{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-6EF42-0AJ0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-6EF42-0AJ0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-6EF42-0AJ0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-6EF42-0AJ0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-6EF42-0AJ0, Molded case circuit breaker, 4-pole, 250 A, TM240 overcurrent release, 220 kA at 240 V AC.","salesMarkdown":"This 3VA1 delivers 220 kA at 240 V AC, 154 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. At 415 V, 154 kA covers most industrial main feeders; at 690 V, 17 kA is typical for motor control center incomers. ## Thermal Derating — Continuous Current vs Ambient Temperature Above that, derating applies: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. ## Auxiliary Contacts and Wiring Integration The auxiliary switches follow the main contact position; the trip alarm switch closes only on a fault trip (thermal or magnetic), not on manual open. This gives the PLC or BMS a dedicated fault signal without needing an external relay. No undervoltage release or shunt trip is included — those are separate accessories if required.","metaTitle":"Siemens 3VA1225-6EF42-0AJ0 SENTRON MCCB, 250A, 4-Pole, 220kA","metaDescription":"Siemens SENTRON 3VA1225-6EF42-0AJ0 molded case circuit breaker, 250A rated, 4-pole, TM240 release. Breaking capacity 220kA at 240V. Active production. Available 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 HP","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":"3VA9988-0AB11","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=568837&mlfb=3VA1225-6EF42-0AJ0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-6EF42-0AJ0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1225-6EF42-0AJ0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability — stock and lead time are confirmed at quote time."},{"question":"What is the breaking capacity of this MCCB at 415 V?","answer":"At 415 V AC, the breaking capacity is 154 kA. This covers most industrial main feeder applications at that voltage level."},{"question":"What auxiliary switches come with this breaker?","answer":"It includes 2 auxiliary switches (follow main contacts) plus 1 trip alarm switch (HP type) that signals only on a fault trip."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-6EF42-0AJ0","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/3VA1225-6EF42-0AJ0 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}}