{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF32-0JH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF32-0JH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0JH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0JH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF32-0JH0, molded case circuit breaker, 3-pole, 25 A (40 °C), 187 kA breaking at 240 VAC, line protection, shunt trip + 2 aux + 1 alarm switch.","salesMarkdown":"Three poles, rated 25 A continuous at 40 °C, and it holds that same 25 A rating all the way up to 50 °C before it starts to derate (24 A at 55 °C, 23 A at 70 °C). That thermal stability matters if this breaker lands in a warm panel or near other heat sources. ## Breaking capacity — where this thing earns its keep That's a massive interrupting rating for a 25 A frame — it's designed for high-fault locations like a service entrance or a large transformer secondary where available fault current is brutal. At 415 V it still handles 121 kA, at 440 V it's 75.6 kA, and it stays at 17 kA through 500 V and 690 V. For a 25 A MCCB, that's serious headroom; you're not going to run out of SCCR on a typical industrial panel. ## What's built into this variant That's enough feedback for a PLC to know the breaker position and whether it tripped on fault versus being opened manually. It also has a voltage trip indicator — a mechanical flag that stays latched after a trip so you can walk the panel and see which breaker opened. It's a pure line-protection MCCB with remote trip capability and status contacts. Maximum power loss is 8.5 W — negligible for panel heat calculations, but factor it in if you're stuffing a dozen of these in a sealed enclosure.","metaTitle":"Siemens 3VA1125-5EF32-0JH0 SENTRON MCCB, 25 A, 187 kA at 240","metaDescription":"Siemens 3VA1125-5EF32-0JH0 SENTRON molded case circuit breaker, 25 A rated, 187 kA breaking at 240 VAC. 3-pole, line protection, shunt trip. Active production. Request a 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":"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":"Yes","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":"3VA11255EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch 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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"M","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=18729&mlfb=3VA1125-5EF32-0JH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0JH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-5EF32-0JH0 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 is the breaking capacity of this MCCB at 240 V?","answer":"187 kA at 240 VAC. That's the highest interrupting rating on this frame — it's designed for high-fault locations like service entrances or transformer secondaries."},{"question":"What auxiliary switches come with 3VA1125-5EF32-0JH0?","answer":"It includes two auxiliary switches plus one trip alarm switch (HQ), giving you both position feedback and a separate fault-indication contact."},{"question":"Will 3VA1125-5EF32-0JH0 drop into a panel specified around a 3VA1110-5ED36-0AC0?","answer":"Both are 3-pole SENTRON 3VA MCCBs with the same 130 mm height and 76.2 mm width, so mechanical fit is the same. The 3VA1110-5ED36-0AC0 is a 100 A frame with different trip characteristics and no shunt trip — verify the load current and protection coordination before swapping, but the panel cutout and bus connection are compatible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0JH0","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/3VA1125-5EF32-0JH0 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}}