{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-6GF42-0DH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-6GF42-0DH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-6GF42-0DH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-6GF42-0DH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-6GF42-0DH0, molded case circuit breaker, 4-pole, 250 A rated continuous current, TM240 overcurrent release, 220 kA at 240 V, line protection.","salesMarkdown":"## Siemens 3VA1225-6GF42-0DH0 — 250 A SENTRON MCCB with TM240 Release The Siemens 3VA1225-6GF42-0DH0 is a SENTRON molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C, with a 4-pole configuration and a TM240 thermal-magnetic overcurrent release. Its interrupting capacity reaches 220 kA at 240 V and 154 kA at 415 V, which means it can safely clear high-fault currents in low-voltage distribution without cascading upstream — a key spec for main or tie-breaker positions where available fault current exceeds 100 kA. For line protection duty, this breaker does not include a voltage trigger, communication module, or phase-failure detection — it is a straightforward overcurrent-only device with an undervoltage release (UVR) fitted as standard. The auxiliary contact block is a 2-auxiliary-switch plus 1-trip-alarm-switch HQ variant (order code 3VA9608-0BB25 for the integrated auxiliary trip). The N-conductor protection is rated at 100 %, so the neutral pole is fully rated for the same current as the phase poles — important for 4-wire distribution where the neutral carries load current. Above 50 °C the continuous current must be derated per the datasheet curve: 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C. Dimensions are 158 mm height, 140 mm width, and 70 mm depth. The 70 mm depth means the breaker protrudes less than 3 inches from the mounting surface — relevant when the panel door clearance is tight or when busbar connections are made on the rear. With a rated insulation voltage of 800 V and interrupting capacities of 36 kA at 440 V and 17 kA at 690 V, this breaker can be applied in 400 V and 690 V systems, though the interrupting rating drops significantly at the higher voltage. For DC network applications, Siemens directs users to the 3VA MCCB device manual for switching power values — the standard AC ratings do not apply in DC circuits.","metaTitle":"Siemens 3VA1225-6GF42-0DH0 SENTRON MCCB, 250 A, 4-Pole, 220","metaDescription":"Siemens 3VA1225-6GF42-0DH0 SENTRON molded case circuit breaker, 250 A rated continuous current, 4-pole, 220 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":"220 kA","at 415 V":"154 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":"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 + 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":"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":"3","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"H","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=568872&mlfb=3VA1225-6GF42-0DH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-6GF42-0DH0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VA1225-6GF42-0DH0 at 415 V?","answer":"At 415 V, the interrupting capacity is 154 kA. At 240 V it is 220 kA, at 440 V it is 36 kA, and at 690 V it is 17 kA."},{"question":"What auxiliary contacts come with 3VA1225-6GF42-0DH0?","answer":"The breaker is equipped with 2 auxiliary switches plus 1 trip alarm switch (HQ variant). The integrated auxiliary trip order code is 3VA9608-0BB25."},{"question":"How do I get current pricing and availability for 3VA1225-6GF42-0DH0?","answer":"Current pricing and availability are confirmed at quote time. Submit an RFQ for this order code — the part is sourced to order through independent distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-6GF42-0DH0","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/3VA1225-6GF42-0DH0 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}}