{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1150-5EF32-0BC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1150-5EF32-0BC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1150-5EF32-0BC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1150-5EF32-0BC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1150-5EF32-0BC0, molded case circuit breaker, 3-pole, 50 A rated continuous current, 187 kA breaking capacity at 240 V, TM240 overcurrent release, undervoltage release, 2 auxiliary switches HQ, IP40 front.","salesMarkdown":"The Siemens 3VA1150-5EF32-0BC0 is a 3-pole SENTRON molded case circuit breaker rated for line protection, carrying a continuous current of 50 A at 40 °C and holding that rating flat through 50 °C before a gentle derating curve begins — 48 A at 55 °C, 47 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. The interrupting ratings are the headline here: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. For a 480 V panel in North America, that 75.6 kA at 440 V is the closest reference — well above typical 65 kA SCCR requirements for distribution. The 690 V figure (17 kA) tells you this breaker handles 600 V class systems but with reduced fault capacity. The TM240 overcurrent release is a thermal-magnetic design — fixed thermal pickup for overloads, magnetic instantaneous for short circuits. No electronic adjustment, no communication module, no phase-failure detection. It is a straight-ahead line protection breaker for fixed-load feeders or distribution subfeeds where you don't need metering or remote trip. The breaker ships with 2 auxiliary switches HQ (high-quantity) as integrated auxiliary contacts. The undervoltage release (UVR) is built in — design of the auxiliary release is UVR. That means the breaker trips on loss of control voltage, which is standard for safety disconnects or emergency-off circuits where you want the breaker to drop if the control supply fails. The integrated auxiliary trip accessory is order code 3VA9608-0BB11 — that is the factory-fitted shunt or UVR module inside this variant. If you are replacing this breaker in a panel that uses the auxiliary trip for remote tripping, verify the wiring matches that accessory's pinout. ## Comparison with the 3VA1112-5EF32-0CA0 sibling The closest functional peer is the 3VA1112-5EF32-0CA0. Both are 3-pole SENTRON MCCBs with the same TM240 release and UVR, same 2 HQ aux switches, same interrupting ratings. The difference is the frame size: the 3VA1112 is a 125 A frame, the 3VA1150 is a 50 A frame. That means the 3VA1112 has a larger physical footprint (wider/taller) and higher continuous current capability. The 3VA1150-5EF32-0BC0 will not drop into a panel cutout designed for the 3VA1112 without enlarging the opening — the mounting centers and overall dimensions differ. If your BOM calls for 50 A protection, the 3VA1150 is the correct frame; the 3VA1112 is oversized and would require a different panel layout.","metaTitle":"Siemens 3VA1150-5EF32-0BC0 MCCB, 50A, 187kA at 240V","metaDescription":"Siemens SENTRON 3VA1150-5EF32-0BC0 molded case circuit breaker, 50 A rated, 187 kA at 240 V, 3-pole, line protection, TM240 release, undervoltage release, 2 HQ aux switches, IP40 f","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":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 690 V":"17 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":"2 auxiliary switches HQ","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":"3VA9608-0BB11","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":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching capacity class of the circuit breaker":"M","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=59237&mlfb=3VA1150-5EF32-0BC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1150-5EF32-0BC0/alternatives.json"},"ai":{"faq":[{"question":"Does the 3VA1150-5EF32-0BC0 include an undervoltage release?","answer":"Yes, it is built in as the design of the auxiliary release — an undervoltage release (UVR) that trips the breaker on loss of control voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1150-5EF32-0BC0","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/3VA1150-5EF32-0BC0 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}}