{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-4EF32-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-4EF32-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-4EF32-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EF32-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-4EF32-0BA0, 3-pole molded case circuit breaker, 25 A rated continuous current, TM240 thermal-magnetic trip, interrupting 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, 11.9 kA at 690 V.","salesMarkdown":"The interrupting ratings are voltage-dependent: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V — so the available fault current at the panel's supply voltage determines which rating applies. The breaker carries 25 A continuously up to 50 °C ambient; above that it derates linearly to 22.5 A at 70 °C. In a sealed panel or high-ambient cabinet, that derating curve governs the actual load you can protect — not the 25 A nameplate. Dimensions are 130 mm height, 76.2 mm width, 70 mm depth, fitting standard 3-pole MCCB panel cutouts. Front protection is IP40, so the operator face is touch-safe; the rear and sides rely on the panel enclosure for IP rating. ## Undervoltage release and auxiliary options No auxiliary contact version is fitted (no status feedback contact), and there is no communication function, phase failure detection, ground fault monitoring, or voltage trigger. The trip indicator is also absent. For applications requiring remote status or shunt trip, the UVR is the only integrated release; additional functions require add-on modules.","metaTitle":"Siemens 3VA1125-4EF32-0BA0 SENTRON MCCB, 25 A, 121 kA at 240","metaDescription":"Siemens SENTRON 3VA1125-4EF32-0BA0 molded case circuit breaker, 25 A rated continuous current, interrupting up to 121 kA at 240 V. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 690 V":"11.9 kA","at 40 °C":"25 A","at 45 °C":"25 A","at 50 °C":"25 A","at 55 °C":"24 A","at 60 °C":"23.5 A","at 65 °C":"23 A","at 70 °C":"22.5 A","Trip indicator":"No","Number of poles":"3","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"Yes","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"Without","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"25 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB11","Design of the overcurrent release":"TM240","Design of short-circuit protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"25 A","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"160 A","Adjustable response value current / lr min.":"18 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LI","Switching capacity class of the circuit breaker":"S","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"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=120665&mlfb=3VA1125-4EF32-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EF32-0BA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-4EF32-0BA0 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."},{"question":"What is the closest functional second-source for 3VA1125-4EF32-0BA0?","answer":"The 3VA1112-5EF32-0CA0 is the closest functional peer — same 3-pole SENTRON platform and undervoltage release, but with a different trip rating and interrupting capacity; verify the trip curve and SCCR before substituting."},{"question":"What compliance documentation does Siemens provide for 3VA1125-4EF32-0BA0?","answer":"As a SENTRON MCCB, it carries IEC/EN 60947-2 certification; RoHS and REACH declarations are available from Siemens documentation. Specific UL/CSA listing should be confirmed per the variant marking."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-4EF32-0BA0","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/3VA1125-4EF32-0BA0 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}}