{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5FF42-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5FF42-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5FF42-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5FF42-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5FF42-0CH0, molded case circuit breaker, 4-pole, 250 A rated continuous current, breaking capacity 187 kA at 240 V, line protection version, with undervoltage release.","salesMarkdown":"The Siemens SENTRON 3VA1225-5FF42-0CH0 is a 4-pole molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C, with a rated insulation voltage of 800 V. The TM240 thermal-magnetic release provides line protection (overload and short-circuit) without an electronic trip unit, making it a straightforward replacement in existing switchboards. Above 55 °C it begins to taper: 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, and 223 A at 70 °C. The IP40 front protection means it is suited for indoor panel mounting where no water jets or dust ingress are expected. Dimensions are 158 mm high, 140 mm wide, 70 mm deep — a standard SENTRON 3VA form factor that fits the same DIN-rail or screw-mount footprint as other 250 A frames in the series. No communication function or ground-fault monitoring is included, so if those are required, a different variant or external add-on is needed. The N-conductor protection is set to 50% of the phase rating, which is typical for 4-pole breakers feeding a mixed single-phase/three-phase load. The latching endurance is rated at 15 000 operations — sufficient for a main breaker or feeder that sees infrequent switching, but not for a motor-starting duty cycle.","metaTitle":"Siemens 3VA1225-5FF42-0CH0 SENTRON MCCB, 250 A, 4-pole, 187","metaDescription":"Siemens SENTRON 3VA1225-5FF42-0CH0 molded case circuit breaker, 250 A rated, 4-pole, breaking capacity 187 kA at 240 V. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"140 mm","Height":"158 mm","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"36 kA","at 690 V":"17 kA","at 40 °C":"250 A","at 45 °C":"250 A","at 50 °C":"250 A","at 55 °C":"243.3 A","at 60 °C":"236.5 A","at 65 °C":"229 A","at 70 °C":"223 A","Trip indicator":"Yes","Number of poles":"4","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 + 1 trip alarm switch HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"250 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":"3VA9608-0BB24","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","Design of the N-conductor protection":"50%","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":"600 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"250 A","Adjustable response value current / li max.":"2 500 A","Adjustable response value current / li min.":"1 250 A","Adjustable response value current / lr min.":"175 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"3","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"M","Max. rated operational current of the frame size":"250 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.":"25 x 8","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"13 x 1"}},"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=568723&mlfb=3VA1225-5FF42-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5FF42-0CH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1225-5FF42-0CH0 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 3VA1225-5FF42-0CH0 at 240 V?","answer":"The breaking capacity is 187 kA at 240 V, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V."},{"question":"Does 3VA1225-5FF42-0CH0 include an undervoltage release?","answer":"Yes, it is equipped with an undervoltage release (UVR) as the auxiliary release."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5FF42-0CH0","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/3VA1225-5FF42-0CH0 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}}