{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-6KQ42-0DK0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-6KQ42-0DK0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-6KQ42-0DK0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-6KQ42-0DK0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-6KQ42-0DK0, molded case circuit breaker, 4-pole, 25 A, 242 kA at 240 V, line protection, with undervoltage release and auxiliary switches.","salesMarkdown":"That simplifies panel layout in warm enclosures or near heat sources. The 3VA2125-6KQ42-0DK0 measures 86 mm deep by 140 mm wide by 181 mm high — a standard SENTRON 3VA footprint that drops into existing panel cutouts and DIN-rail mounting schemes. The 4-pole body occupies the same width as the 3-pole variant plus one pole space; plan your busbar and gland-plate layout accordingly. With a minimum trip setting of 1.5 A and a maximum of 40 A, this breaker covers a wide branch range. The 242 kA SCCR at 240 V gives headroom for transformer-fed panels where upstream devices are already coordinated. The communication function (listed as present) allows integration into a monitoring system — useful for remote trip indication or load shedding.","metaTitle":"Siemens 3VA2125-6KQ42-0DK0 SENTRON MCCB, 4P, 25 A, 242 kA at","metaDescription":"Siemens SENTRON 3VA2125-6KQ42-0DK0 molded case circuit breaker, 4-pole, 25 A rated, 242 kA interrupting at 240 V. Line protection with UVR and aux switches. Current lifecycle. Quot","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"140 mm","title":"3VA2125-6KQ42-0DK0","Height":"181 mm","Maximum":"40 A","Minimum":"1.5 A","at 240 V":"242 kA","at 415 V":"187 kA","at 440 V":"187 kA","at 500 V":"121 kA","at 690 V":"3.7 kA","at 40 °C":"25 A","at 45 °C":"25 A","at 50 °C":"25 A","at 55 °C":"25 A","at 60 °C":"25 A","at 65 °C":"25 A","at 70 °C":"25 A","Depth [In]":"3.39 in","Width [In]":"5.51 in","Height [In]":"7.13 in","description":"circuit breaker 3VA2 IEC frame 160 breaking capacity class H Icu=85kA @ 415V 4-pole, line protection ETU860, LSIG, In=25A overload protection Ir=10A...25A short-circuit protection Isd=0.6..10x In, Ii=1.5..12x In N conductor protection adjustable (OFF, 100%) gr.-fault prot., can be sw. off Ig=0.2...1 x In= tg=0.05-0.8s nut keeper kit undervoltage release (UVR) 208-230V AC 50/60Hz 1 auxiliary switch HQ 1 trip alarm switch HQ 1 electrical alarm switch","Initial Value":"15 A","Trip Indicator":"Yes","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"25 A","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"3 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","Of The Supplied Basic Switch":"3VA21256KQ420AA0","Design Of The Auxiliary Switch":"1 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","Ground-Fault Monitoring Version":"Summation current formation L + N conductor","Continuous Current / Rated Value":"25 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU860","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 40% to 160%","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB25","Product Function / Grounding Protection":"Yes","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"160 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSIG","number of CO contacts / for auxiliary contacts":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB22","Switching Capacity Class Of The Circuit Breaker":"H","Mechanical Service Life (Operating Cycles) / Typical":"25 000","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/641a6843e8dc2f758bb6426196efa871.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=88374&mlfb=3VA2125-6KQ42-0DK0"},"ai":{"faq":[{"question":"Where can I buy 3VA2125-6KQ42-0DK0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the interrupting capacity of 3VA2125-6KQ42-0DK0 at 240 V?","answer":"242 kA at 240 V, dropping to 187 kA at 415 V and 3.7 kA at 690 V."},{"question":"Does 3VA2125-6KQ42-0DK0 include an undervoltage release?","answer":"Yes, it comes with an undervoltage release (UVR) plus one auxiliary switch, one trip alarm switch, and one electrical alarm switch HQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-6KQ42-0DK0","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/3VA2125-6KQ42-0DK0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}