{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-4EF32-0JC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-4EF32-0JC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-4EF32-0JC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4EF32-0JC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-4EF32-0JC0, molded case circuit breaker, 3-pole, 250 A rated continuous current, line protection, 70 mm depth, 105 mm width, 158 mm height.","salesMarkdown":"The interrupting ratings climb to 121 kA at 240 V, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V — those numbers tell you the fault-clearing capability at each voltage level, and the 415 V figure is the one most European 400 V distribution panels care about. It does not carry undervoltage release, phase failure detection, ground fault monitoring, or communication functions — it is a straightforward thermal-magnetic breaker with a voltage-trigger capability. ## Thermal derating and endurance Above that, it steps down: 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C. If your panel runs hot (e.g., inside a non-ventilated enclosure near transformers), use the 55 °C or 60 °C figure for sizing; the breaker will still carry load but at a reduced limit. The 3VA1225-4EF32-0JC0 measures 70 mm deep, 105 mm wide, and 158 mm tall. The 105 mm width is the standard 3-pole MCCB footprint for this SENTRON frame — it occupies three 35 mm DIN-rail modules (3 x 35 mm). Depth of 70 mm means it will clear most standard enclosure backplates and gland plates, but check the busbar or cable entry clearance if you are retrofitting into a shallow panel.","metaTitle":"Siemens 3VA1225-4EF32-0JC0 SENTRON MCCB, 250 A, 3-Pole, Line","metaDescription":"Siemens 3VA1225-4EF32-0JC0 SENTRON molded case circuit breaker, 250 A rated continuous current, 3 poles, line protection, 121 kA at 240 V, active production, available 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":"105 mm","Height":"158 mm","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"25 kA","at 690 V":"11.9 kA","at 40 °C":"250 A","at 45 °C":"250 A","at 50 °C":"250 A","at 55 °C":"243.3 A","at 60 °C":"236.5 A","at 65 °C":"229 A","at 70 °C":"223 A","Trip indicator":"No","Number of poles":"3","Product version":"Line protection","Voltage trigger":"Yes","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":"250 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL32","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.":"250 A","Adjustable response value current / li max.":"2 500 A","Adjustable response value current / li min.":"1 250 A","Adjustable response value current / lr min.":"175 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":"S","Max. rated operational current of the frame size":"250 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.":"25 x 8","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"13 x 1"}},"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=568501&mlfb=3VA1225-4EF32-0JC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4EF32-0JC0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1225-4EF32-0JC0?","answer":"Submit an RFQ against this order code; we source through independent distribution and can confirm current pricing and stock availability at the time of quotation."},{"question":"What are the key interrupting ratings for 3VA1225-4EF32-0JC0?","answer":"It is rated 121 kA at 240 V, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V — the 415 V figure is the one most relevant for 400 V distribution panels."},{"question":"What is the continuous current rating and thermal derating for this MCCB?","answer":"Rated continuous current Iu is 250 A, holding flat from 40 °C to 50 °C ambient. Above that it derates: 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-4EF32-0JC0","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/3VA1225-4EF32-0JC0 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}}