{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5FF42-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5FF42-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5FF42-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5FF42-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5FF42-0DA0, molded case circuit breaker, 4-pole, line protection, rated current 250 A, breaking capacity 187 kA at 240 V, 121 kA at 415 V.","salesMarkdown":"It holds that rating flat through 50 °C — at 55 °C it derates to 243.3 A, and at 70 °C it's still good for 223 A. That thermal curve means you don't lose headroom until the panel ambient pushes past 50 °C. Breaking capacity is 187 kA at 240 V, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V. An undervoltage release (UVR) is fitted as standard — part number 3VA9608-0BB25 for the integrated auxiliary trip. No auxiliary contact block is included; that's a separate add-on if you need remote status. That 140 mm width is a 4-pole frame — it'll take up four module spaces on a DIN rail if you're using a mounting plate adapter. N-conductor protection is set at 50% of the phase rating.","metaTitle":"Siemens 3VA1225-5FF42-0DA0 SENTRON MCCB, 250 A, 4-Pole, Line","metaDescription":"Siemens SENTRON 3VA1225-5FF42-0DA0 molded case circuit breaker, 250 A rated current, 4-pole, line protection, breaking capacity 187 kA at 240 V. Sourced to order against RFQ.","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":"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":"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","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=568724&mlfb=3VA1225-5FF42-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5FF42-0DA0/alternatives.json"},"ai":{"faq":[{"question":"What does the TM240 overcurrent release mean?","answer":"TM240 is a thermal-magnetic release with a fixed thermal pickup of 250 A (the rated continuous current). The magnetic trip threshold is set at 240 A times the multiplier — it's a standard line-protection curve for feeder and main breaker applications."},{"question":"Does this breaker include an undervoltage release?","answer":"Yes, an undervoltage release (UVR) is fitted. The integrated auxiliary trip part number for the UVR is 3VA9608-0BB25."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5FF42-0DA0","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/3VA1225-5FF42-0DA0 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}}