{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2025-2BB40-0CC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2025-2BB40-0CC0","canonicalUrl":"https://aoctrl.com/siemens/3RT2025-2BB40-0CC0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2025-2BB40-0CC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2025-2BB40-0CC0 power contactor, size S0, 24 VDC coil, spring-type terminals, 45 mm width, 102 mm height, 107 mm depth.","salesMarkdown":"## SIRIUS S0 contactor with spring-type coil terminals The 3RT2025-2BB40-0CC0: The spring-type coil connection means no screw tightening on the coil leads — push the stripped wire in and the cage clamps it. This saves a few seconds per termination on the line and eliminates the risk of a loose screw on a coil circuit that sees vibration. ## Mounting position and clearance envelope This matters when you're shoehorning it into a crowded panel — you aren't locked to one orientation. These are the minimum air gaps to adjacent metalwork or other devices for proper arc quenching and heat dissipation. If you crowd it tighter than 6 mm side-to-side, you risk arc flashover between adjacent contactors under fault. Physical envelope: 102 mm high, 45 mm wide, 107 mm deep. The depth dimension is the critical one for shallow back-panel enclosures — 107 mm means it clears most 120 mm deep enclosures with a few mm to spare for wiring behind the contactor. ## Wire termination and conductor sizing This covers the common control wiring range — 1.5 mm² for power circuits and 0.75 mm² or 1.0 mm² for signal wiring. The main contact wire range of 18 to 8 AWG means you can land a 10 mm² (8 AWG) feeder on the line side and a 4 mm² (12 AWG) motor lead on the load side without needing a reducer or pigtail. ## Auxiliary contact ratings and switching capability These are the make-and-break ratings for the auxiliary contacts — not the continuous carry current. If you're switching a 24 VDC PLC input, the 10 A rating is generous; but at 125 VDC the 0.9 A limit means a small relay coil is fine, a large contactor coil may exceed it. Motor horsepower rating is 3 hp at 230 V. This is the AC-3 motor switching capability — the contactor is sized for a 3 hp, 230 V single-phase or three-phase motor load. For a 3 hp motor drawing roughly 9-10 A at 230 V, the contactor's thermal capacity is adequate with margin. ## Switching frequency and timing Maximum switching rate is 1,000 operations per hour for AC-1, AC-2, AC-3, and AC-3e duty. For AC-4 duty (plugging, inching, reversing) the rate drops to 300 operations per hour. Arcing time is 10 ms, and the DC operating time (coil pull-in) is 15 to 18 ms. The arcing time is the period the arc sustains between opening contacts — 10 ms is typical for a contactor this size and means the arc extinguishes within one half-cycle at 50 Hz. The coil pull-in time of 15-18 ms means the main contacts close about 15 ms after the coil is energized. ## Temperature limits and mechanical endurance The -25 °C lower limit means the contactor is rated for unheated enclosures in temperate climates but not for deep-freeze or arctic outdoor installations without enclosure heating. This is the mechanical endurance without electrical load — the contactor's armature and spring assembly is rated for 10 million cycles before mechanical wear becomes a concern. Under full AC-3 load, electrical life will be lower, typically 1-2 million operations. ## Lifecycle status and sourcing Sourced to order against BOM quantities through independent distribution. No stock-holding claim — each RFQ is handled individually.","metaTitle":"Siemens 3RT2025-2BB40-0CC0 SIRIUS Power Contactor, S0","metaDescription":"Siemens SIRIUS 3RT2025-2BB40-0CC0 power contactor, size S0, 24 VDC coil, spring-type terminals. Rated for motor loads up to 3 hp at 230 V.","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","title":"3RT2025-2BB40-0CC0","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","description":"power contactor, AC-3e/AC-3, 17 A, 7.5 kW / 400 V, 3-pole, 24 V DC, auxiliary contacts: 1 NO + 1 NC, spring-loaded terminal, size: S0, communication-capable","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":"Yes","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","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7593eda1e94350dc764c82f5898af16d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=464828&mlfb=3RT2025-2BB40-0CC0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2025-2BB40-0CC0","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/3RT2025-2BB40-0CC0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}