{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-3EF32-0BH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-3EF32-0BH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-3EF32-0BH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3EF32-0BH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-3EF32-0BH0, molded case circuit breaker, 3-pole, 25 A, 75.6 kA interrupting at 240 V, line protection, undervoltage release, 70 x 76.2 x 130 mm.","salesMarkdown":"## What this MCCB actually carries Siemens SENTRON 3VA1125-3EF32-0BH0 is a 3-pole molded case circuit breaker rated 25 A continuous at 40 °C — and holds that full 25 A right up to 50 °C before it starts to derate (24 A at 55 °C, 23 A at 70 °C). That thermal curve means you don't lose headroom in a warm panel unless it's pushing 55 °C inside. Interrupting capacity varies by system voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V or 690 V. That's enough for most secondary distribution panels downstream of a transformer — the 415 V figure covers common IEC industrial feeds. Max power loss runs 11 W — manageable for thermal budgeting in a crowded enclosure. ## What's built in — and what's not If your control scheme needs the breaker to drop out on loss of control voltage, you're covered. This is a straight line-protection MCCB with mechanical auxiliaries — for a managed or communicating breaker you'd step to a different suffix. ## Active — no lifecycle concern Trip indicator is present — visual confirmation of trip state without needing to open the cover.","metaTitle":"Siemens 3VA1125-3EF32-0BH0 SENTRON MCCB, 25 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1125-3EF32-0BH0 molded case circuit breaker, 25 A, 3-pole, 75.6 kA interrupting at 240 V. Active production — sourced to order. Request 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":"76.2 mm","Height":"130 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 500 V":"11.9 kA","at 690 V":"11.9 kA","at 40 °C":"25 A","at 45 °C":"25 A","at 50 °C":"25 A","at 55 °C":"24 A","at 60 °C":"24 A","at 65 °C":"23 A","at 70 °C":"23 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","Trip Indicator":"Yes","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"11 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11253EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","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":"3VA9608-0BB11","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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"N","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=426983&mlfb=3VA1125-3EF32-0BH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3EF32-0BH0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-3EF32-0BH0","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/3VA1125-3EF32-0BH0 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}}