{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5EF42-0AH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5EF42-0AH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5EF42-0AH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF42-0AH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5EF42-0AH0, 4-pole molded case circuit breaker, 250 A rated continuous current, TM240 thermal-magnetic release, line protection version.","salesMarkdown":"This MCCB delivers 187 kA breaking capacity at 240 V, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V. The 4-pole design (three phases plus neutral switched) is standard for TN-S or TT systems where the neutral needs disconnection. At 55 °C it derates to 243.3 A, at 60 °C to 236.5 A, at 65 °C to 229 A, and at 70 °C to 223 A. That means in a warm panel — say 50 °C internal — you still get full 250 A; above that, the thermal element trips earlier to protect the breaker internals. The IP40 front protection is typical for panel-mounted breakers — dust-protected but not sealed against water ingress. ## Auxiliary contacts and signaling The trip alarm signals a fault trip separately from manual on/off status — useful for remote monitoring or PLC input.","metaTitle":"Siemens 3VA1225-5EF42-0AH0 SENTRON MCCB, 250 A, 4-Pole","metaDescription":"Siemens SENTRON 3VA1225-5EF42-0AH0 molded case circuit breaker, 250 A rated, 4-pole, TM240 thermal-magnetic release. Breaking capacity 187 kA at 240 V. Active production. Quoted to","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":"No","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":"without auxiliaryrelease","Ground fault monitoring version":"Without","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=568690&mlfb=3VA1225-5EF42-0AH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF42-0AH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1225-5EF42-0AH0?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for your quantity and timeline."},{"question":"What is the breaking capacity of 3VA1225-5EF42-0AH0?","answer":"187 kA at 240 V, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V — these are Icu ratings for the 250 A frame."},{"question":"Will 3VA1225-5EF42-0AH0 fit a panel designed for a 3VA1010-2ED42-0AE0?","answer":"No — the 3VA1010 is a smaller frame (100 A, 3-pole typically) with different dimensions and mounting footprint. The 3VA1225 is physically larger (70 mm depth, 140 mm width, 158 mm height) and requires panel cutout and busbar spacing sized for a 250 A frame."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5EF42-0AH0","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/3VA1225-5EF42-0AH0 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}}