{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM9332-0KK","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM9332-0KK","canonicalUrl":"https://aoctrl.com/siemens/5SM9332-0KK","factsUrl":"https://aoctrl.com/api/mcp/products/5SM9332-0KK","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RC unit electronic, 3-pole, type AC, In: 40 A, 30 mA, Un AC: 400 V, 50 Hz, instantaneous design.","salesMarkdown":"The Siemens SENTRON 5SM9332-0KK is a 3-pole residual current unit (RC unit electronic) rated 40 A with a 30 mA trip threshold, type AC, for 400 V AC / 50 Hz supply. This is the component that sits downstream of the main breaker or upstream of a sub-distribution board where you need earth-fault protection on a three-phase line. The 40 A continuous rating (In) sets the maximum load current the RC unit can carry without overheating — sized for a 40 A feeder, not a 63 A one. The 30 mA residual operating current (IΔn) is the standard sensitivity for personnel protection (30 mA threshold per IEC 60364 against fatal shock). The 400 V AC / 50 Hz supply voltage matches standard European three-phase distribution panels (230/400 V networks). Power dissipation is 0.8 W per pole in hot operating state — negligible for thermal budgeting inside a crowded enclosure, but worth summing across all poles (2.4 W total) if you're calculating cabinet internal temperature rise. ## Panel integration Its 3-pole form factor occupies three modular-width units (each 18 mm, so 54 mm total). The instantaneous design means it coordinates with upstream overcurrent devices on the time-current curve — no intentional delay to stack against a selective main RCD. Wire it as a stand-alone residual current device or combine it with a matching SENTRON MCB (e.g., a 5SL or 5SY series) to form an RCBO assembly.","metaTitle":"Siemens SENTRON 5SM9332-0KK RC Unit, 3-Pole, 40 A, 30 mA, 40","metaDescription":"Siemens SENTRON 5SM9332-0KK 3-pole RC unit, type AC, rated 40 A / 30 mA at 400 V AC, 50 Hz. Current lifecycle stage. Available to order; confirm pricing and availability via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"title":"5SM9332-0KK","description":"RC unit, 3-pole, type AC, In: 40 A, 30 mA, Un AC: 400 V","Number Of Poles":"3","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"RC unit electronic","Design Of The Product":"Instantaneous","value range of the supply voltage at AC":"400 V","Value Range Of The Supply Voltage Frequency":"50 Hz","for rated value of the current at AC in hot operating state per pole":"0.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/997a08d760f6f483e370aafb2102a3c6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629182&mlfb=5SM9332-0KK"},"ai":{"faq":[{"question":"What are the key ratings for 5SM9332-0KK?","answer":"3-pole RC unit, type AC, rated 40 A continuous, 30 mA residual trip threshold, for 400 V AC / 50 Hz supply. Power dissipation is 0.8 W per pole."},{"question":"Where can I buy 5SM9332-0KK?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM9332-0KK","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/5SM9332-0KK when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}