{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3342-3","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3342-3","canonicalUrl":"https://aoctrl.com/siemens/5SM3342-3","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3342-3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3 series RCCB, Type F, 4-pole, 25 A rated current, 30 mA residual trip, 400 V AC, short-time delayed, DIN rail mount.","salesMarkdown":"The Siemens 5SM3342-3 is a 4-pole SENTRON residual-current circuit breaker (RCCB) rated for 25 A at 400 V AC, 50 Hz, with a 30 mA residual trip threshold and Type F fault-current sensitivity. Type F means it detects AC residual currents plus pulsating DC and high-frequency AC from variable-speed drives, so it is the right choice on circuits feeding single-phase VFDs, washing machines, or heat pumps where a standard Type A would miss the HF component. The short-time delayed design provides selectivity against nuisance tripping from downstream transient leakage — useful on distribution subfeeds feeding multiple loads. Snap-on DIN rail (REG) mounting, 4 width units, 70 mm installation depth. Accepts solid or stranded conductors from 1.5 to 25 mm² at the screw terminals; tighten to 2.5–3 N·m. IP20 with conductors connected — standard for enclosed distribution boards. Finger and back-of-hand safe touch protection. The 25 A rating holds at ambient up to 45 °C. Above that, derate linearly: 23.5 A at 50 °C, 22 A at 55 °C, 20.5 A at 60 °C, 19 A at 65 °C, and 17.5 A at 70 °C (–). ## Fault ratings and coordination Surge-current withstand is 3 kA, and the permissible I²t is 70 000 A²·s. Overvoltage category III suits fixed-installation distribution.","metaTitle":"Siemens 5SM3342-3 SENTRON RCCB, Type F, 25 A, 30 mA, 4P","metaDescription":"Siemens 5SM3342-3 SENTRON RCCB, Type F, 25 A rated, 30 mA trip, 4-pole, short-time delayed, 10 kA SCCR. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Solid":"1.5 ... 25 mm²","Stranded":"1.5 ... 25 mm²","at 40 Cel":"25 A","at 45 Cel":"25 A","at 50 Cel":"23.5 A","at 55 Cel":"22 A","at 60 Cel":"20.5 A","at 65 Cel":"19 A","at 70 Cel":"17.5 A","Rated Value":"50 Hz","Mounting type":"DIN rail (REG)","During Storage":"-40 ... +75 °C","Number of poles":"4","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +45 °C","Operating frequency":"50Hz","Product designation":"RCCB","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage category":"III","Design of the product":"Short-time delayed","Number of width units":"4","Type of fault current":"F","I2t-value / permissible":"70 000 A²·s","circuit-breaker / Design":"5SM3","Short-circuit current rating":"10 kA","Current / at AC / rated value":"25 A","Product feature / silicon-free":"Yes","Position / of power supply cord":"top or bottom","Protection against electrical shock":"Finger and back-of-hand safe","Supply voltage / at AC / rated value":"400 V","Surge current resistance / rated value":"3 kA","Switching function / short-term delayed":"Yes","Tripping residual current / rated value":"30 mA","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Size of installation devices / acc. to DIN 43880":"1","Supply voltage / for testing equipment / minimum":"100 V","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=436578&mlfb=5SM3342-3","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3342-3/alternatives.json"},"ai":{"faq":[{"question":"What conductor sizes does 5SM3342-3 accept?","answer":"Solid and stranded conductors from 1.5 mm² up to 25 mm². Terminal torque is 2.5–3 N·m."},{"question":"What compliance documentation does Siemens provide for 5SM3342-3?","answer":"The product carries a current lifecycle status and is part of the SENTRON series. Standard Siemens compliance documentation (CE, RoHS, REACH) applies; request the specific declaration at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3342-3","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/5SM3342-3 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}}