{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5EF42-0KH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5EF42-0KH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5EF42-0KH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF42-0KH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5EF42-0KH0, molded case circuit breaker, 4-pole, 250 A rated continuous current, TM240 thermal-magnetic trip, line protection version, breaking capacity 187 kA at 240 V.","salesMarkdown":"It's the line protection variant — meaning it's set up to guard feeders and main branch circuits, not motor loads. The TM240 thermal-magnetic trip unit handles overload and short-circuit response, no electronics to configure. Breaking capacity hits 187 kA at 240 V, dropping to 121 kA at 415 V and 36 kA at 440 V — numbers that matter if you're sizing it for a high-fault panel downstream of a large transformer. Physical footprint: 70 mm deep, 140 mm wide, 158 mm tall. The auxiliary contact block is already fitted: 2 auxiliary switches plus a separate trip alarm switch, all HQ type. That means you get independent status feedback on the breaker position AND a dedicated signal for trip events — useful for a PLC input without extra wiring. Compared to the smaller-frame 3VA1010-2ED32-0JA0, this 3VA1225 is a different animal — the 1010 tops out at 100 A and 3 poles. The 1225 carries 250 A, 4 poles, and a much higher interrupting rating (187 kA vs something under 100 kA at 240 V). No direct drop-in without rewiring; the frame size, bus connections, and lug kits are different. If you're looking for a 250 A 4-pole SENTRON with thermal-magnetic trip, this is the one.","metaTitle":"Siemens 3VA1225-5EF42-0KH0 SENTRON MCCB, 250 A, 4-Pole, 187","metaDescription":"Siemens 3VA1225-5EF42-0KH0 SENTRON molded case circuit breaker, 250 A rated, 4-pole, line protection. Breaking capacity 187 kA at 240 V. Depth 70 mm. Sourced to order; request RFQ","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":"3VA9688-0BL33","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=568709&mlfb=3VA1225-5EF42-0KH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF42-0KH0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1225-5EF42-0KH0 at different voltages?","answer":"At 240 V it interrupts 187 kA; at 415 V it's 121 kA; at 440 V it drops to 36 kA; at 690 V it's 17 kA. The 415 V figure is the one most European industrial panels care about — 121 kA covers high-fault scenarios behind a large transformer."},{"question":"How do I get pricing and availability for 3VA1225-5EF42-0KH0?","answer":"This part is sourced to order through independent distribution. Submit an RFQ — we confirm current pricing and availability at quote time. No stock numbers or lead-time figures on this page."},{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"The SENTRON 3VA series carries IEC 60947-2 certification, plus UL 489 and CSA C22.2 No. 5 for North American installations. RoHS and REACH declarations are available from Siemens' documentation portal. The product designation and brand are SENTRON."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5EF42-0KH0","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/3VA1225-5EF42-0KH0 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}}