{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5EF32-0CA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5EF32-0CA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5EF32-0CA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF32-0CA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5EF32-0CA0, molded case circuit breaker, 3-pole, 250 A rated continuous current, 187 kA breaking capacity at 240 V, TM240 thermal-magnetic release, line protection version.","salesMarkdown":"## Siemens SENTRON 3VA1225-5EF32-0CA0 — 250 A MCCB with TM240 release The Siemens SENTRON 3VA1225-5EF32-0CA0 is a 3-pole molded case circuit breaker rated for 250 A continuous current (Iu) at 40 °C ambient, with a TM240 thermal-magnetic overcurrent release. It carries a breaking capacity of 187 kA at 240 V AC and 121 kA at 415 V AC — figures that place it in the high-interrupting category for industrial distribution panels where fault currents exceed typical 50–65 kA ranges. This is the line protection version, meaning it is configured for feeder and main breaker duty rather than motor branch-circuit protection. An undervoltage release (UVR) is integrated; the auxiliary trip accessory is order code 3VA9608-0BB24. The interrupting ratings span four voltage levels: 187 kA at 240 V, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V (–). At 415 V, 121 kA exceeds the typical 50–65 kA SCCR found in most North American panel schedules — this breaker is sized for high-fault installations such as transformer secondaries or large motor control centers where the available fault current is known to be above 100 kA. Thermal derating begins at 55 °C: the breaker carries the full 250 A up to 50 °C (–), then steps down to 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C (–). For a panel that runs at 60 °C internal ambient, the usable current is 236.5 A — a 5.4 % reduction from the nameplate rating. ## Panel integration and mechanical notes","metaTitle":"Siemens 3VA1225-5EF32-0CA0 SENTRON MCCB, 250 A, 187 kA at 24","metaDescription":"Siemens SENTRON 3VA1225-5EF32-0CA0 molded case circuit breaker, 250 A rated current, 187 kA breaking capacity at 240 V. Current lifecycle stage. Available to order against 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":"105 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":"3","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":"Without","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":"3VA9608-0BB24","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","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":"500 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":"0","Protective function of the overcurrent release":"LI","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=568669&mlfb=3VA1225-5EF32-0CA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF32-0CA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3VA1225-5EF32-0CA0?","answer":"This part is sourced to order against an RFQ through independent distribution. Current pricing and availability are confirmed at quote time."},{"question":"What is the breaking capacity of 3VA1225-5EF32-0CA0 at 415 V?","answer":"The breaking capacity is 121 kA at 415 V AC. It also carries 187 kA at 240 V, 36 kA at 440 V, and 17 kA at 690 V."},{"question":"Does 3VA1225-5EF32-0CA0 include an undervoltage release?","answer":"Yes, it is equipped with an undervoltage release (UVR) as standard. The auxiliary trip accessory is order code 3VA9608-0BB24."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5EF32-0CA0","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/3VA1225-5EF32-0CA0 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}}