{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-6EF42-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-6EF42-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-6EF42-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-6EF42-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-6EF42-0DA0, molded case circuit breaker, 4-pole, 250 A rated continuous current Iu, TM240 thermal-magnetic release, line protection version, 220 kA interrupting at 240 V.","salesMarkdown":"The Siemens SENTRON 3VA1225-6EF42-0DA0 is a 4-pole molded case circuit breaker (MCCB) rated for 250 A continuous current (Iu) at up to 50 °C ambient — meaning it carries a full 250 A load without derating in a typical 40 °C panel environment, and only begins to taper at 55 °C (243.3 A) down to 223 A at 70 °C. That thermal curve gives you headroom for lightly ventilated enclosures or high-ambient furnace rooms. The interrupting ratings are what make this breaker a primary-selectivity candidate: 220 kA at 240 V, 154 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V. For a BOM freeze or critical-spare holding, the key documentation to request at quote time is the device manual (the 3VA molded case circuit breaker manual, referenced in the short-circuit protection design note) and the UL/CSA/IEC compliance certificates. The part carries no integrated communication or auxiliary contact block — if your panel requires those, they must be ordered separately as add-on accessories. The breaker measures 140 mm wide by 158 mm high by 70 mm deep. Front face is IP40 rated — suitable for general indoor panel use, not washdown. No N-conductor protection is included — this is a 3-pole-plus-neutral breaker where the neutral is switched but not protected. If you need a fully protected neutral, this variant is not the one. ## Comparison with a smaller-frame sibling The closest functional peer in the SENTRON family is the 3VA1112-5EF32-0CA0, which is a 3-pole, 125 A frame with a lower interrupting capacity. The 3VA1225-6EF42-0DA0 is the 4-pole, 250 A version with the TM240 release — it is physically wider (140 mm vs 105 mm for the 3-pole 125 A frame) and requires a larger enclosure cutout. If your BOM was specified around the 3VA1112-5EF32-0CA0, you cannot simply swap in this 250 A unit without reworking the bus bars and enclosure depth; the footprint and lug sizes differ. The 3VA1225-6EF42-0DA0 is the correct part when the load exceeds 125 A or when you need the 4-pole switching with the higher SCCR at 415 V.","metaTitle":"Siemens 3VA1225-6EF42-0DA0 SENTRON MCCB, 250 A, 4-Pole, Line","metaDescription":"Siemens SENTRON 3VA1225-6EF42-0DA0 molded case circuit breaker, 250 A rated, 4-pole, TM240 release, 220 kA at 240 V. Current lifecycle. Sourced 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","at 240 V":"220 kA","at 415 V":"154 kA","at 440 V":"36 kA","at 690 V":"17 kA","at 40 °C":"250 A","at 45 °C":"250 A","at 50 °C":"250 A","at 55 °C":"243.3 A","at 60 °C":"236.5 A","at 65 °C":"229 A","at 70 °C":"223 A","Trip indicator":"No","Number of poles":"4","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"Yes","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"Without","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"250 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB25","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","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","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 / Ir max.":"250 A","Adjustable response value current / li max.":"2 500 A","Adjustable response value current / li min.":"1 250 A","Adjustable response value current / lr min.":"175 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LI","Switching capacity class of the circuit breaker":"H","Max. rated operational current of the frame size":"250 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","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","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"13 x 1"}},"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=568844&mlfb=3VA1225-6EF42-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-6EF42-0DA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of the 3VA1225-6EF42-0DA0 at 415 V?","answer":"The interrupting rating at 415 V is 154 kA, which makes it suitable for high-fault-current applications like transformer secondaries or large motor control centers."},{"question":"Will the 3VA1225-6EF42-0DA0 drop into a panel specified for the 3VA1112-5EF32-0CA0?","answer":"No — the 3VA1225-6EF42-0DA0 is a 4-pole, 250 A frame at 140 mm wide, while the 3VA1112-5EF32-0CA0 is a 3-pole, 125 A frame at 105 mm wide. The bus bar spacing, lug sizes, and enclosure cutout differ. You would need to rework the panel."},{"question":"Where can I buy the 3VA1225-6EF42-0DA0 and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"Does the 3VA1225-6EF42-0DA0 include auxiliary contacts or communication?","answer":"No — it ships without auxiliary contacts and without a communication function. Any auxiliary or shunt-trip accessories must be ordered separately (the integrated auxiliary trip order code is 3VA9608-0BB25)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-6EF42-0DA0","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/3VA1225-6EF42-0DA0 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}}