{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-4GF42-0AH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-4GF42-0AH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-4GF42-0AH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4GF42-0AH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA series, molded case circuit breaker, 3VA1225-4GF42-0AH0, 250 A frame, 4-pole, TM240 thermal-magnetic release, 121 kA at 240 V.","salesMarkdown":"## What this breaker delivers Interrupting capacity runs 121 kA at 240 V, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V — the 240 V figure covers most North American panelboard fault-current scenarios, while the 415 V rating suits European 400 V distribution. Thermal derating is published per degree from 45 °C (250 A) through 70 °C (223 A); at 55 °C the continuous rating drops to 243.3 A, and at 60 °C to 236.5 A. Plan your load margin against the actual enclosure ambient, not the 40 °C reference. The N-conductor protection is rated at 100 %. Dimensions are 158 mm high × 140 mm wide × 70 mm deep — the 140 mm width is the 4-pole footprint; a panel cut out for a 3-pole 3VA frame leaves roughly 35 mm short per pole. Verify the gland-plate knockout pattern before drilling. The front-face trip indicator is present, so fault isolation doesn't require pulling the cover.","metaTitle":"SENTRON 3VA1225-4GF42-0AH0 MCCB, 250 A, 4-Pole, TM240","metaDescription":"Siemens SENTRON 3VA1225-4GF42-0AH0 molded case circuit breaker, 250 A frame, 4-pole, TM240 thermal-magnetic release. Interrupting capacity 121 kA at 240 V. Active production. Quote","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","title":"3VA1225-4GF42-0AH0","Height":"158 mm","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"25 kA","at 690 V":"11.9 kA","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","description":"circuit breaker 3VA1 IEC frame 250 breaking capacity class S Icu=36kA @ 415V 4-pole, line protection TM240, ATAM, In=250A overload protection Ir=175A...250A short-circuit protection Ii=5...10 x In N conductor protection 100% nut keeper kit 2 auxiliary switches HQ 1 trip alarm switch HQ","Trip Indicator":"Yes","Number Of Poles":"4","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Communication Function":"No","Phase Failure Detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches + 1 trip alarm switch HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"800 V","Of The Supplied Basic Switch":"3VA12254GF420AA0","Courant permanent assigné Iu":"250 A","Design Of The Auxiliary Release":"without auxiliaryrelease","Ground-Fault Monitoring Version":"Without","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%","reference code / acc. to IEC 81346-2":"Q","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 / lg min.":"1","Adjustable response value current / li max.":"2 500 A","Adjustable response value current / li min.":"1 250 A","Neutral conductors / upgradeable/retrofittable":"No","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":"S","Max. rated operational current of the frame size":"250 A","Mechanical Service Life (Switching Cycles) / Typical":"15 000","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 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"13 x 1 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cb84927eafec36694cdcf07f1cf92a14.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=568538&mlfb=3VA1225-4GF42-0AH0"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VA1225-4GF42-0AH0 at 415 V?","answer":"The interrupting capacity is 75.6 kA at 415 V, with higher ratings at lower voltages (121 kA at 240 V) and lower ratings at higher voltages (25 kA at 440 V, 11.9 kA at 690 V)."},{"question":"Where can I buy 3VA1225-4GF42-0AH0 and how is it quoted?","answer":"This part is sourced to order through independent distribution channels; submit an RFQ for current pricing and availability confirmation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-4GF42-0AH0","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/3VA1225-4GF42-0AH0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}