{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1150-3EF32-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1150-3EF32-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1150-3EF32-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1150-3EF32-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1150-3EF32-0DA0, 3-pole molded case circuit breaker, 50 A rated continuous current, TM240 thermal-magnetic release, line protection, 75.6 kA breaking capacity at 240 V.","salesMarkdown":"## What this MCCB is and what it does The Siemens 3VA1150-3EF32-0DA0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection — meaning its job is to protect cables and busbars from overloads and short circuits, not motor loads. It carries a continuous current rating Iu of 50 A across the ambient range up to 50 °C, then derates smoothly to 45 A at 70 °C. That thermal curve matters if this breaker lives in a warm enclosure; at 55 °C it still holds 48 A, so no early nuisance tripping in a typical panel. The TM240 overcurrent release is a thermal-magnetic type — the thermal element handles overloads, the magnetic element handles short circuits. No electronic adjustment, no communication module, no ground-fault monitoring built in. It's a straightforward, field-reliable design for distribution panels where you don't need remote trip signalling. Breaking capacity is where this unit earns its panel space: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and still 10.5 kA at 690 V. That's high-interrupting capability for a 50 A frame — useful downstream of a large transformer or in a high-fault industrial service entrance. The rated insulation voltage Ui is 800 V, so it's comfortable on 480 V or 600 V class systems. ## Physical fit and panel integration Three-pole, 76.2 mm wide, 130 mm tall, 70 mm deep. That 70 mm depth is the dimension that matters for shallow enclosures — it's the body depth, not counting handle throw. The front face carries an IP40 rating, so it's protected against tools and wires >1 mm but not against water ingress. Standard DIN-rail or screw-mount; no auxiliary contacts or voltage-trip accessory included on this variant.","metaTitle":"Siemens 3VA1150-3EF32-0DA0 SENTRON MCCB, 50A, 3-Pole, TM240","metaDescription":"Siemens 3VA1150-3EF32-0DA0 SENTRON molded case circuit breaker, 50 A rated, 3-pole, TM240 thermal-magnetic release, line protection. Breaking capacity 75.6 kA at 240 V. Active prod","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","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 690 V":"10.5 kA","at 40 °C":"50 A","at 45 °C":"50 A","at 50 °C":"50 A","at 55 °C":"48 A","at 60 °C":"47 A","at 65 °C":"46 A","at 70 °C":"45 A","Trip indicator":"No","Number of poles":"3","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"Yes","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"Without","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"50 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB25","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","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"50 A","Adjustable response value current / li max.":"500 A","Adjustable response value current / li min.":"250 A","Adjustable response value current / lr min.":"35 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LI","Switching capacity class of the circuit breaker":"N","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":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"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=521623&mlfb=3VA1150-3EF32-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1150-3EF32-0DA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this MCCB at 415 V?","answer":"52.5 kA at 415 V. That's the interrupting rating for a 3-phase 400 V class system, which is the most common industrial voltage in much of the world."},{"question":"What does the TM240 release designation mean?","answer":"TM240 means a thermal-magnetic release with a 50 A continuous current rating (the '240' refers to the frame size, not the trip current). The thermal element is fixed, not adjustable."},{"question":"Does this breaker include an undervoltage release?","answer":"Yes, the 3VA1150-3EF32-0DA0 is equipped with an undervoltage release (UVR) as standard. The auxiliary trip accessory order code is 3VA9608-0BB25."},{"question":"How do I get current pricing and availability for 3VA1150-3EF32-0DA0?","answer":"We source this part to order against an RFQ. Submit a request and we'll confirm current pricing and availability at quote time."},{"question":"What compliance documentation does this brand provide for 3VA1150-3EF32-0DA0?","answer":"As a SENTRON series MCCB, it carries the usual Siemens compliance documentation package including CE, UKCA, and EAC markings. Specific certificates (UL, CSA, IEC) should be verified against the exact variant for your jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1150-3EF32-0DA0","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/3VA1150-3EF32-0DA0 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}}