{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-4GF42-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-4GF42-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-4GF42-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4GF42-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-4GF42-0BA0, molded case circuit breaker, 250 A, 4-pole, TM240 thermal-magnetic release, line protection, 70 mm depth, 140 mm width, 158 mm height.","salesMarkdown":"The 250 A frame carries the full current at ambient temperatures up to 50 °C without derating; above that, the thermal curve steps down to 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C — so if this breaker lives in a warm enclosure, the actual trip threshold shifts, and you size the load accordingly. Interrupting capacity is given at five voltage levels: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, 17 kA at 500 V, and 11.9 kA at 690 V. The 415 V figure is the one most panel builders will check first for 400 V three-phase distribution — 75.6 kA gives solid headroom for high-fault installations without cascading upstream. That means it drops the breaker on loss of control voltage, which is useful for safety circuits or coordinated shutdown sequences. Dimensions are 70 mm depth, 140 mm width, 158 mm height. Width at 140 mm is the 4-pole footprint; verify the mounting base matches existing busbar or DIN-rail cutouts before ordering.","metaTitle":"Siemens 3VA1225-4GF42-0BA0 SENTRON MCCB, 250 A, 4-Pole","metaDescription":"Siemens SENTRON 3VA1225-4GF42-0BA0 molded case circuit breaker, 250 A, 4-pole, TM240 release, 70 mm depth. Active production. Quoted 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","Maximum":"250 A","Minimum":"250 A","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 500 V":"17 kA","at 690 V":"11.9 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":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"59.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA12254GF420AA0","Design Of The Auxiliary Release":"undervoltage release (UVR)","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":"100%","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB11","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":"S","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=568540&mlfb=3VA1225-4GF42-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4GF42-0BA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1225-4GF42-0BA0 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is the interrupting capacity of 3VA1225-4GF42-0BA0 at 415 V?","answer":"75.6 kA at 415 V, which is the relevant figure for 400 V three-phase distribution panels. At 240 V it is 121 kA, at 440 V it is 52.5 kA, at 500 V it is 17 kA, and at 690 V it is 11.9 kA."},{"question":"What is the depth of 3VA1225-4GF42-0BA0?","answer":"70 mm depth, 140 mm width, 158 mm height. The 70 mm depth is the critical dimension for enclosure clearance."},{"question":"Does 3VA1225-4GF42-0BA0 include an undervoltage release?","answer":"Yes, it includes an undervoltage release (UVR) as standard — the auxiliary release is listed as undervoltage release (UVR). No ground-fault monitoring, no communication function, no voltage trigger."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-4GF42-0BA0","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/3VA1225-4GF42-0BA0 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}}