{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-4EF32-0DC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-4EF32-0DC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-4EF32-0DC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4EF32-0DC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-4EF32-0DC0, molded case circuit breaker, line protection, 3-pole, 250 A rated continuous current Iu, breaking capacity 121 kA at 240 V, 75.6 kA at 415 V, TM240 overcurrent release, undervoltage release, 2 auxiliary switches HQ.","salesMarkdown":"## What the 250 A continuous rating means for your panel At 40 °C ambient, it carries the full 250 A without derating; the curve holds flat through 50 °C, then drops to 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C. For a mill panel near a furnace or drive cabinet pulling ambient above 50 °C, that thermal headroom matters — you size the breaker for the load at actual cabinet temperature, not the nameplate number. Breaking capacity is the other number that decides whether this breaker holds or vents on a fault. At 240 V it interrupts 121 kA; at 415 V, 75.6 kA; at 440 V, 25 kA; at 690 V, 11.9 kA. If your upstream transformer can deliver 65 kA at the bus, this breaker clears it with margin. This is a line-protection version: it protects cable and bus from overload and short, not a motor or a downstream device with specific coordination curves. The auxiliary contacts are two HQ switches (form C), and there's an undervoltage release (UVR) integrated — if the control voltage drops, the breaker trips. That UVR is a separate order: 3VA9608-0BB25. ## Panel fit and mounting — what the dimensions tell you IP40 on the front keeps dust out of the mechanism; the rest of the breaker is ventilated for thermal performance, so don't seal it inside a closed box without checking the temperature derate curve above.","metaTitle":"Siemens 3VA1225-4EF32-0DC0 SENTRON MCCB, 250 A, 3-Pole, Line","metaDescription":"Siemens SENTRON 3VA1225-4EF32-0DC0 molded case circuit breaker, 250 A rated continuous current, 3-pole, line protection version. Breaking capacity 121 kA at 240 V, 75.6 kA at 415 V","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":"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":"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":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB25","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=568495&mlfb=3VA1225-4EF32-0DC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4EF32-0DC0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1225-4EF32-0DC0 at 415 V?","answer":"75.6 kA at 415 V. At 240 V it clears 121 kA; at 440 V, 25 kA; at 690 V, 11.9 kA. Use the 415 V figure for 480 V distribution panels — it's the closest standard voltage rating and the one that governs your SCCR coordination study."},{"question":"Where can I buy 3VA1225-4EF32-0DC0 and what is the lead time?","answer":"Sourced to order against an RFQ through independent industrial-automation distribution. Current pricing and lead time are confirmed at quote time — submit an RFQ for the exact delivery window. No stock count is published here because availability shifts daily across the supply network."},{"question":"What compliance documentation does Siemens provide for 3VA1225-4EF32-0DC0?","answer":"The SENTRON 3VA series carries CE marking for the European market and is designed to meet IEC 60947-2 for molded case circuit breakers. UL and CSA listings are typical for this class, though the specific listing status for this exact order code should be confirmed from the manufacturer's declaration of conformity. RoHS and REACH compliance documentation is available from Siemens upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-4EF32-0DC0","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/3VA1225-4EF32-0DC0 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}}