{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-7KP46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-7KP46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-7KP46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7KP46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-7KP46-0AA0, molded case circuit breaker, 4-pole, 25 A rated continuous current, ETU850 electronic trip unit, 330 kA at 240 V, IP40 front.","salesMarkdown":"The Siemens 3VA2125-7KP46-0AA0 is a SENTRON molded case circuit breaker (MCCB) with 4 poles, rated for a continuous current of 25 A across the full ambient range from 40 °C up to 70 °C — no derating needed in a warm panel. It carries an ETU850 electronic trip unit, which gives you adjustable time-current curves (tr min 0.5 s, tr max 25 s) and configurable N-conductor protection (OFF, 40 % to 160 %). The interrupting ratings are substantial: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.8 kA at 690 V. That kind of SCCR headroom means it can sit upstream of smaller branch breakers without worrying about cascading failure — useful for a main or feeder in a high-fault industrial panel. ## Communication and monitoring The ETU850 release includes a communication function and an other measurement function — meaning it can report trip data and power quality metrics over a bus, though the specific protocol is not listed here. For a controls integrator, that means you can pull event logs and load profiles without climbing to the panel.","metaTitle":"Siemens 3VA2125-7KP46-0AA0 SENTRON MCCB, 25 A, 4-Pole, ETU85","metaDescription":"Siemens SENTRON 3VA2125-7KP46-0AA0 molded case circuit breaker, 25 A rated continuous current, 4-pole, ETU850 release, 330 kA at 240 V. Current lifecycle. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"140 mm","Height":"181 mm","at 240 V":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 kA","at 690 V":"3.8 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]":"3.4 in","Width [in]":"5.5 in","Height [in]":"7.1 in","Number of poles":"4","Product version":"Line protection","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"20 000","Communication Function":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"0.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-40 °C","Other Measurement Function":"Yes","Rated continuous current Iu":"25 A","Rated insulation voltage Ui":"800 V","Ground fault monitoring version":"Without","Design of the overcurrent release":"ETU850","Protection class IP / on the front":"IP40","Design of the N-conductor protection":"adjustable OFF; 40% bis160%","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"25","Adjustable response value time / tr min.":"0.5","Adjustable response value time / tsd max.":"0.5 s","Adjustable response value time / tsd min.":"0.05 s","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"25 A","Adjustable response value current / li max.":"300 A","Adjustable response value current / li min.":"38 A","Adjustable response value current / lr min.":"10 A","Adjustable response value current / Isd max.":"250 A","Adjustable response value current / Isd min.":"15 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LSI","Switching capacity class of the circuit breaker":"C","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"box terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (6-120 mm²)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"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=51757&mlfb=3VA2125-7KP46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7KP46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2125-7KP46-0AA0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What are the key interrupting ratings for 3VA2125-7KP46-0AA0?","answer":"It interrupts 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.8 kA at 690 V. That covers most industrial service entrances and high-fault feeders."},{"question":"What is the depth of 3VA2125-7KP46-0AA0?","answer":"The depth is 86 mm (3.4 in). The width is 140 mm (5.5 in) and height is 181 mm (7.1 in)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-7KP46-0AA0","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/3VA2125-7KP46-0AA0 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}}