{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-5JP42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-5JP42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-5JP42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-5JP42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-5JP42-0AA0, molded case circuit breaker, 4-pole, 25 A rated, ETU550 electronic trip unit, 187 kA at 240 V, IP40 front.","salesMarkdown":"## Siemens 3VA2125-5JP42-0AA0 — 25 A SENTRON MCCB with ETU550 Trip The ETU550 trip unit gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves — that's the kind of selectivity coordination a site electrical engineer needs to stage breakers downstream without nuisance trips on a fault. At 240 V it interrupts 187 kA; at 415 V it holds 121 kA; at 690 V the rating drops to 3.7 kA. Panel footprint is 140 mm wide by 181 mm high by 86 mm deep — that's a 5.51 by 7.13 by 3.39 inch envelope. ## Integration — DIN Rail, Communication, and Derating The 140 mm width occupies four 27 mm module spaces — plan your enclosure fill factor accordingly. Side-to-side clearance for heat dissipation follows the standard SENTRON derating rules; at 25 A continuous and 0.6 W max power loss, thermal management is straightforward in a ventilated panel. The communication function means it can integrate with a fieldbus system via the SENTRON communication module — useful for a controls integrator who wants remote trip indication, load monitoring, and energy data without running separate wires back to the PLC. No undervoltage release, no voltage trigger, no ground-fault monitoring version on this variant. If your application requires undervoltage protection or GFCI, you need the accessory modules (5SQ2670-2YA06 for shunt trip, 5SQ2670-2YA63 for UVR).","metaTitle":"Siemens 3VA2125-5JP42-0AA0 SENTRON MCCB, 25 A, 4-Pole, ETU55","metaDescription":"Siemens SENTRON 3VA2125-5JP42-0AA0 molded case circuit breaker, 25 A rated, 4-pole, ETU550 electronic trip. 187 kA at 240 V. Active production, sourced to order. RFQ for firm prici","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","Maximum":"300 A","Minimum":"38 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 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","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":"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":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"25 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU550","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 40% to 160%","Product Function / Grounding Protection":"No","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":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","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,"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=501236&mlfb=3VA2125-5JP42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-5JP42-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-5JP42-0AA0","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/3VA2125-5JP42-0AA0 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}}