{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3342-6BA","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3342-6BA","canonicalUrl":"https://aoctrl.com/siemens/5SM3342-6BA","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3342-6BA","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3 series RCCB, 4-pole, Type A, 25 A rated current, 30 mA trip sensitivity, 400 V AC, instantaneous, DIN rail mount.","salesMarkdown":"The Siemens 5SM3342-6BA is a SENTRON residual current circuit breaker (RCCB) — 4-pole, Type A, rated 25 A at 400 V AC, with a 30 mA trip threshold. It's an instantaneous device (no short-time delay), so it clears ground faults the moment leakage exceeds 30 mA. Type A means it catches both sinusoidal AC fault currents and pulsating DC fault currents from rectified loads like switching power supplies or variable-speed drives. Mounts on DIN rail (REG profile), occupies 4 width units, and accepts conductors from 1.5 mm² up to 25 mm². IP20 rating is standard for enclosed distribution boards. Overvoltage category III applies. The 30 mA trip is the critical number for personnel protection. If your circuit has leakage from filters or VFDs that exceeds 30 mA under normal operation, this RCCB will nuisance-trip — you'd need a higher threshold or a Type B device. The 25 A current rating matches a 4-pole circuit feeding a 25 A load; the 400 V AC rating covers 3-phase systems up to that line voltage. Surge current resistance of 1 kA means it withstands lightning-induced or switching surges without welding the contacts. Mechanical life is 10 000 switching cycles typical — that's fine for a protection device that operates rarely; not a switching contactor that cycles every minute. DIN-rail snap-on, any mounting position. Supply from top or bottom. Installation depth is 70 mm. Silicon-free construction.","metaTitle":"Siemens 5SM3342-6BA SENTRON RCCB, 4P, 25A, 30mA, Type A","metaDescription":"Siemens 5SM3342-6BA SENTRON RCCB, 4-pole, Type A, 25A, 30mA, 400V AC. Instantaneous, DIN rail mount, IP20. Current production, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Maximum":"25 mm²","Minimum":"1.5 mm²","Rated Value":"50 Hz","Mounting type":"DIN rail (REG)","Number of poles":"4","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Operating frequency":"50Hz","Product designation":"RCCB","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","at AC / rated value":"400 V","Overvoltage category":"III","Design of the product":"Instantaneous","Number of width units":"4","Type of fault current":"A","circuit-breaker / Design":"5SM3","Current / at AC / rated value":"25 A","Product feature / silicon-free":"Yes","For Testing Equipment / Minimum":"100 V","Position / of power supply cord":"top or bottom","Protection against electrical shock":"Finger and back-of-hand safe","Surge current resistance / rated value":"1 kA","Switching function / short-term delayed":"No","Tripping residual current / rated value":"30 mA","Size of installation devices / acc. to DIN 43880":"1","Mechanical service life (switching cycles) / typical":"10 000"}},"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=615897&mlfb=5SM3342-6BA","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3342-6BA/alternatives.json"},"ai":{"faq":[{"question":"When sourcing 5SM3342-6BA, what's the closest functional second-source — 5SQ2670-2YA16?","answer":"The 5SQ2670-2YA16 is a different device class — it's an MCB (miniature circuit breaker), not an RCCB. It won't drop into the same panel position without rewiring because it lacks the residual-current sensing function. The 5SM3342-6BA is an RCCB; the 5SQ2670-2YA16 is an MCB. They are not functional substitutes."},{"question":"What is 5SM3342-6BA's listed maximum (25 mm²) on this component line?","answer":"The maximum conductor cross-section is 25 mm² for the line and load terminals."},{"question":"What is 5SM3342-6BA's listed minimum (1.5 mm²) on this component line?","answer":"The minimum conductor cross-section is 1.5 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3342-6BA","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/5SM3342-6BA 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}}