{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5GF42-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5GF42-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5GF42-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5GF42-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5GF42-0KC0, molded case circuit breaker, 4-pole, 250 A rated continuous current, 187 kA breaking capacity at 240 V, line protection version with TM240 overcurrent release and shunt trip.","salesMarkdown":"The Siemens SENTRON 3VA1225-5GF42-0KC0 is a 4-pole molded case circuit breaker rated for 250 A continuous current (Iu) at up to 50 °C, with a TM240 thermal-magnetic overcurrent release. If your panel needs a simple, high-interrupt MCCB with a clean auxiliary contact set, this fits. If you need integrated ground-fault or undervoltage protection, you'll add external modules or look at a different variant. ## Thermal derating curve — the real continuous current Above that, the TM240 release begins to thermally derate: 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 panel ambient runs at 60 °C, you're limited to 236.5 A continuous — not 250 A. The 100% N-conductor protection means the neutral pole is fully rated and switched — no derating on the neutral path.","metaTitle":"Siemens 3VA1225-5GF42-0KC0 SENTRON MCCB, 250 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA1225-5GF42-0KC0 molded case circuit breaker, 250 A rated continuous current, 4-pole, 187 kA at 240 V. Active 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":"3VA9688-0BL33","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":"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=568802&mlfb=3VA1225-5GF42-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5GF42-0KC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1225-5GF42-0KC0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is 3VA1225-5GF42-0KC0's depth?","answer":"The depth is 70 mm."},{"question":"What compliance documentation does this brand provide for 3VA1225-5GF42-0KC0?","answer":"As a SENTRON MCCB from Siemens, this part is designed to meet IEC 60947-2 and UL 489 standards. Specific RoHS, REACH, and other compliance declarations are available from the manufacturer's documentation portal."},{"question":"When sourcing 3VA1225-5GF42-0KC0, what's the closest functional second-source?","answer":"The closest functional peer is the 3VA1010-2ED32-0JA0, a smaller-frame 4-pole MCCB in the same SENTRON family. However, the 3VA1225-5GF42-0KC0 carries a 250 A rating and 187 kA breaking capacity — the 3VA1010 frame is rated lower. Panel cutout and busbar spacing may differ; verify dimensions before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5GF42-0KC0","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/3VA1225-5GF42-0KC0 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}}