{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2025-2BB40-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2025-2BB40-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RT2025-2BB40-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2025-2BB40-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, 3RT2025-2BB40-ZX95, Size S0, 24 V DC coil, spring-type terminals, 10 A at 24 V DC.","salesMarkdown":"The 24 V DC coil pulls in reliably; the spring-type terminals (cage clamp) accept solid or stranded wire from 1 to 10 mm² on the main circuit, and dual 0.5 to 2.5 mm² on the auxiliary circuit — no screw torque to verify, which speeds panel assembly. Rated switching frequency hits 1,000 operating cycles per hour under AC-1, AC-2, AC-3, and AC-3e duty, and 300 cycles per hour under the heavier AC-4 category (plugging / inching). That AC-4 figure matters if your application does frequent reversing or jogging — the contactor is rated for it, not just occasional use. That 6 mm side clearance means you can pack contactors side-by-side on the rail without wasting panel width — useful when racking multiple contactors in a motor control centre. The main contacts are rated for AC-3 duty at 400 V, 3 A, and at 230 V it carries a 3 hp motor load — typical for a small conveyor drive or pump. For DC switching, the 24 V DC rating is 10 A, dropping to 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, and 0.3 A at 220 V. The DC derating curve is steep because DC arcs don't self-extinguish at zero-crossing; the contactor's arc chamber is sized for that, but don't expect the AC-3 current rating to hold on DC. That arcing time is consistent across the DC voltage range — the contactor clears the arc within one mains half-cycle equivalent. An auxiliary switch is built in (1 NO + 1 NC, per the 18-8 contact configuration), which saves a separate aux block for feedback to the PLC or status indication on the HMI. ## Environmental range and lifecycle status","metaTitle":"Siemens 3RT2025-2BB40-ZX95 SIRIUS Power Contactor, 24 VDC, S","metaDescription":"Siemens SIRIUS 3RT2025-2BB40-ZX95 power contactor, 24 VDC coil, Size S0 frame, spring-type terminals, 10 A at 24 VDC. Current production. Quoted on request.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"107 mm","Solid":"1 ... 10 mm²","Width":"45 mm","at DC":"15 ... 18 ms","Height":"102 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"1 ... 10 mm²","Downwards":"10 mm","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","Rated Value":"24 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"1 000 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"300 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","Full-Scale Value":"1.1","at AC-3e maximum":"1 000 1/h","For Main Contacts":"18 ... 8","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S0","Solid Or Stranded":"2x (0.5 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Power contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"3 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.6 A","at 480 V rated value":"14 A","at 500 V rated value":"2 A","at 600 V rated value":"17 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"spring-loaded terminals","at 110/120 V rated value":"1 hp","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"5 hp","at 460/480 V rated value":"10 hp","at 575/600 V rated value":"15 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"1.8 W","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"15.5 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2009","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"35.2 A","at AC-5b up to 400 V rated value":"14.1 A","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA)","Without Load Current Share Typical":"5.9 W","closing power of magnet coil at DC":"5.9 W","holding power of magnet coil at DC":"5.9 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 63A (690V,100kA), aM: 32A (690V,100kA), BS88: 63A (415V,80kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"0.6 W","for AWG cables for auxiliary contacts":"2x (20 ... 14)","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"DC","Limited To 1 S Switching At Zero Current Maximum":"225 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"225 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"189 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"140 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"115 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / P600","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"10 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","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":"https://cdn.aoctrl.com/5a4e66bdbbdc825c2fa3af30bce3961f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=210160&mlfb=3RT2025-2BB40-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2025-2BB40-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 3RT2025-2BB40-ZX95?","answer":"The depth is 107 mm. Combined with the 45 mm width and 102 mm height, this Size S0 contactor fits standard DIN-rail enclosures — but verify the 107 mm projection behind the rail against your enclosure depth."},{"question":"What wire sizes does the spring terminal accept?","answer":"The main circuit accepts solid or stranded wire from 1 to 10 mm². The auxiliary circuit accepts dual wires of 0.5 to 2.5 mm² each. Spring-cage terminals eliminate screw-torque checks and speed wiring."},{"question":"Where can I buy 3RT2025-2BB40-ZX95 and how is it quoted?","answer":"This part is sourced through independent industrial distribution. Submit an RFQ for current pricing and availability; stock and lead time are confirmed at quote time. Volume inquiries are welcome."},{"question":"Will 3RT2025-2BB40-ZX95 drop into a panel specified around 3RT2015-1BW42?","answer":"Both are Size S0 SIRIUS contactors with the same 45 mm width and DIN-rail mounting, so the mechanical footprint is identical. The key difference is the coil voltage — verify your control voltage matches the 24 V DC coil on this variant before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2025-2BB40-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/3RT2025-2BB40-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}}