{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5FF42-0JA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5FF42-0JA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5FF42-0JA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5FF42-0JA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5FF42-0JA0, molded case circuit breaker, 4-pole, 250 A, line protection, TM240 thermal-magnetic release, 187 kA at 240 V, IP40 front.","salesMarkdown":"The interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V, which covers most industrial distribution panels and motor control centers up to those fault levels. The 250 A continuous rating holds flat from 40 °C to 50 °C, then derates to 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C. That means in a warm panel — say 55 °C ambient — you lose about 6.7 A of headroom; at 70 °C you lose 27 A. Plan your load bundle accordingly if the breaker sits near other heat sources. The 187 kA at 240 V is the highest interrupting rating on this breaker; at 415 V it drops to 121 kA, and at 690 V to 17 kA. For a 480 V panel (common in North America) the relevant figure is the 415 V or 440 V line — 121 kA or 36 kA respectively — so verify your available fault current against the voltage you actually run. The 4-pole footprint is wider than a 3-pole; verify gland-plate cutout and busbar spacing before committing the panel layout. The unit ships without auxiliary contacts or a communication module — those are add-on accessories (the integrated auxiliary trip is order code 3VA9688-0BL32). If you need remote status or shunt-trip control, order those separately.","metaTitle":"Siemens 3VA1225-5FF42-0JA0 SENTRON MCCB, 250 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA1225-5FF42-0JA0 molded case circuit breaker, 250 A rated continuous current, 4-pole, line protection, TM240 release, 187 kA at 240 V. Active production. Sourced","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"140 mm","Height":"158 mm","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"36 kA","at 690 V":"17 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":"4","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":"Without","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","Design of the N-conductor protection":"50%","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":"600 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":"0","Protective function of the overcurrent release":"LI","Switching capacity class of the circuit breaker":"M","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=568730&mlfb=3VA1225-5FF42-0JA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5FF42-0JA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1225-5FF42-0JA0 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What is the interrupting capacity of 3VA1225-5FF42-0JA0 at 415 V?","answer":"At 415 V the interrupting capacity is 121 kA."},{"question":"Does 3VA1225-5FF42-0JA0 include a shunt trip or auxiliary contacts?","answer":"It includes a shunt trip (STL) as the auxiliary release, but no auxiliary contacts and no undervoltage release. The integrated auxiliary trip accessory is order code 3VA9688-0BL32."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5FF42-0JA0","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/3VA1225-5FF42-0JA0 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}}