ZW98","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/3RT1025-1BB40-ZW98 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}}