{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3348-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3348-0","canonicalUrl":"https://aoctrl.com/siemens/5SM3348-0","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3348-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCCB, 4-pole, type AC, In: 100 A, 30 mA, Un AC: 400 V, 50 Hz, instantaneous design.","salesMarkdown":"The Siemens 5SM3348-0 is a SENTRON residual current circuit breaker (RCCB), 4-pole, type AC, rated 100 A with 30 mA sensitivity at 400 V AC, 50 Hz. The instantaneous design means it trips without intentional delay — no time-grading built in, so it's the last device in the selectivity chain, not a selective S-type. That 30 mA threshold covers personnel protection (hand-to-hand or hand-to-ground fault paths) per IEC 60364. For a line-down spare, the 4-pole frame handles three-phase plus neutral; the neutral is switched and monitored inside the device. The 4-pole width is 4 modules (72 mm). No auxiliary contact slot on this instantaneous type; if you need remote trip indication, look at the SENTRON RCCB with auxiliary switch option (different order code).","metaTitle":"Siemens 5SM3348-0 SENTRON RCCB, 4-Pole, 100 A, 30 mA, 400 V","metaDescription":"Siemens SENTRON 5SM3348-0 RCCB, 4-pole, type AC, 100 A rated current, 30 mA sensitivity, 400 V AC. Current lifecycle. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Number Of Poles":"4","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"RCCB","Design Of The Product":"Instantaneous","value range of the supply voltage at AC":"400 V","Value Range Of The Supply Voltage Frequency":"50 Hz"}},"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=414126&mlfb=5SM3348-0","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3348-0/alternatives.json"},"ai":{"faq":[{"question":"What is 5SM3348-0's listed number of poles?","answer":"4 poles — three phases plus switched neutral, all monitored for residual current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3348-0","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/5SM3348-0 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}}