{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-6EF42-0AH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-6EF42-0AH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-6EF42-0AH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-6EF42-0AH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA series, molded case circuit breaker, 4-pole, 250 A (40-50 °C), TM240 thermal-magnetic release, 220 kA at 240 V AC, 70 x 140 x 158 mm.","salesMarkdown":"The Siemens SENTRON 3VA1225-6EF42-0AH0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 250 A across its 40 °C to 50 °C ambient range — no derating needed up to that point (cites:,). Above 50 °C it derates linearly to 223 A at 70 °C (cites:,). The TM240 thermal-magnetic release provides fixed overload and short-circuit protection curves, with a trip indicator for visual fault confirmation (cites:,). Breaking capacity reaches 220 kA at 240 V AC, stepping down to 154 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V — sufficient for high-fault utility feeds and transformer secondaries (cites:,). At 70 mm deep, 140 mm wide, and 158 mm tall, this MCCB occupies a standard SENTRON 3VA footprint — expect a 4-pole unit to span roughly 9 module widths on a DIN rail or direct-mount plate (cites:,). The breaker is designed without undervoltage release, ground-fault monitoring, or communication function, so those features must be added externally if required (cites:,). ## Operating Environment and Storage The thermal derating curve above 50 °C is the binding constraint for continuous load in warm enclosures.","metaTitle":"Siemens SENTRON 3VA1225-6EF42-0AH0 MCCB, 250 A, 4-Pole, TM24","metaDescription":"Siemens SENTRON 3VA1225-6EF42-0AH0 molded case circuit breaker, 250 A at 40-50 °C, 4-pole, 220 kA at 240 V. TM240 release. Active production. Quoted 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":"140 mm","Height":"158 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"220 kA","at 415 V":"154 kA","at 440 V":"75.6 kA","at 500 V":"30 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 A","at 60 °C":"237 A","at 65 °C":"230 A","at 70 °C":"223 A","Depth [In]":"2.76 in","Width [In]":"5.51 in","Height [In]":"6.22 in","Trip Indicator":"Yes","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"57 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA12256EF420AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","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":"without","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"H","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"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=568836&mlfb=3VA1225-6EF42-0AH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-6EF42-0AH0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1225-6EF42-0AH0 at 415 V?","answer":"At 415 V AC, the rated ultimate breaking capacity (Icu) is 154 kA (cites:). At 240 V it reaches 220 kA, and at 690 V it is 17 kA (cites:,)."},{"question":"What does the TM240 release designation mean on this MCCB?","answer":"TM240 indicates a thermal-magnetic release with a fixed current rating of 240 A — the breaker frame is rated 250 A, and the TM240 release sets the continuous current threshold at 240 A, with magnetic trip for short-circuit protection (cites:,)."},{"question":"Where can I buy 3VA1225-6EF42-0AH0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-6EF42-0AH0","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/3VA1225-6EF42-0AH0 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}}