{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-4GF42-0AD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-4GF42-0AD0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-4GF42-0AD0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4GF42-0AD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-4GF42-0AD0, molded case circuit breaker, 4-pole, 250 A fixed, TM240 thermal-magnetic release, line protection design, interrupting capacity 121 kA at 240 V.","salesMarkdown":"It is a 4-pole, 250 A fixed-rated unit with a TM240 thermal-magnetic release. Interrupting capacity is voltage-dependent: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, 17 kA at 500 V, and 11.9 kA at 690 V. Thermal derating is published from 40 °C up: full 250 A through 50 °C, then 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. ## Panel fit and auxiliary complement Footprint is 140 mm wide, 158 mm high, 70 mm deep. That's a standard SENTRON 3VA form factor — fits the same DIN-rail or screw-mount pattern as other 3VA breakers in this frame. Depth of 70 mm means it clears most shallow enclosures without a gland-plate conflict. Ships with three HQ auxiliary switches built in. The basic switch assembly is order code 3VA12254GF420AA0 — useful if you're ordering a spare mechanism separately.","metaTitle":"Siemens 3VA1225-4GF42-0AD0 SENTRON MCCB, 250 A, 4-Pole, TM24","metaDescription":"Siemens SENTRON 3VA1225-4GF42-0AD0 molded case circuit breaker, 250 A fixed, 4-pole, TM240 release. Line protection. Interrupting capacity 121 kA at 240 V. Current lifecycle. Quote","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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 500 V":"17 kA","at 690 V":"11.9 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":"3VA12254GF420AA0","Design Of The Auxiliary Switch":"3 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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"S","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=568534&mlfb=3VA1225-4GF42-0AD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-4GF42-0AD0/alternatives.json"},"ai":{"faq":[{"question":"What are the physical dimensions of 3VA1225-4GF42-0AD0?","answer":"Width 140 mm, height 158 mm, depth 70 mm. Fits the standard SENTRON 3VA frame mounting pattern."},{"question":"Does this breaker include auxiliary switches or an undervoltage release?","answer":"It includes three HQ auxiliary switches. No undervoltage release, no ground-fault monitoring, and no communication function are fitted."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-4GF42-0AD0","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/3VA1225-4GF42-0AD0 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}}