{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-6EF42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-6EF42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-6EF42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-6EF42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-6EF42-0AA0, molded case circuit breaker, 4-pole, TM240 thermal-magnetic release, 250 A rated current, 220 kA breaking capacity at 240 V AC.","salesMarkdown":"## What this 4-pole MCCB carries That keeps the wiring simple: power in, power out, no aux connections to pull. The interrupting ratings climb as voltage drops: 220 kA at 240 V, 154 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. ## Thermal derating — what the 250 A actually means in a warm panel Above that the TM240 release starts pulling back: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. Dimensions are 158 mm tall, 140 mm wide, 70 mm deep. That 70 mm depth keeps the can from protruding too far past the DIN rail — useful when the gland plate is tight against the back wall. ## Panel fit and mounting notes Four-pole construction means it occupies the full width of a standard 140 mm slot in a distribution panel. The TM240 release is factory-set; no field-adjustable trip curves, so verify the 250 A continuous rating matches the downstream load before installation. Maximum power loss is 57 W at full load. In a sealed enclosure that heat has to be considered for the thermal budget — a 250 A breaker dumping 57 W into a small box can raise ambient enough to trigger the derating curve above.","metaTitle":"Siemens 3VA1225-6EF42-0AA0 SENTRON MCCB, 4P, 250 A, TM240","metaDescription":"Siemens 3VA1225-6EF42-0AA0 SENTRON molded case circuit breaker, 4-pole, 250 A, TM240 release, 220 kA at 240 V. Current production. Sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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":"No","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","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":"0","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":"https://cdn.aoctrl.com/fd7f43bdfed00d812764159da846b02c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=446250&mlfb=3VA1225-6EF42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-6EF42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the physical dimensions of this MCCB?","answer":"158 mm tall, 140 mm wide, and 70 mm deep. The 70 mm depth is shallow enough for most standard-depth enclosures."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-6EF42-0AA0","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/3VA1225-6EF42-0AA0 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}}