{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5GF42-0DC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5GF42-0DC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5GF42-0DC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5GF42-0DC0","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 3VA1225-5GF42-0DC0, Molded case circuit breaker, Line protection, 4-pole, 250 A, TM240, 187 kA at 240 V, Undervoltage release, IP40.","salesMarkdown":"That 250 A holds flat from 40 °C to 50 °C, then derates to 223 A at 70 °C — so in a warm enclosure near the top of a packed panel, you still have most of your headroom. The interrupting ratings climb steeply as voltage drops: 187 kA at 240 V, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V. The 4-pole design with 100% N-conductor protection means it opens all phases and the neutral together — no floating neutral after a trip. The TM240 release is thermal-magnetic, so it handles overloads with a time curve and short circuits magnetically. The undervoltage release (UVR) will drop the breaker if supply voltage falls below the dropout threshold, which is useful for preventing a motor from re-accelerating after a sag. The auxiliary contact order code is 3VA9608-0BB25 if you need a spare. Front IP40 keeps out tools and fingers but isn't rated for washdown — keep it inside the enclosure, not on the machine frame. The IP40 front means the handle and trip indicator are accessible through a cutout, but the live terminals stay behind the door or cover.","metaTitle":"SENTRON 3VA1225-5GF42-0DC0 MCCB, 250 A, 4-Pole, 187 kA","metaDescription":"SENTRON 3VA1225-5GF42-0DC0 molded case circuit breaker, 250 A continuous, 4-pole, 187 kA at 240 V. TM240 release, undervoltage trip, IP40 front. 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":"187 kA","at 415 V":"121 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":"2 auxiliary switches HQ","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":"100%","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":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching capacity class of the circuit breaker":"M","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=568793&mlfb=3VA1225-5GF42-0DC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5GF42-0DC0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting rating of 3VA1225-5GF42-0DC0 at 415 V?","answer":"At 415 V the interrupting rating is 121 kA. At 240 V it is 187 kA, at 440 V it is 36 kA, and at 690 V it is 17 kA."},{"question":"Does 3VA1225-5GF42-0DC0 include an undervoltage release?","answer":"Yes, this breaker comes with an undervoltage release (UVR) as standard. The auxiliary release design is an undervoltage release, and the part includes 2 HQ auxiliary switches."},{"question":"Where can I buy 3VA1225-5GF42-0DC0?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the continuous current rating of 3VA1225-5GF42-0DC0 at 50 °C?","answer":"At 50 °C the breaker is rated for 250 A continuous. It holds 250 A from 40 °C to 50 °C, then derates to 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5GF42-0DC0","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/3VA1225-5GF42-0DC0 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}}