{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5GF42-0HH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5GF42-0HH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5GF42-0HH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5GF42-0HH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1225-5GF42-0HH0, molded case circuit breaker, 250 A, 4-pole, 187 kA at 240 V, line protection with shunt trip and auxiliary switches.","salesMarkdown":"## What this 250 A MCCB does on your line The Siemens SENTRON 3VA1225-5GF42-0HH0 is a 4-pole molded case circuit breaker rated for 250 A continuous — no derating needed up to 50 °C, then it steps down to 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. That thermal curve matters if this breaker lives in a hot panel next to drives or transformers; at 70 °C you lose about 11% of the headroom. Interrupting capacity is 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. That 187 kA at 240 V is the headline number — it tells you this breaker can clear a bolted fault on a high-capacity transformer secondary without welding its contacts shut. Rated insulation voltage is 800 V, so it's comfortable on 480/277 V and 600 V panels. It ships with a shunt trip (STL) for remote opening, plus two auxiliary switches and one trip alarm switch (HQ). The supplied basic switch is order code 3VA12255GF420AA0. No undervoltage release, no ground-fault monitoring, no communication module — this is a straightforward line-protection breaker with remote-trip capability. ## Panel fit and integration Dimensions: 158 mm high, 140 mm wide, 70 mm deep. That 70 mm depth is the body only — account for the shunt trip and auxiliary switch protrusion on the side. Mounts on a DIN rail or direct panel-mount; the 4-pole footprint matches standard Siemens SENTRON 3VA cutouts. Power loss at full load is 57 W — plan ventilation if the panel is sealed.","metaTitle":"Siemens 3VA1225-5GF42-0HH0 SENTRON MCCB, 250 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA1225-5GF42-0HH0 molded case circuit breaker, 250 A, 4-pole, 187 kA at 240 V. Line protection with shunt trip. Current production, quoted to order.","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","Maximum":"250 A","Minimum":"250 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 500 V":"30 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 A","at 60 °C":"237 A","at 65 °C":"230 A","at 70 °C":"223 A","Depth [In]":"2.76 in","Width [In]":"5.51 in","Height [In]":"6.22 in","Trip Indicator":"Yes","Number Of Poles":"4","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":"57 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA12255GF420AA0","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","design of the N-conductor protection":"100%","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL30","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 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=568797&mlfb=3VA1225-5GF42-0HH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5GF42-0HH0/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3VA1225-5GF42-0HH0 and how is it quoted for volume purchases?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is 3VA1225-5GF42-0HH0's interrupting capacity at 240 V?","answer":"187 kA at 240 V, which is the highest interrupting rating on this breaker. It drops to 121 kA at 415 V and 75.6 kA at 440 V."},{"question":"What auxiliary switches come with this breaker?","answer":"Two auxiliary switches plus one trip alarm switch (HQ designation). A shunt trip (STL) is also included for remote opening."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5GF42-0HH0","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/3VA1225-5GF42-0HH0 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}}