{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5EF42-0BH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5EF42-0BH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5EF42-0BH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF42-0BH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5EF42-0BH0, molded case circuit breaker, 4-pole, 250 A rated current at 40 °C, interrupting capacity 187 kA at 240 V AC, with undervoltage release and auxiliary switches.","salesMarkdown":"## What this 250 A MCCB carries — and where the rating matters The interrupting capacity is the headline number here: 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. Above that it derates: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. The UVR means the breaker trips if control voltage drops — standard for safety circuits where loss of pilot power should open the main contacts. The auxiliary switches give remote status indication; the trip alarm switch signals a fault trip separately from a manual open. No communication function onboard — this is a hardwired breaker, not a smart metering unit. If you're swapping from a 3VA1110 frame (100 A class), the 3VA1225 is physically larger; verify the mounting footprint and busbar spacing before committing the panel layout. Maximum power loss is 59.5 W at rated current. That's heat that stays inside the enclosure — factor it into your panel cooling calculation, especially if the breaker is grouped with other high-current devices.","metaTitle":"Siemens 3VA1225-5EF42-0BH0 SENTRON MCCB, 250A, 4P, 187kA@240","metaDescription":"Siemens 3VA1225-5EF42-0BH0 SENTRON molded case circuit breaker, 250A rated at 40°C, 4-pole, 187kA interrupting at 240V. Active production. Sourced 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":"140 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]":"5.51 in","Height [In]":"6.22 in","Trip Indicator":"Yes","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"59.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA12255EF420AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","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","design of the N-conductor protection":"without","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB11","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 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=568694&mlfb=3VA1225-5EF42-0BH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF42-0BH0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VA1225-5EF42-0BH0 at different voltages?","answer":"187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V."},{"question":"Does 3VA1225-5EF42-0BH0 include an undervoltage release?","answer":"Yes, it ships with an undervoltage release (UVR) plus 2 auxiliary switches and 1 trip alarm switch HQ."},{"question":"Where can I buy 3VA1225-5EF42-0BH0 and how is it quoted?","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 a firm quote."},{"question":"Will 3VA1225-5EF42-0BH0 drop into a panel specified for 3VA1110-5EF32-0AM0?","answer":"Not without checking the mounting footprint. The 3VA1225 frame is physically larger than the 3VA1110 (100 A class) — verify busbar spacing and DIN-rail position before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5EF42-0BH0","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/3VA1225-5EF42-0BH0 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}}