{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5EF42-0JC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5EF42-0JC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5EF42-0JC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF42-0JC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5EF42-0JC0, molded case circuit breaker, line protection, 4-pole, 250 A rated continuous current, TM240 release, 187 kA at 240 V, 121 kA at 415 V.","salesMarkdown":"## What this MCCB is and what it does The Siemens 3VA1225-5EF42-0JC0 is a SENTRON molded case circuit breaker (MCCB) configured for line protection — meaning it sits at the feeder or main distribution point, not downstream on a motor or branch circuit. Four poles, rated continuous current Iu of 250 A, with a TM240 thermal-magnetic release that handles overloads and short-circuits in one package. The interrupting ratings tell you where it can go: 187 kA at 240 V, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V. That 187 kA figure at 240 V is high — this breaker is sized for high-fault locations like transformer secondaries or large panel mains where available fault current is serious. ## Thermal derating and what it means for your panel The 250 A rating holds flat from 40 °C through 50 °C ambient. Above that it starts to step down: 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C. If your enclosure runs hot — say a packed panel with multiple breakers — you need to size the feeder for the derated value, not the nameplate 250 A. The operating range is -25 °C to 70 °C, storage from -40 °C to 80 °C. ## Auxiliaries and releases built in This variant ships with a shunt trip (STL) auxiliary release — order code 3VA9688-0BL32 for the integrated trip unit — and two auxiliary switches (HQ type) for status feedback to a PLC or indication lamp. No undervoltage release, no ground-fault monitoring, no communication module, no phase-failure detection. If you need those, this isn't the variant. The IP40 front protection means it's fine in a clean indoor panel; keep it out of washdown zones. ## Physical fit and panel integration Dimensions: 158 mm height, 140 mm width, 70 mm depth. That 70 mm depth is shallow enough for most standard distribution panels — no deep-can requirement. Four-pole footprint; mounts via the SENTRON base plate or direct panel screws. The 2 auxiliary switches HQ are wired at the factory; verify the shunt trip wiring polarity before energizing.","metaTitle":"Siemens 3VA1225-5EF42-0JC0 SENTRON MCCB, 250 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA1225-5EF42-0JC0 molded case circuit breaker, 250 A rated continuous current, 4-pole, 187 kA interrupting at 240 V. Current production. Quoted 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":"Yes","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","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 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":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL32","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":"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=568705&mlfb=3VA1225-5EF42-0JC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF42-0JC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1225-5EF42-0JC0?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time."},{"question":"What is the interrupting rating of 3VA1225-5EF42-0JC0 at 240 V?","answer":"187 kA at 240 V, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V."},{"question":"Does 3VA1225-5EF42-0JC0 include a shunt trip?","answer":"Yes, it includes a shunt trip (STL) auxiliary release with integrated trip unit order code 3VA9688-0BL32, plus two auxiliary switches HQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5EF42-0JC0","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/3VA1225-5EF42-0JC0 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}}