{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5EF32-0JH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5EF32-0JH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5EF32-0JH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF32-0JH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5EF32-0JH0, molded case circuit breaker, 3-pole, 250 A at 40 °C, 187 kA breaking capacity at 240 V, line protection design, shunt trip release, 2 auxiliary switches + 1 trip alarm switch.","salesMarkdown":"## Line protection MCCB with a real thermal curve Its breaking capacity hits 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — enough to handle high-fault utility feeds without cascading upstream. The thermal derating is published all the way to 70 °C: 250 A holds steady through 50 °C, then drops to 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. That means you can push the full rating in a ventilated 50 °C enclosure; above that, the curve tells you exactly what you lose per degree. ## Auxiliaries and release built in Dimensions are 105 mm wide, 158 mm high, 70 mm deep.","metaTitle":"Siemens 3VA1225-5EF32-0JH0 SENTRON MCCB, 250A 3-Pole, 187kA@","metaDescription":"Siemens SENTRON 3VA1225-5EF32-0JH0 molded case circuit breaker, 250A rated at 40°C, 3-pole, 187 kA breaking at 240 V. Line protection, shunt trip, auxiliary switches. Current lifec","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","Maximum":"0 A","Minimum":"0 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 500 V":"30 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 A","at 60 °C":"237 A","at 65 °C":"230 A","at 70 °C":"223 A","Depth [In]":"2.76 in","Width [In]":"4.13 in","Height [In]":"6.22 in","Trip Indicator":"Yes","Number Of Poles":"3","Voltage Trigger":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"57 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA12255EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"shunt trip (STL)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","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","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL32","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"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=568680&mlfb=3VA1225-5EF32-0JH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF32-0JH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1225-5EF32-0JH0 and what is the lead time?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for the exact lead time and price."},{"question":"What is the breaking capacity of 3VA1225-5EF32-0JH0 at different voltages?","answer":"187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. These are the maximum interrupting ratings — match them to your available fault current at the point of installation."},{"question":"What is the thermal derating of this MCCB above 40 °C?","answer":"Rated 250 A from 40 °C to 50 °C. At 55 °C it derates to 243 A, at 60 °C to 237 A, at 65 °C to 230 A, and at 70 °C to 223 A. Use this curve to size the breaker for the actual ambient temperature inside the enclosure."},{"question":"What auxiliary switches and releases come on 3VA1225-5EF32-0JH0?","answer":"It includes a shunt trip release (STL) for remote tripping, plus two auxiliary switches and one trip alarm switch. No undervoltage release, no ground-fault monitoring, no communication module."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5EF32-0JH0","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/3VA1225-5EF32-0JH0 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}}