{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-3EF32-0AC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-3EF32-0AC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-3EF32-0AC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3EF32-0AC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-3EF32-0AC0, 3-pole molded case circuit breaker, 25 A rated current, 75.6 kA breaking capacity at 240 V, TM240 overcurrent release, 2 HQ auxiliary switches.","salesMarkdown":"The Siemens SENTRON 3VA1125-3EF32-0AC0 is a 3-pole molded case circuit breaker (MCCB) rated for 25 A continuous current at 40 °C, with a TM240 thermal-magnetic overcurrent release. Its breaking capacity hits 75.6 kA at 240 V and 52.5 kA at 415 V — enough for high-fault panelboards where upstream coordination demands a robust interrupting rating. The fixed thermal release holds 25 A flat through 50 °C, then derates to 22.5 A at 70 °C; if your enclosure runs hot, size for the 70 °C column. At 240 V the 3VA1125-3EF32-0AC0 clears 75.6 kA; at 415 V it clears 52.5 kA; at 440 V it clears 32 kA; at 690 V it clears 10.5 kA. That voltage-dependent curve means the same breaker can serve a 480 V distribution panel (32 kA SCCR) or a 240 V subfeed (75.6 kA) without changing the line-up. The TM240 release has an adjustable time delay tr up to 1 s, letting you coordinate with downstream branch breakers on a selective trip scheme. ## Panel integration and auxiliary contacts Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — fits standard 3-pole MCCB mounting footprints. Two HQ auxiliary switches are built in, giving you a normally-open and normally-closed status contact for PLC or indication without an add-on module.","metaTitle":"Siemens SENTRON 3VA1125-3EF32-0AC0 MCCB, 25 A, 75.6 kA at 24","metaDescription":"Siemens SENTRON 3VA1125-3EF32-0AC0 molded case circuit breaker, 3-pole, 25 A, 75.6 kA breaking capacity at 240 V. Active lifecycle, sourced to order. Request a quote.","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":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 690 V":"10.5 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":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches HQ","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":"without auxiliaryrelease","Ground fault monitoring version":"Without","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":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching capacity class of the circuit breaker":"N","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=477138&mlfb=3VA1125-3EF32-0AC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3EF32-0AC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-3EF32-0AC0 and how do I get a price?","answer":"The part is sourced to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time. Submit an RFQ for a firm price and lead time."},{"question":"What is the breaking capacity of 3VA1125-3EF32-0AC0 at 415 V?","answer":"At 415 V the breaker clears 52.5 kA. At 240 V it clears 75.6 kA, at 440 V it clears 32 kA, and at 690 V it clears 10.5 kA."},{"question":"What is the rated current of 3VA1125-3EF32-0AC0 at elevated temperatures?","answer":"The breaker is rated 25 A at 40 °C, 45 °C, and 50 °C. It derates to 24 A at 55 °C, 23.5 A at 60 °C, 23 A at 65 °C, and 22.5 A at 70 °C."},{"question":"Does 3VA1125-3EF32-0AC0 include auxiliary contacts?","answer":"Yes, it comes with 2 HQ auxiliary switches (one normally-open, one normally-closed) built in."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-3EF32-0AC0","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/3VA1125-3EF32-0AC0 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}}