{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5GF42-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5GF42-0AE0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5GF42-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5GF42-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5GF42-0AE0, molded case circuit breaker, 4-pole, 250 A, TM240 thermal-magnetic release, line protection design.","salesMarkdown":"## What this 250 A 4-pole MCCB carries The Siemens SENTRON 3VA1225-5GF42-0AE0 is a 4-pole molded case circuit breaker rated 250 A continuous at 40 °C, with a TM240 thermal-magnetic release sized for line-protection duty. It sits in the 3VA1 frame family and is listed as current-production (active lifecycle stage). The interrupting ratings climb with system voltage: 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. That SCCR curve means the breaker handles high fault currents on low-voltage distribution and still clears a solid fault on a 690 V drive bus — useful for mixed-voltage panels where the same frame feeds both 480 V and 600 V sections. At 40 °C the breaker carries a full 250 A. Derating starts at 55 °C (243 A), dropping to 230 A at 65 °C and 223 A at 70 °C. In a sealed enclosure with multiple breakers ganged, that 70 °C figure governs the real-world ampacity — don't load it to 250 A if the ambient inside the panel hits 60 °C. Physical dimensions: 158 mm tall, 140 mm wide, 70 mm deep. Maximum power loss is 57 W at rated load. ## Lifecycle and compliance posture The storage minimum matters for unheated warehouses in cold climates — the breaker can sit at -40 °C without damage, but don't energize it below -25 °C.","metaTitle":"Siemens 3VA1225-5GF42-0AE0 SENTRON MCCB, 250A 4P TM240","metaDescription":"Siemens SENTRON 3VA1225-5GF42-0AE0 molded case circuit breaker, 250 A, 4-pole, TM240 release. SCCR 187 kA at 240 V. Active production. Sourced 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","Maximum":"250 A","Minimum":"250 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":"No","Number Of Poles":"4","Voltage Trigger":"No","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":"3VA12255GF420AA0","Design Of The Auxiliary Switch":"4 auxiliary switches HQ","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":"100%","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":"4","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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=568739&mlfb=3VA1225-5GF42-0AE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5GF42-0AE0/alternatives.json"},"ai":{"faq":[{"question":"What does the TM240 release designation mean?","answer":"TM240 is a thermal-magnetic release rated for 240 A continuous. The breaker frame is 250 A, so the release is set slightly below frame rating — standard practice for selective coordination."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5GF42-0AE0","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/3VA1225-5GF42-0AE0 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}}