{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5EF32-0KB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5EF32-0KB0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5EF32-0KB0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF32-0KB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5EF32-0KB0, molded case circuit breaker, 3-pole, 250 A rated current, line protection design, 187 kA breaking capacity at 240 V AC.","salesMarkdown":"## Category strategy — SENTRON 3VA frame at 250 A The 3VA platform is Siemens' current-generation MCCB family, consolidating the legacy 3VL series under a unified accessory and mounting footprint. Breaking capacity is the headline spec for this frame size: 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. The 690 V rating of 17 kA still covers most industrial distribution bus requirements. Thermal derating is published from 40 °C through 70 °C: the breaker holds full 250 A up to 50 °C, then steps down to 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. That curve lets you size the breaker for a panel's actual ambient without oversizing the frame. ## Lifecycle and supply base posture No undervoltage release is fitted; no communication function is integrated. ## Integration — panel fit and mounting Dimensions are 105 mm wide, 158 mm high, 70 mm deep. The 70 mm depth keeps the breaker within typical 200 mm deep enclosure profiles, leaving room for cable bending radii behind the line and load terminals. If your BOM calls for motor protection, the 3VA family includes motor-protective variants with adjustable thermal-magnetic or electronic trip units — this specific order code is the fixed line-protection version. The supplied basic switch order code is 3VA12255EF320AA0, which is the internal switching mechanism; the external order code 3VA1225-5EF32-0KB0 is the complete assembled breaker.","metaTitle":"Siemens 3VA1225-5EF32-0KB0 SENTRON MCCB, 250A, 3-Pole, 187kA","metaDescription":"Siemens 3VA1225-5EF32-0KB0 SENTRON molded case circuit breaker, 250A rated current at 40°C, 3-pole, 187kA breaking capacity 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":"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":"No","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 HP","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":"3VA9688-0BL33","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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA11","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=1391404&mlfb=3VA1225-5EF32-0KB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF32-0KB0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1225-5EF32-0KB0 at different voltages?","answer":"Breaking capacity is 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 AC. The 187 kA at 240 V makes it suitable for high-fault-current switchboards."},{"question":"What compliance documentation does this brand provide for 3VA1225-5EF32-0KB0?","answer":"Siemens SENTRON MCCBs typically carry UL 489, CSA C22.2 No. 5, and IEC 60947-2 certifications. Specific documentation (RoHS, REACH, UL, IEC) is available with the product documentation package upon RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5EF32-0KB0","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/3VA1225-5EF32-0KB0 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}}