{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM2322-3","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM2322-3","canonicalUrl":"https://aoctrl.com/siemens/5SM2322-3","factsUrl":"https://aoctrl.com/api/mcp/products/5SM2322-3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM2322-3, 2-pole Type F short-time delayed RCD-unit, 40 A rated, 30 mA trip, 230 V AC.","salesMarkdown":"The Siemens 5SM2322-3 is a 2-pole RCD-unit from the SENTRON family, designed as a short-time delayed Type F residual current device. It's rated 40 A with a 30 mA trip threshold, intended for 230 V AC circuits at 50 Hz. Type F means it handles mixed-frequency residual currents — the kind you get from variable-speed drives, washing machines, or other single-phase electronics that inject DC components or higher harmonics onto the line. The short-time delay (selective) characteristic lets it coordinate downstream with instantaneous RCDs, so the closest device trips first on a ground fault, not the main. Rated insulation voltage is 460 V, surge voltage resistance is 4 000 V, and it handles a 3 kA surge current — figures that confirm it's built for overvoltage category III environments, typical of fixed-installation distribution panels. ## Temperature derating and panel placement The 40 A rating holds at 40 °C (37.2 A) and 45 °C (37.2 A), then derates stepwise to 32 A at 70 °C. That means in a warm cabinet or next to high-current breakers, you lose about 20 % of the headline current — plan your load accordingly. Mounting position is any, fastening method is REG (regular DIN rail), and it takes 2 modular width units (about 36 mm) on the rail. ## What it's not — peer contrast The closest peer in the SENTRON family is the 5SU9304-1KK32, an RCBO (RCD + MCB combo) that's instantaneous, Type AC, and rated 32 A. That part is a 1-module unit with an integrated overcurrent trip, while the 5SM2322-3 is a 2-module pure RCD with short-time delay and Type F selectivity. If your panel needs overcurrent protection on the same device, the 5SU9304-1KK32 is the integrated route; if you need Type F discrimination and a separate MCB upstream, stick with the 5SM2322-3.","metaTitle":"Siemens 5SM2322-3 SENTRON RCD, Type F, 40 A, 30 mA, 2-Pole","metaDescription":"Siemens 5SM2322-3 SENTRON RCD-unit, 2-pole, Type F, short-time delayed, 40 A, 30 mA trip, 230 V AC. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"title":"5SM2322-3","Maximum":"45 °C","Minimum":"-25 °C","Sealable":"No","description":"RC unit for 5SY, 2-pole, type F, short-time delayed, In: 40 A, 30 mA, Un AC: 230 V","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"REG","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Maximum Permissible":"75 °C","Minimum Permissible":"-40 °C","Product Designation":"RCD-unit","at AC / rated value":"40 A","Overvoltage Category":"III","Design Of The Product":"short-time delayed","Residual Current Type":"F","at 40 °C / rated value":"37.2 A","at 45 °C / rated value":"37.2 A","at 50 °C / rated value":"36 A","at 55 °C / rated value":"34.8 A","at 60 °C / rated value":"34 A","at 65 °C / rated value":"33.2 A","at 70 °C / rated value":"32 A","OFF-delay time adjustable":"No","Number Of Modular Width Units":"2","Rated Fault Current Adjustable":"No","Protection Function / False Tripping":"Yes","Tripping Fault Current / Rated Value":"30 mA","insulation voltage (Ui) / rated value":"460 V","Surge Current Resistance / Rated Value":"3 kA","Surge Voltage Resistance / Rated Value":"4 000 V","Value Range / Of The Operating Frequency":"50 Hz","Value Range / Of The Supply Voltage Frequency":"50 Hz","Supply Voltage / For Testing Equipment / Minimum":"195 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f157f58cad9efa8e740e0c9e3e5de7b9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=39087&mlfb=5SM2322-3"},"ai":{"faq":[{"question":"What is the maximum operating temperature for 5SM2322-3?","answer":"The maximum operating temperature is 45 °C, with storage up to 75 °C. The 40 A rating derates above 40 °C — at 70 °C it's down to 32 A."},{"question":"What does Type F residual current mean?","answer":"Type F means the RCD detects AC residual currents plus pulsating DC and mixed-frequency currents up to 1 kHz, covering the leakage profiles from variable-speed drives, washing machines, and other electronics that generate higher harmonics."},{"question":"Will 5SM2322-3 drop into a panel designed for 5SU9304-1KK32?","answer":"Not without changes. The 5SM2322-3 is a 2-module unit (36 mm wide) versus the 1-module 5SU9304-1KK32 (18 mm), so it needs an extra slot on the DIN rail. It's also a pure RCD without overcurrent protection, unlike the RCBO 5SU9304-1KK32. Wiring and coordination would need rework."},{"question":"Where can I buy 5SM2322-3 and get a price?","answer":"The 5SM2322-3 is sourced to order against an RFQ through our independent distribution network. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM2322-3","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/5SM2322-3 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}}