{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF36-0JC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF36-0JC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF36-0JC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF36-0JC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF36-0JC0, molded case circuit breaker, 3-pole, 25 A rated at 40 °C, 187 kA interrupting capacity at 240 V, line protection, with shunt trip and 2 HQ auxiliary switches.","salesMarkdown":"The Siemens 3VA1125-5EF36-0JC0 is a SENTRON molded case circuit breaker built for line protection — 3-pole, rated 25 A at 40 °C, with an interrupting capacity that hits 187 kA at 240 V and still holds 121 kA at 415 V. That kind of short-circuit rating means it can sit on the main feeder of a panel with high available fault current and still clear a bolted fault without the arc flashing upstream. No undervoltage release, no ground-fault module, no communication stack. If your BOM calls for a plain line-protection MCCB with a shunt trip and aux contacts, this is a clean match. The frame measures 76.2 mm wide, 130 mm tall, 70 mm deep — a 3-pole MCCB that fits a standard distribution panel footprint. Power loss runs 8.5 W at full load, so panel heat rise is manageable even in a tightly packed enclosure. ## Thermal derating and ambient range If your panel sits in a hot machine room or near a furnace line, the 3VA1 holds up better than a lot of thermal-magnetic breakers that start dropping current at 40 °C.","metaTitle":"Siemens 3VA1125-5EF36-0JC0 SENTRON MCCB, 25 A, 3-Pole, 187 k","metaDescription":"Siemens 3VA1125-5EF36-0JC0 SENTRON molded case circuit breaker, 25 A rated at 40°C, 3-pole, 187 kA interrupting at 240 V. Line protection with shunt trip and 2 HQ aux switches. Quo","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":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 500 V":"17 kA","at 690 V":"17 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":"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":"8.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11255EF360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","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":"3VA9688-0BL32","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":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"box terminal on both sides","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=498613&mlfb=3VA1125-5EF36-0JC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF36-0JC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA1125-5EF36-0JC0 and 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 quote."},{"question":"What interrupting capacity does this MCCB have at 240 V and 415 V?","answer":"At 240 V the interrupting capacity is 187 kA; at 415 V it's 121 kA. At 440 V it drops to 75.6 kA, and at 500 V or 690 V it holds at 17 kA."},{"question":"What auxiliaries and releases come on this variant?","answer":"It ships with a shunt trip (STL) release for remote electrical tripping and two HQ auxiliary switches for contact status feedback. No undervoltage release, no ground-fault module, no communication function."},{"question":"What are the physical dimensions of this breaker?","answer":"Width is 76.2 mm, height is 130 mm, depth is 70 mm — standard 3-pole MCCB footprint for distribution panel mounting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF36-0JC0","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/3VA1125-5EF36-0JC0 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}}