{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5EF42-0HH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5EF42-0HH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5EF42-0HH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF42-0HH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5EF42-0HH0, Molded case circuit breaker, Line protection, 4-pole, 250 A rated continuous current Iu, 187 kA at 240 V, TM240 overcurrent release, shunt trip (STL), 2 aux + 1 trip alarm HQ.","salesMarkdown":"Its 4-pole construction covers three-phase plus neutral, with a TM240 thermal-magnetic trip unit that handles overloads and short-circuits up to 187 kA at 240 V, 121 kA at 415 V, and 36 kA at 440 V. Rated continuous current Iu sits at 250 A, and the breaker holds that rating from 40 °C through 50 °C ambient; it starts a gentle thermal derate above that — 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C. That derate curve matters when you're packing this into a warm enclosure or a high-ambient process area. ## Integration into a panel or enclosure A shunt trip release (STL) is integrated — design 3VA9688-0BL30 — for remote emergency-off or undervoltage tripping. For a 250 A feeder on a 240 V system with high available fault current (say, near a large transformer), that rating means you don't need a current-limiting fuse upstream. Mechanical endurance is 15 000 operations — that's a standard figure for a molded-case breaker in line-protection service. It's not a switching device for frequent motor starts; it's the overcurrent protector for a feeder that sees occasional manual switching and fault events.","metaTitle":"Siemens 3VA1225-5EF42-0HH0 SENTRON MCCB, 250 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA1225-5EF42-0HH0 molded case circuit breaker, 250 A rated continuous current Iu, 4-pole, 187 kA interrupting at 240 V. Active production. Available to order again","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":"Yes","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 + 1 trip alarm switch 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":"3VA9688-0BL30","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":"3","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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=568703&mlfb=3VA1225-5EF42-0HH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF42-0HH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1225-5EF42-0HH0 and how do I get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ through this listing."},{"question":"Will 3VA1225-5EF42-0HH0 drop into a panel specified around 3VA1010-2ED32-0JA0 without rewiring?","answer":"No — the 3VA1225-5EF42-0HH0 is a 250 A, 4-pole breaker with a TM240 trip unit and shunt trip, while the 3VA1010-2ED32-0JA0 is a different rating and configuration. Panel fit depends on the mounting rail and busbar arrangement; the 140 mm width and 158 mm height are standard for the SENTRON 3VA family, but the electrical ratings and accessories differ. Verify the existing panel's ampacity and trip coordination before swapping."},{"question":"What compliance documentation does this brand provide for 3VA1225-5EF42-0HH0?","answer":"As a Siemens SENTRON product, this MCCB carries the standard IEC/UL certifications and CE marking for the molded-case breaker class. RoHS and REACH compliance documentation is available through Siemens' standard documentation portal or upon request with an RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5EF42-0HH0","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/3VA1225-5EF42-0HH0 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}}